CN110729484A - Low-temperature lithium ion battery and manufacturing method thereof - Google Patents
Low-temperature lithium ion battery and manufacturing method thereof Download PDFInfo
- Publication number
- CN110729484A CN110729484A CN201911071686.2A CN201911071686A CN110729484A CN 110729484 A CN110729484 A CN 110729484A CN 201911071686 A CN201911071686 A CN 201911071686A CN 110729484 A CN110729484 A CN 110729484A
- Authority
- CN
- China
- Prior art keywords
- low
- manufacturing
- temperature
- ion battery
- lithium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 50
- 239000000919 ceramic Substances 0.000 claims abstract description 64
- 239000003792 electrolyte Substances 0.000 claims abstract description 33
- 239000002904 solvent Substances 0.000 claims abstract description 28
- 239000011230 binding agent Substances 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 34
- 239000004014 plasticizer Substances 0.000 claims description 34
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 16
- 239000011267 electrode slurry Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 239000002482 conductive additive Substances 0.000 claims description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical class [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 13
- 229910052744 lithium Inorganic materials 0.000 claims description 13
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 12
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 12
- 229910003002 lithium salt Inorganic materials 0.000 claims description 12
- 159000000002 lithium salts Chemical class 0.000 claims description 12
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 claims description 12
- 238000000638 solvent extraction Methods 0.000 claims description 12
- 239000007773 negative electrode material Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 9
- 239000002041 carbon nanotube Substances 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 9
- 239000011889 copper foil Substances 0.000 claims description 9
- 238000001291 vacuum drying Methods 0.000 claims description 9
- 239000006245 Carbon black Super-P Substances 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 229920005569 poly(vinylidene fluoride-co-hexafluoropropylene) Polymers 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 239000007774 positive electrode material Substances 0.000 claims description 8
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 6
- JGFBQFKZKSSODQ-UHFFFAOYSA-N Isothiocyanatocyclopropane Chemical compound S=C=NC1CC1 JGFBQFKZKSSODQ-UHFFFAOYSA-N 0.000 claims description 6
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 6
- PWLNAUNEAKQYLH-UHFFFAOYSA-N butyric acid octyl ester Natural products CCCCCCCCOC(=O)CCC PWLNAUNEAKQYLH-UHFFFAOYSA-N 0.000 claims description 6
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 6
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 claims description 6
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 claims description 6
- UUIQMZJEGPQKFD-UHFFFAOYSA-N n-butyric acid methyl ester Natural products CCCC(=O)OC UUIQMZJEGPQKFD-UHFFFAOYSA-N 0.000 claims description 6
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 238000010041 electrostatic spinning Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- HNAGHMKIPMKKBB-UHFFFAOYSA-N 1-benzylpyrrolidine-3-carboxamide Chemical compound C1C(C(=O)N)CCN1CC1=CC=CC=C1 HNAGHMKIPMKKBB-UHFFFAOYSA-N 0.000 claims description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001290 LiPF6 Inorganic materials 0.000 claims description 4
- OBNCKNCVKJNDBV-UHFFFAOYSA-N butanoic acid ethyl ester Natural products CCCC(=O)OCC OBNCKNCVKJNDBV-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 229910013188 LiBOB Inorganic materials 0.000 claims description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 2
- BKUSIKGSPSFQAC-RRKCRQDMSA-N 2'-deoxyinosine-5'-diphosphate Chemical compound O1[C@H](CO[P@@](O)(=O)OP(O)(O)=O)[C@@H](O)C[C@@H]1N1C(NC=NC2=O)=C2N=C1 BKUSIKGSPSFQAC-RRKCRQDMSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 2
- 239000002134 carbon nanofiber Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 claims description 2
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 2
- 239000002931 mesocarbon microbead Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 238000000197 pyrolysis Methods 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000006258 conductive agent Substances 0.000 description 13
- 239000006256 anode slurry Substances 0.000 description 8
- 230000005012 migration Effects 0.000 description 7
- 238000013508 migration Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000010405 anode material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/663—Selection of materials containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/665—Composites
- H01M4/667—Composites in the form of layers, e.g. coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a low-temperature lithium ion battery which comprises a positive electrode layer, a negative electrode layer, a diaphragm layer and electrolyte, wherein the positive electrode layer and the negative electrode layer are connected through the diaphragm layer and are sequentially stacked according to the connection rule of the three layers, the positive electrode layer is a porous positive plate, the negative electrode layer is a porous negative plate, and the diaphragm layer is a porous ceramic diaphragm layer. The manufacturing method comprises the following steps: manufacturing a porous positive plate, manufacturing a porous negative plate, manufacturing a porous ceramic diaphragm, manufacturing an electrolyte solvent, manufacturing a lithium ion battery, and finally manufacturing the low-temperature lithium ion battery. The invention comprehensively improves the low-temperature performance of the lithium ion battery, has higher energy density and high rate performance, simultaneously has higher low-temperature performance, and can still keep the capacity of more than 80 percent at minus 40 ℃, thereby meeting the requirement that the battery product can be applied to the technical field of wider environmental temperature.
Description
Technical Field
The invention relates to the technical field of secondary batteries, in particular to a low-temperature lithium ion battery, and particularly relates to a low-temperature lithium ion battery and a manufacturing method thereof.
Background
The lithium ion battery has the advantages of high working voltage, high specific energy, long charging and discharging service life, low self-discharging rate, no memory effect and the like, so that the lithium ion battery has wider and wider application range in civil markets such as portable electronic equipment, electric tools and the like. But the poor low-temperature performance of the alloy material limits the application of the alloy material in special fields of aviation, aerospace, special communication, polar investigation, military and the like. For example, the low-temperature performance of the current lithium ion battery, particularly the poor working performance in a low-temperature environment below-30 ℃, is mainly represented by the rapid attenuation of the discharge capacity and the reduction of the discharge voltage platform.
The main reasons influencing the low-temperature performance reduction of the lithium ion battery are that the transportation speed of lithium ions in the electrode and between the electrode and an electrolyte interface is reduced, and the migration and diffusion speed of electrons in the electrode and between the electrode and the electrolyte interface is reduced; secondly, the viscosity of the electrolyte increases at low temperature, and the ionic conductivity decreases. In addition, the porosity, pore size, specific surface area, electrode density, compaction, wettability of the electrode and the electrolyte at low temperature, and low temperature fluidity of the electrolyte of the lithium ion battery all affect the low temperature performance of the lithium ion battery.
The current methods for improving electron mobility generally adopt the addition of conductive agents (conductive carbon powder, carbon nanotubes, graphene, carbon nanowires, etc.) to the electrode active material. But only to a limited extent in improving the low temperature electrochemical performance in terms of improving electron transfer. The Chinese invention patent 201110055390.9 proposes that the low-temperature-20 ℃ electrochemical discharge capacity of a lithium ion half cell is improved by adding a lithium ion conductor additive, namely perovskite type oxide, into the positive electrode. The invention patent 201210134320.7 of China proposes that the stability of the electrolyte is maintained, the low-temperature conductivity is improved, and the voltage platform and the discharge capacity of the battery are improved at the low temperature of-20 ℃ by adjusting the porosity of the positive and negative pole pieces and the composition of the electrolyte.
Based on the problems, the invention aims to provide a method for manufacturing a lithium ion battery capable of still maintaining high discharge capacity at extremely low temperature, and the method ensures the moistening performance of electrolyte at low temperature, improves the migration and diffusion speed of ions and improves the low-temperature electrochemical performance of the battery by adding a macromolecular plasticizer in the manufacturing process of a positive electrode and a negative electrode and removing the macromolecular plasticizer by a solvent extraction method subsequently to form porous positive and negative electrode plates; the low-temperature ionic conductivity and the electron transmission rate are improved by adopting the low-viscosity low-melting-point lithium salt-solvent combination; the porous ceramic diaphragm with high porosity (more than 45 percent) is adopted to solve the wetting property and the migration and diffusion speed of ions at low temperature, improve the migration and transmission rate of lithium ions and electrons in the electrode and between the electrode and the electrolyte interface and improve the low-temperature ionic conductivity of the electrolyte, and solve the charging and discharging problems of the lithium ion battery under the application of extremely low temperature by combining multiple aspects.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a manufacturing method of a low-temperature lithium ion battery, which is used for manufacturing the low-temperature lithium ion battery through optimization of the following multiple factors, and comprises the following steps: the method comprises the following steps of selecting active substances in positive and negative plates, adding macromolecular plasticizers in the positive and negative plates, controlling the compaction density and the surface density of the positive and negative plates, selecting conductive additives in the positive and negative plates, selecting a ceramic diaphragm with high porosity, selecting a solvent with low melting point and high dielectric constant in the composition of electrolyte, and respectively selecting a carbon-coated aluminum foil and a carbon-coated copper foil as positive and negative current collectors so as to improve the electronic conductivity of the whole battery.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a low-temperature lithium ion battery, which comprises: positive pole layer, negative pole layer, diaphragm layer and electrolyte, connect through the diaphragm layer between positive pole layer and the negative pole layer to it stacks gradually according to the three-layer law of connection, positive pole layer is porous positive plate, the negative pole layer is porous negative pole piece, the diaphragm layer is porous ceramic diaphragm layer.
The invention also provides a manufacturing method of the low-temperature lithium ion battery, which comprises the following steps:
a. manufacturing a porous positive plate: firstly, preparing a binder, then, selecting an active positive electrode material, an electronic conductive additive and a proper amount of macromolecular plasticizer, fully mixing and adding the active positive electrode material, the electronic conductive additive and the proper amount of macromolecular plasticizer into the binder, uniformly stirring the mixture by using a stirrer to obtain positive electrode slurry, coating the positive electrode slurry on the two sides of a carbon-coated aluminum foil, preserving the heat of the positive electrode slurry in a vacuum oven at the temperature of 80 ℃ for 4 hours to remove the binder to obtain a positive electrode plate without the binder, then, using a calender to make the positive electrode plate compact, finally, removing the macromolecular plasticizer in the positive electrode plate by an IPA solvent extraction method, and performing vacuum drying at the temperature of 110 ℃ to;
b. preparing a porous negative plate: firstly, preparing a binder, then, selecting an active negative electrode material, an electronic conductive additive and a proper amount of macromolecular plasticizer, fully mixing and adding the active negative electrode material, the electronic conductive additive and the proper amount of macromolecular plasticizer into the binder, uniformly stirring the mixture by using a stirrer to obtain negative electrode slurry, coating the negative electrode slurry on two sides of a carbon-coated copper foil, preserving the heat of the carbon-coated copper foil in a vacuum oven at the temperature of 80 ℃ for 4 hours to remove the binder to obtain a negative electrode sheet without the binder, then using a calender to make the negative electrode sheet compact, finally removing the macromolecular plasticizer in the negative electrode sheet by an IPA solvent extraction method, and performing vacuum drying at the temperature;
c. manufacturing a porous ceramic diaphragm: the surface of the ceramic diaphragm is coated with a nano alumina coating by adopting an electrostatic spinning method, and the solvent of the coating is removed in an oven, so that the porous ceramic diaphragm with high porosity and high wettability is obtained, and the porosity of the porous ceramic diaphragm is more than 45 percent.
d. Preparing an electrolyte solvent: the lithium salt-solvent combination is obtained by combining a solvent with low viscosity and low melting point and a lithium salt with high low-temperature ionic conductivity at low temperature.
e. Manufacturing a lithium ion battery: placing a ceramic diaphragm between the positive plate and the negative plate, placing the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate in the order of sequentially stacking the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate on the negative plate, applying a certain pressure at a certain temperature to enable the contact of each layer to be more compact, adding electrolyte, and finally manufacturing according to the manufacturing work of a common soft package battery to obtain the low-temperature lithium ion battery.
Preferably, the binder is prepared by adding at least one of polyvinylidene fluoride copolymer PVDF-HFP (a copolymer of vinylidene fluoride and hexafluoropropylene) soluble in the acetone type, Polyacrylonitrile (PAN), polyethylene terephthalate, and polyethylene oxide.
Preferably, the active positive electrode material is at least one of lithium cobaltate, lithium manganate, ternary nickel cobalt manganese, lithium iron phosphate and nickel cobalt aluminum; the active negative electrode material is at least one of lithium titanate, mesocarbon microbeads and artificial graphite.
Preferably, the electron conductive additive is at least one of KS6, carbon nanotube, VGCF, graphene and Super-P.
Preferably, the macromolecular plasticizer is one of PTP, DBP, DOP and DIDP.
Preferably, the positive plate has an areal density of 160-280 g/square meter and a compacted density of 1.0-2.8 g/cm during thin film planting; the negative plate has an area density of 60-120 g/square meter and a compacted density of 0.8-1.6 g/cm for carrying out double-row cultivation.
Preferably, the lithium salt in the electrolyte is at least one of LiPF6, LiBF4, LiBOB and LiBC2O4F2, and the concentration of the lithium salt is 0.7mol/L to 2 mol/L; the solvent in the electrolyte is combined by carbonate and esters, and the carbonate is at least one of Ethylene Carbonate (EC), Propylene Carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC), Ethyl Methyl Carbonate (EMC) and Methyl Propyl Carbonate (MPC); the esters are at least one of gamma-Butyrolactone (BL), Methyl Formate (MF), Ethyl Formate (EF), Methyl Acetate (MA), Ethyl Acetate (EA), Ethyl Propionate (EP), Methyl Butyrate (MB) and Ethyl Butyrate (EB).
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) the lithium ion battery is prepared by selecting an active positive electrode material, an electronic conductive additive and a proper amount of macromolecular plasticizer, fully mixing and adding the active positive electrode material, the electronic conductive additive and the proper amount of macromolecular plasticizer into a binder, uniformly stirring and coating the binder on the front and back surfaces of a carbon-coated aluminum foil, wherein a formed positive electrode sheet has the characteristics of high porosity, compacted density and controllable surface density; the negative plate formed by selecting an active negative electrode material and an electronic conductive additive, adding a proper macromolecular plasticizer and coating the active negative electrode material and the electronic conductive additive on the carbon-coated copper foil through a binder has the characteristics of high porosity, compact density and controllable surface density. Therefore, when lithium ions are transmitted at low temperature, the lithium ions are very smooth, and high energy density is ensured; meanwhile, by selecting a solvent with low viscosity and low melting point, a lithium salt-solvent combination with high low-temperature ionic conductivity at low temperature and a porous ceramic diaphragm with high porosity and high wettability at low temperature, the prepared lithium ion battery still keeps more than 80% of discharge capacity at extremely low temperature (-40 ℃) and has good low-temperature electrochemical performance. Therefore, the low-temperature working temperature range of the lithium ion battery is expanded, and the application of the lithium ion battery in electric vehicles and energy storage at extremely low temperature is solved.
(2) The macromolecular plasticizer is added in the preparation process of the positive and negative pole pieces, so that the energy density of the positive and negative pole pieces is not influenced in the forming process, the positive and negative pole pieces have high porosity, and the macromolecular plasticizer can be removed by a solvent extraction method in the subsequent process, so that the moistening property of the electrolyte at low temperature is ensured, the migration and diffusion speed of ions is improved, and the low-temperature electrochemical performance of the battery is improved.
(3) The low-temperature ionic conductivity and the electron transmission rate are improved by adopting the low-viscosity low-melting-point lithium salt-solvent combination; the porous ceramic diaphragm with high porosity (more than 45 percent) is adopted to solve the wetting property and the migration and diffusion speed of ions at low temperature, improve the migration and transmission rate of lithium ions and electrons in the electrode and between the electrode and the electrolyte interface, improve the low-temperature ionic conductivity of the electrolyte, and solve the charging and discharging problems of the lithium ion battery under the application of extremely low temperature by combining multiple aspects.
Therefore, the invention comprehensively improves the low-temperature performance of the lithium ion battery, not only has higher energy density and high rate performance, but also has higher low-temperature performance, and the capacity can still keep more than 80 percent at minus 40 ℃, thereby meeting the requirement that the battery product can be applied to the technical field of wider environmental temperature.
Drawings
FIG. 1 is an external structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
in the figure: battery 100, positive electrode layer 110, negative electrode layer 120, separator layer 130.
Detailed Description
The invention is further described with reference to the following drawings and detailed description, but is not intended to be limited thereto.
The invention relates to a low-temperature lithium ion battery 100, comprising: the lithium battery comprises a positive electrode layer 110, a negative electrode layer 120, a diaphragm layer 130 and electrolyte, wherein the positive electrode layer 110 and the negative electrode layer 120 are connected through the diaphragm layer 130 and are sequentially stacked according to the three-layer connection rule, the positive electrode layer 110 is a porous positive plate, the negative electrode layer 120 is a porous negative plate, and the diaphragm layer 130 is a porous ceramic diaphragm layer.
The specific embodiment of the low-temperature lithium ion battery of the invention is as follows:
the first embodiment is as follows:
a manufacturing method of a low-temperature lithium ion battery comprises the following steps:
a. manufacturing a porous positive plate: firstly, adding 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) into 180 g of acetone to be fully stirred and dissolved to form a binder, then, fully mixing 60 g of plasticizer DBP, 140 g of ternary active anode material, 2.5% of carbon nano tube conductive agent and 1.5% of Super-P conductive agent, adding the mixture into the binder, uniformly stirring the mixture by using a stirrer to obtain anode slurry, coating the anode slurry on two sides of a carbon-coated aluminum foil, preserving the anode slurry in a vacuum oven at 80 ℃ for 4 hours to remove the binder to obtain an anode sheet without the binder, further using a calender to densify the anode sheet, finally, removing macromolecular plasticizer DBP in the anode sheet by using an IPA solvent extraction method, and performing vacuum drying at 110 ℃ to form a porous anode sheet with high porosity, thus obtaining the anode sheet with the compaction density of 1.0g/cm3；
b. Preparing a porous negative plate: adding 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) into 180 g of acetone to be fully stirred and dissolved to form a binder, fully mixing 60 g of plasticizer DBP, 70 g of composite carbon active negative electrode material, 1.5% of carbon nanotube conductive agent and 1.0% of Super-P conductive agent, adding the mixture into the binder, uniformly stirring the mixture by using a stirrer to obtain negative electrode slurry, coating the negative electrode slurry on two sides of a carbon-coated copper foil, keeping the temperature in a vacuum oven at 80 ℃ for 4 hours to remove the binder to obtain a negative electrode sheet without the binder, compacting the negative electrode sheet by using a calender, removing the macromolecular plasticizer DBP in the negative electrode sheet by using an IPA solvent extraction method, and performing vacuum drying at 110 ℃ to obtain a porous negative electrode sheet with high porosity, wherein the compaction density of the negative electrode sheet is 0.8 g/cm;
c. manufacturing a porous ceramic diaphragm: the surface of the ceramic diaphragm is coated with a nano alumina coating by adopting an electrostatic spinning method, and the solvent of the coating is removed in an oven, so that the porous ceramic diaphragm with high porosity and high wettability is obtained, and the porosity of the porous ceramic diaphragm is more than 45 percent.
d. Preparing an electrolyte solvent: the lithium salt-solvent combination is obtained by combining Ethylene Carbonate (EC) with low viscosity and low melting point, Methyl Formate (MF) solvent and lithium salt LiPF6 with high low-temperature ionic conductivity at low temperature, wherein the concentration of the lithium salt is 0.7 mol/L.
e. Manufacturing a lithium ion battery: placing a ceramic diaphragm between the positive plate and the negative plate, placing the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate in the order of sequentially stacking the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate on the negative plate, applying a certain pressure at a certain temperature to enable the contact of each layer to be more compact, adding electrolyte, and finally manufacturing according to the manufacturing work of a common soft package battery to obtain the low-temperature lithium ion battery.
Example two:
a manufacturing method of a low-temperature lithium ion battery comprises the following steps:
a. manufacturing a porous positive plate: firstly, 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) is added into 180 g of acetone to be fully stirred and dissolved to form a binder, then 60 g of plasticizer DBP, 140 g of ternary active anode material, 2.5 percent of carbon nano tube conductive agent and 1.5 percent of Super-P conductive agent are fully mixed and added into the binder, and stirring is carried outStirring uniformly by a machine to obtain anode slurry, coating the anode slurry on the two sides of a carbon-coated aluminum foil, preserving the heat of the carbon-coated aluminum foil in a vacuum oven at 80 ℃ for 4 hours to remove a binder to obtain an anode plate with the binder removed, compacting the anode plate by using a calender, finally removing a macromolecular plasticizer DBP in the anode plate by an IPA solvent extraction method, and drying the anode plate in vacuum at 110 ℃ to form a porous anode plate with high porosity, so as to obtain the anode plate with the compaction density of 1.9g/cm3；
b. Preparing a porous negative plate: adding 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) into 180 g of acetone to be fully stirred and dissolved to form a binder, fully mixing 60 g of plasticizer DBP, 70 g of composite carbon active negative electrode material, 1.5% of carbon nanotube conductive agent and 1.0% of Super-P conductive agent, adding the mixture into the binder, uniformly stirring the mixture by using a stirrer to obtain negative electrode slurry, coating the negative electrode slurry on two sides of a carbon-coated copper foil, keeping the temperature in a vacuum oven at 80 ℃ for 4 hours to remove the binder to obtain a negative electrode sheet without the binder, compacting the negative electrode sheet by using a calender, removing the macromolecular plasticizer DBP in the negative electrode sheet by using an IPA solvent extraction method, and performing vacuum drying at 110 ℃ to obtain a porous negative electrode sheet with high porosity, wherein the compaction density of the negative electrode sheet is 1.2 g/cm;
c. manufacturing a porous ceramic diaphragm: the surface of the ceramic diaphragm is coated with a nano alumina coating by adopting an electrostatic spinning method, and the solvent of the coating is removed in an oven, so that the porous ceramic diaphragm with high porosity and high wettability is obtained, and the porosity of the porous ceramic diaphragm is more than 45 percent.
d. Preparing an electrolyte solvent: the lithium salt-solvent combination is obtained by combining a low-viscosity and low-melting-point Propylene Carbonate (PC), dimethyl carbonate (DMC), Ethyl Formate (EF), Methyl Acetate (MA) solvent and lithium salt LiPF6 and LiBF4 which still have high low-temperature ionic conductivity at low temperature, wherein the concentration of the lithium salt is 1.3 mol/L.
e. Manufacturing a lithium ion battery: placing a ceramic diaphragm between the positive plate and the negative plate, placing the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate in the order of sequentially stacking the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate on the negative plate, applying a certain pressure at a certain temperature to enable the contact of each layer to be more compact, adding electrolyte, and finally manufacturing according to the manufacturing work of a common soft package battery to obtain the low-temperature lithium ion battery.
Example three:
a manufacturing method of a low-temperature lithium ion battery comprises the following steps:
a. manufacturing a porous positive plate: firstly, adding 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) into 180 g of acetone to be fully stirred and dissolved to form a binder, then, fully mixing 60 g of plasticizer DBP, 140 g of ternary active anode material, 2.5% of carbon nano tube conductive agent and 1.5% of Super-P conductive agent, adding the mixture into the binder, uniformly stirring the mixture by using a stirrer to obtain anode slurry, coating the anode slurry on two sides of a carbon-coated aluminum foil, preserving the anode slurry in a vacuum oven at 80 ℃ for 4 hours to remove the binder to obtain an anode sheet without the binder, then, using a calender to densify the anode sheet, finally, removing macromolecular plasticizer DBP in the anode sheet by using an IPA solvent extraction method, and performing vacuum drying at 110 ℃ to form a porous anode sheet with high porosity, thus obtaining the anode sheet with the compaction density of 2.8g/cm3；
b. Preparing a porous negative plate: adding 7 g of polyvinylidene fluoride copolymer (PVDF-HFP) into 180 g of acetone to be fully stirred and dissolved to form a binder, fully mixing 60 g of plasticizer DBP, 70 g of composite carbon active negative electrode material, 1.5% of carbon nanotube conductive agent and 1.0% of Super-P conductive agent, adding the mixture into the binder, uniformly stirring the mixture by using a stirrer to obtain negative electrode slurry, coating the negative electrode slurry on two sides of a carbon-coated copper foil, keeping the temperature in a vacuum oven at 80 ℃ for 4 hours to remove the binder to obtain a negative electrode sheet without the binder, compacting the negative electrode sheet by using a calender, removing the macromolecular plasticizer DBP in the negative electrode sheet by using an IPA solvent extraction method, and performing vacuum drying at 110 ℃ to obtain a porous negative electrode sheet with high porosity, wherein the compaction density of the negative electrode sheet is 1.6 g/cm;
c. manufacturing a porous ceramic diaphragm: the surface of the ceramic diaphragm is coated with a nano alumina coating by adopting an electrostatic spinning method, and the solvent of the coating is removed in an oven, so that the porous ceramic diaphragm with high porosity and high wettability is obtained, and the porosity of the porous ceramic diaphragm is more than 45 percent.
d. Preparing an electrolyte solvent: the lithium salt-solvent combination is obtained by combining a low-viscosity and low-melting-point Ethyl Methyl Carbonate (EMC), Methyl Propyl Carbonate (MPC), Ethyl Propionate (EP) and Methyl Butyrate (MB) solvent with lithium salt LiBOB and LiBC2O4F2 which still have high low-temperature ionic conductivity at low temperature, wherein the concentration of the lithium salt is 2 mol/L.
e. Manufacturing a lithium ion battery: placing a ceramic diaphragm between the positive plate and the negative plate, placing the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate in the order of sequentially stacking the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate on the negative plate, applying a certain pressure at a certain temperature to enable the contact of each layer to be more compact, adding electrolyte, and finally manufacturing according to the manufacturing work of a common soft package battery to obtain the low-temperature lithium ion battery.
The foregoing is illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, but rather it is to be understood that various changes, modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A low temperature lithium ion battery (100) comprising: positive electrode layer (110), negative electrode layer (120), separator layer (130) and electrolyte, characterized in that: the positive electrode layer (110) and the negative electrode layer (120) are connected through the diaphragm layer (130) and are sequentially stacked according to the three-layer connection rule, the positive electrode layer (110) is a porous positive plate, the negative electrode layer (120) is a porous negative plate, and the diaphragm layer (130) is a porous ceramic diaphragm layer.
2. A manufacturing method of a low-temperature lithium ion battery is characterized by comprising the following steps: the method comprises the following steps:
a. manufacturing a porous positive plate: firstly, preparing a binder, then, selecting an active positive electrode material, an electronic conductive additive and a proper amount of macromolecular plasticizer, fully mixing and adding the active positive electrode material, the electronic conductive additive and the proper amount of macromolecular plasticizer into the binder, uniformly stirring the mixture by using a stirrer to obtain positive electrode slurry, coating the positive electrode slurry on the two sides of a carbon-coated aluminum foil, preserving the heat of the positive electrode slurry in a vacuum oven at the temperature of 80 ℃ for 4 hours to remove the binder to obtain a positive electrode plate without the binder, then, using a calender to make the positive electrode plate compact, finally, removing the macromolecular plasticizer in the positive electrode plate by an IPA solvent extraction method, and performing vacuum drying at the temperature of 110 ℃ to;
b. preparing a porous negative plate: firstly, preparing a binder, then, selecting an active negative electrode material, an electronic conductive additive and a proper amount of macromolecular plasticizer, fully mixing and adding the active negative electrode material, the electronic conductive additive and the proper amount of macromolecular plasticizer into the binder, uniformly stirring the mixture by using a stirrer to obtain negative electrode slurry, coating the negative electrode slurry on two sides of a carbon-coated copper foil, preserving the heat of the carbon-coated copper foil in a vacuum oven at the temperature of 80 ℃ for 4 hours to remove the binder to obtain a negative electrode sheet without the binder, then using a calender to make the negative electrode sheet compact, finally removing the macromolecular plasticizer in the negative electrode sheet by an IPA solvent extraction method, and performing vacuum drying at the temperature;
c. manufacturing a porous ceramic diaphragm: the surface of the ceramic diaphragm is coated with a nano alumina coating by adopting an electrostatic spinning method, and the solvent of the coating is removed in an oven, so that the porous ceramic diaphragm with high porosity and high wettability is obtained, and the porosity of the porous ceramic diaphragm is more than 45 percent.
d. Preparing an electrolyte solvent: the lithium salt-solvent combination is obtained by combining a solvent with low viscosity and low melting point and a lithium salt with high low-temperature ionic conductivity at low temperature.
e. Manufacturing a lithium ion battery: placing a ceramic diaphragm between the positive plate and the negative plate, placing the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate in the order of sequentially stacking the ceramic diaphragm, the positive plate, the ceramic diaphragm, the negative plate, the ceramic diaphragm and the positive plate on the negative plate, applying a certain pressure at a certain temperature to enable the contact of each layer to be more compact, adding electrolyte, and finally manufacturing according to the manufacturing work of a common soft package battery to obtain the low-temperature lithium ion battery.
3. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: the binder is prepared by adding at least one of polyvinylidene fluoride copolymer PVDF-HFP (copolymer of vinylidene fluoride and hexafluoropropylene) soluble in acetone, Polyacrylonitrile (PAN), polyethylene terephthalate and polyethylene oxide.
4. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: the active positive electrode material is at least one of lithium cobaltate, lithium manganate, nickel cobalt manganese, lithium iron phosphate and nickel cobalt aluminum; the active negative electrode material is at least one of lithium titanate, mesocarbon microbeads and artificial graphite.
5. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: the electron conductive additive is at least one of KS6, carbon nano tube, VGCF, graphene and Super-P.
6. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: the macromolecular plasticizer is one of PTP, DBP, DOP and DIDP.
7. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: carrying out double-row high-speed face-to-face dry distillation on the positive plate, wherein the area density of the positive plate is 160-280 g/square meter, and the compaction density is 1.0-2.8 g/cm in double-row high-speed face-to-face dry distillation; the negative plate has an area density of 60-120 g/square meter and a compacted density of 0.8-1.6 g/cm for carrying out double-row cultivation.
8. The method for manufacturing a low-temperature lithium ion battery according to claim 2, wherein the method comprises the following steps: the lithium salt in the electrolyte is at least one of LiPF6, LiBF4, LiBOB and LiBC2O4F2, and the concentration of the lithium salt is 0.7mol/L to 2 mol/L; the solvent in the electrolyte is combined by carbonate and esters, and the carbonate is at least one of Ethylene Carbonate (EC), Propylene Carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC), Ethyl Methyl Carbonate (EMC) and Methyl Propyl Carbonate (MPC); the esters are at least one of gamma-Butyrolactone (BL), Methyl Formate (MF), Ethyl Formate (EF), Methyl Acetate (MA), Ethyl Acetate (EA), Ethyl Propionate (EP), Methyl Butyrate (MB) and Ethyl Butyrate (EB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071686.2A CN110729484A (en) | 2019-11-05 | 2019-11-05 | Low-temperature lithium ion battery and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071686.2A CN110729484A (en) | 2019-11-05 | 2019-11-05 | Low-temperature lithium ion battery and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110729484A true CN110729484A (en) | 2020-01-24 |
Family
ID=69223818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911071686.2A Pending CN110729484A (en) | 2019-11-05 | 2019-11-05 | Low-temperature lithium ion battery and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110729484A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162322A (en) * | 2020-03-26 | 2020-05-15 | 隆能科技(南通)有限公司 | Preparation method of low-temperature lithium ion battery |
| CN111276733A (en) * | 2020-04-21 | 2020-06-12 | 隆能科技(南通)有限公司 | Safe low-temperature lithium ion battery capable of being charged and discharged quickly and preparation method thereof |
| CN111370752A (en) * | 2020-04-08 | 2020-07-03 | 隆能科技(南通)有限公司 | Fast charging and safe low temperature lithium ion battery and method of manufacturing the same |
| CN111600064A (en) * | 2020-05-13 | 2020-08-28 | 隆能科技(南通)有限公司 | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof |
| WO2021189476A1 (en) * | 2020-03-27 | 2021-09-30 | 宁德新能源科技有限公司 | Electrochemical device |
| CN113991062A (en) * | 2021-10-29 | 2022-01-28 | 世一国际新能源有限公司 | High-capacity energy storage lithium ion battery and preparation method thereof |
| CN113991185A (en) * | 2021-10-29 | 2022-01-28 | 世一国际新能源有限公司 | Energy storage lithium ion battery based on nano electrode and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039651A (en) * | 2016-02-04 | 2017-08-11 | 泰州新超锂离子科技有限公司 | Lithium ion battery and preparation method thereof |
-
2019
- 2019-11-05 CN CN201911071686.2A patent/CN110729484A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039651A (en) * | 2016-02-04 | 2017-08-11 | 泰州新超锂离子科技有限公司 | Lithium ion battery and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162322A (en) * | 2020-03-26 | 2020-05-15 | 隆能科技(南通)有限公司 | Preparation method of low-temperature lithium ion battery |
| WO2021189476A1 (en) * | 2020-03-27 | 2021-09-30 | 宁德新能源科技有限公司 | Electrochemical device |
| CN111370752A (en) * | 2020-04-08 | 2020-07-03 | 隆能科技(南通)有限公司 | Fast charging and safe low temperature lithium ion battery and method of manufacturing the same |
| CN111276733A (en) * | 2020-04-21 | 2020-06-12 | 隆能科技(南通)有限公司 | Safe low-temperature lithium ion battery capable of being charged and discharged quickly and preparation method thereof |
| CN111600064A (en) * | 2020-05-13 | 2020-08-28 | 隆能科技(南通)有限公司 | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof |
| WO2021228193A1 (en) * | 2020-05-13 | 2021-11-18 | 隆能科技(南通)有限公司 | High-energy-density long-life fast charging lithium ion battery and preparation method therefor |
| CN113991062A (en) * | 2021-10-29 | 2022-01-28 | 世一国际新能源有限公司 | High-capacity energy storage lithium ion battery and preparation method thereof |
| CN113991185A (en) * | 2021-10-29 | 2022-01-28 | 世一国际新能源有限公司 | Energy storage lithium ion battery based on nano electrode and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110729484A (en) | Low-temperature lithium ion battery and manufacturing method thereof | |
| US10637097B2 (en) | Organic/inorganic composite electrolyte, electrode-electrolyte assembly and lithium secondary battery including the same, and manufacturing method of the electrode-electrolyte assembly | |
| CN103515607B (en) | A kind of lithium ion battery cathode slurry, negative pole and battery | |
| CN111557056B (en) | Three-dimensional structure electrode, method of manufacturing the same, and electrochemical device including the same | |
| CN106711430A (en) | Production method of lithium/carbon fiber or porous carbon paper/copper foil composite negative electrode used for lithium-sulfur battery | |
| KR102824105B1 (en) | Secondary battery | |
| KR102516284B1 (en) | Anode for Lithium Electrochemical Cells | |
| CN111600064A (en) | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof | |
| CN110581253A (en) | Electrode pole piece, preparation method thereof and solid-state battery | |
| KR101775544B1 (en) | Positive electrode for rechargable lithium battery and rechargable lithium battery including the same | |
| CN110098379B (en) | Lithium metal negative electrode, preparation method thereof and lithium battery using negative electrode | |
| US20130252091A1 (en) | Lithium Ion Battery Electrode and Its Fabrication Method | |
| US20180261881A1 (en) | High capacity anode electrodes with mixed binders for energy storage devices | |
| CN110707287A (en) | Metallic lithium cathode, preparation method thereof and lithium battery | |
| CN111370752A (en) | Fast charging and safe low temperature lithium ion battery and method of manufacturing the same | |
| CN111162322A (en) | Preparation method of low-temperature lithium ion battery | |
| CN111276733A (en) | Safe low-temperature lithium ion battery capable of being charged and discharged quickly and preparation method thereof | |
| CN112467308A (en) | Diaphragm, preparation method thereof and lithium ion battery | |
| CN111213260A (en) | Anode, anode preparation method and lithium ion battery | |
| CN111969183A (en) | Positive pole piece, preparation method thereof, and lithium ion secondary battery, electric vehicle and electronic product related to positive pole piece | |
| KR20200089239A (en) | Lithium secondary battery and method for manufacturing the same | |
| CN110459723A (en) | Battery diaphragm, preparation method thereof and battery with battery diaphragm | |
| KR20210120686A (en) | Method for manufacturing negative electrode | |
| KR102227802B1 (en) | Electrode active material slurry composition and secondary battery comprising electrode using the same | |
| CN108258299A (en) | A kind of lithium-ion-power cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200124 |