CN109148893A - One kind being based on lithium ion battery negative material SiOx/C combination electrode and preparation method - Google Patents
One kind being based on lithium ion battery negative material SiOx/C combination electrode and preparation method Download PDFInfo
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- CN109148893A CN109148893A CN201810978372.XA CN201810978372A CN109148893A CN 109148893 A CN109148893 A CN 109148893A CN 201810978372 A CN201810978372 A CN 201810978372A CN 109148893 A CN109148893 A CN 109148893A
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- siox
- lithium ion
- basement membrane
- ion battery
- combination electrode
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- 239000000463 material Substances 0.000 abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 26
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 21
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052799 carbon Inorganic materials 0.000 abstract description 18
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 18
- 210000002469 basement membrane Anatomy 0.000 abstract description 17
- 238000002360 preparation method Methods 0.000 abstract description 12
- 239000002002 slurry Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000006258 conductive agent Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002134 carbon nanofiber Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- -1 graphite Alkene Chemical class 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000007581 slurry coating method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- 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
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of lithium ion battery technology of preparing, specifically a kind of preparation method based on lithium ion battery negative material SiOx/C combination electrode.It includes collector and the upper basement membrane formed by SiOx slurry and lower basement membrane coated in collector upper and lower surface, and the lower surface of the upper surface of the upper basement membrane and lower basement membrane is coated with carbon negative pole material layer.The present invention has the advantages that the design of its layer of structure is reasonable, dexterously by SiOx(x=0 or 1), carbon negative pole material, which is applied on collector, forms combination electrode, technique very simple, manufacturing cost is greatly reduced, security reliability is improved, more more importantly substantially increases the specific capacity of cathode, the energy density for increasing battery extends the cycle life of battery.
Description
Technical field
The present invention relates to a kind of lithium ion battery technologies of preparing, specifically a kind of to be based on lithium ion battery negative material
The preparation method of SiOx/C combination electrode.
Background technique
Lithium ion battery is a kind of secondary cell, it relies primarily on lithium ion, and movement carrys out work between a positive electrode and a negative electrode,
Compared with lead-acid battery, nickel-cadmium cell, nickel-metal hydride battery, has energy density height, specific capacity is big, and service life cycle length etc. is excellent
Point, with the development of lithium ion battery technology, application is also more and more extensive, and the electrode in lithium ion battery has its performance
It has a major impact, in the prior art, the electrode design of lithium ion battery is unreasonable, and structure design is single, and it is multiple that there are preparation processes
Miscellaneous, manufacturing cost is high, and security reliability difference and battery quality energy density are low, reduces that battery cycle life etc. is various to ask
Therefore topic develops a kind of new electrode technology, most important to the development and application of various lithium ion batteries.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind, not only energy density is high but also preparation method is simple, at low cost
Based on lithium ion battery negative material SiOx/C combination electrode and preparation method.
In order to solve the above-mentioned technical problem, of the invention based on lithium ion battery negative material SiOx/C combination electrode, packet
Collector and the upper basement membrane formed by SiOx slurry and lower basement membrane coated in collector upper and lower surface are included, the upper basement membrane
Upper surface and the lower surface of lower basement membrane are coated with carbon negative pole material layer.
The SiOx slurry, is made of SiOx, conductive agent and binder.
The carbon negative pole material slurry, is made of carbon negative pole material, conductive agent and binder.
The carbon negative pole material is natural graphite, artificial graphite, carbonaceous mesophase spherules or hard carbon.
A kind of such as above-mentioned preparation method based on lithium ion battery negative material SiOx/C combination electrode, specific preparation step
Suddenly are as follows: slurry is first prepared coated on forming basement membrane on collector using SiOx, dual coating with a thickness of 2-20 μm, then to painting
Basement membrane after covering carries out the coating of carbon negative pole material layer, prepares SiOx/C combination electrode.
The present invention has the advantages that the combination electrode is by collector, SiOx(x=0 or 1), carbon negative pole material, binder,
Using SiOx(x=0 or 1) as long as the composition such as conductive agent and preparing slurry coated on collector, then to the basement membrane after coating
Graphite slurry coating is carried out, SiOx(x=0 or 1)/C combination electrode can be prepared, layer of structure design rationally, dexterously will
SiOx(x=0 or 1), carbon negative pole material, which is applied on collector, forms combination electrode, and technique very simple greatly reduces manufacture
Cost, improves security reliability, more more importantly substantially increases the specific capacity of cathode, and the energy for increasing battery is close
Degree, extends the cycle life of battery.
Specific embodiment
With reference to embodiment, to of the invention based on lithium ion battery negative material SiOx/C combination electrode
Preparation method is described in further detail.
Preparation method based on lithium ion battery negative material SiOx/C combination electrode of the invention, including collector and
The upper basement membrane formed by SiOx(x=0 or 1) slurry and lower basement membrane coated in collector upper and lower surface, the upper surface of upper basement membrane and
The lower surface of lower basement membrane is coated with carbon negative pole material layer, wherein and SiOx(x=0 or 1) material are as x=0, are silicon, when x=1,
To aoxidize sub- silicon；Used binder is PAA glue, PI glue, silicon ether；Described carbon negative pole material layer is carbon negative pole material slurry
Material, it is made of carbon negative pole material, conductive agent and binder；Its carbon negative pole material is natural graphite, artificial graphite, interphase
Carbosphere or hard carbon, used binder are CMC+SBR, PVDF；In addition used conductive agent be acetylene black, Super P,
Super S, 350G, carbon fiber (VGCF), carbon nanotube (CNTs), Ketjen black (KetjenblackEC300J,
KetjenblackEC600JD, Carbon ECP, Carbon ECP600JD), KS-6, KS-15, SFG-6, SFG-15, graphite
Alkene, in specific operation process, to SiOx(x=0 or 1), slurry uses thin film coated first, then using having SiOx collector
Carbon negative pole material slurry is coated.
A kind of such as above-mentioned preparation method based on lithium ion battery negative material SiOx/C combination electrode, specific preparation step
Suddenly are as follows: first prepare using SiOx(x=0 or 1) slurry coated on forming basement membrane on collector, dual coating with a thickness of 2-20 μm,
Then the coating of carbon negative pole material layer is carried out to the basement membrane after coating, prepares SiOx(x=0 or 1)/C combination electrode, by practice
It proves, which can be improved the specific capacity of cathode, increase the energy density of battery.The method for preparing composite electrode is simple,
Suitable for negative electrode for lithium ion battery.
Claims (5)
1. one kind is based on lithium ion battery negative material SiOx/C combination electrode, it is characterised in that: including collector and coating
The upper basement membrane formed by SiOx slurry and lower basement membrane of lower surface on a current collector, the upper surface of the upper basement membrane and lower basement membrane
Lower surface is coated with carbon negative pole material layer.
2. according to lithium ion battery negative material SiOx/C combination electrode is based on described in claim 1, it is characterised in that: described
SiOx slurry is made of SiOx, conductive agent and binder.
3. being based on lithium ion battery negative material SiOx/C combination electrode according to as claimed in claim 1 or 2, it is characterised in that: institute
The carbon negative pole material slurry stated, is made of carbon negative pole material, conductive agent and binder.
4. according to lithium ion battery negative material SiOx/C combination electrode is based on described in claim 3, it is characterised in that: described
Carbon negative pole material is natural graphite, artificial graphite, carbonaceous mesophase spherules or hard carbon.
5. a kind of preparation method based on lithium ion battery negative material SiOx/C combination electrode as described in claim 1 or 4,
Specific preparation step are as follows: slurry is first prepared coated on forming basement membrane on collector using SiOx, dual coating with a thickness of 2-20 μ
Then m carries out the coating of carbon negative pole material layer to the basement membrane after coating, prepares SiOx/C combination electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978372.XA CN109148893A (en) | 2018-08-27 | 2018-08-27 | One kind being based on lithium ion battery negative material SiOx/C combination electrode and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810978372.XA CN109148893A (en) | 2018-08-27 | 2018-08-27 | One kind being based on lithium ion battery negative material SiOx/C combination electrode and preparation method |
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| Publication Number | Publication Date |
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| CN109148893A true CN109148893A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810978372.XA Pending CN109148893A (en) | 2018-08-27 | 2018-08-27 | One kind being based on lithium ion battery negative material SiOx/C combination electrode and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110098389A (en) * | 2019-04-17 | 2019-08-06 | 浙江衡远新能源科技有限公司 | A kind of lithium ion battery SiOxThe preparation method of/C composite negative pole material electrode |
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Application publication date: 20190104 |