CN106058168A - Prelithiated positive electrode material for lithium ion secondary battery - Google Patents
Prelithiated positive electrode material for lithium ion secondary battery Download PDFInfo
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- CN106058168A CN106058168A CN201610077768.8A CN201610077768A CN106058168A CN 106058168 A CN106058168 A CN 106058168A CN 201610077768 A CN201610077768 A CN 201610077768A CN 106058168 A CN106058168 A CN 106058168A
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- lithium
- lithium ion
- ion secondary
- secondary battery
- prelithiation
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 38
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000007774 positive electrode material Substances 0.000 title claims abstract description 12
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims abstract description 31
- 239000007767 bonding agent Substances 0.000 claims abstract description 5
- 239000006258 conductive agent Substances 0.000 claims abstract description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 239000010405 anode material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002033 PVDF binder Substances 0.000 claims description 5
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 5
- 239000006104 solid solution Substances 0.000 claims description 5
- 239000006230 acetylene black Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910004786 P-Li Inorganic materials 0.000 claims description 3
- 229910004796 P—Li Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000003273 ketjen black Substances 0.000 claims description 3
- 229910000473 manganese(VI) oxide Inorganic materials 0.000 claims description 3
- 229910013481 LiNixM(1-x)O2 Inorganic materials 0.000 claims description 2
- 229910013058 LiYO2 Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 238000000498 ball milling Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000013543 active substance Substances 0.000 abstract 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 12
- 230000008569 process Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005518 electrochemistry Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910006561 Li—F Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000006138 lithiation reaction Methods 0.000 description 1
- 229910000103 lithium hydride Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- -1 wherein M=Co Inorganic materials 0.000 description 1
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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
-
- 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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
-
- 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
- H01M4/582—Halogenides
-
- 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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- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a prelithiated positive electrode material for a lithium ion secondary battery. The prelithiated positive electrode material for the lithium ion secondary battery is prepared from, by weight, 88 to 95 parts of a positive electrode active substance, 0.5 to 3 parts of a conductive agent, 0.7 to 4 parts of a bonding agent and 2 to 10 parts of nanometer lithium fluoride. According to the invention, a formula for the positive electrode material is optimized, and in particular, nanometer lithium fluoride is added; so the whole positive electrode material is prelithiated, has good stability, and can improve the initial delithiation capacity, initial charge and discharge efficiency and energy density of the battery.
Description
Technical field
The present invention relates to a kind of anode material for lithium-ion batteries, especially relate to a kind of prelithiation lithium ion secondary electricity
Pond positive electrode.
Background technology
In recent years, the fast development in the fields such as portable type electronic product/electric automobile/energy-accumulating power station, energy is store
The technology of depositing is had higher requirement.Lithium ion battery becomes these fields due to its high energy density at present
Primary selection, but still its requirement to energy density can not be met.
Lithium ion battery generally includes following ingredient: can embed/deintercalation or alloying/remove alloy
Changing the both positive and negative polarity of lithium ion, both positive and negative polarity directly fills the electrolyte with lithium ion conduction effect, between both positive and negative polarity
There is the barrier film cutting off electronics conduction, and the adnexa such as collector/lug/outer package.Positive electrode carries
Medium-lithium ion for lithium ion battery energy storage；Electrolyte provides the conduction pathway of lithium ion；Negative pole is made
For the received vector of lithium ion, typically do not contain lithium ion.Lithium ion battery passes through lithium ion between both positive and negative polarity
Conduction and lithiumation/go physical and chemical reaction to realize storage and the release of energy, therefore lithium ion in lithium ion battery
Amount determines the energy density of battery.Owing to electrolyte occurs redox reaction on both positive and negative polarity surface, formed steady
Fixed solid electrolyte film (SEI), the composition of this film is alkylcarbonic acid esters organic lithium salt and other inorganic lithiums
Salt, consumes lithium ion, just reduces the utilization rate of lithium ion in positive electrode, reduces the capacity of lithium ion battery
And energy density.
For this present situation, every industry or trade and scientific research institution equal active development prelithiation technology, its principle is:
Lithium metal or other lithium-containing compounds is additionally added, for the lithium that the formation offer of SEI is enough when negative pole makes
Source, thus reduce the loss of the lithium ion in positive pole, improve capacity and the energy density of battery.Prelithiation at present
Technology mainly includes following two: one is the addition lithium powder when negative pole makes；Two is that negative plate is carried out electrochemistry
Lithiumation or chemistry lithiumation process, and form SEI in the outer system of battery.Both approaches all can effectively reduce
The loss of lithium ion in positive pole, improves capacity and the energy density of battery.Relevant main patent has: Zhejiang
University's patent 104993104A by metal-oxide/silica-base material/lithium hydride/CO2 gas is carried out spheroidal graphite,
Form prelithiation material；Chinese Academy of Sciences chemistry institute patent 104630575 A utilizes Al to become electricity with assembled metal
Chi Hou, forms the Al electrode of prelithiation；House journal of LG Corporation 104584278A utilizes by pole piece extremely
In reactive tank, the method for the charging of lithium metallic plate is utilized to carry out prelithiation；The Tianjin bar not science and technology limited public affairs of share
Department patent 104538591 A uses lithium metal anticathode to carry out prelithiation；The patent of Li Zhenqi/Liu Lijun
104538630 A then use lithium metal to react with chelating agent, and anticathode material carries out chemistry lithiumation, and needs
High temperature strengthens prelithiation reaction；Patent 102642024A of Ningde new forms of energy scientific & technical corporation then uses polymer bag
The lithium metal anticathode covered realizes prelithiation process.
But, all there is the problems such as complex process/preparation condition harshness in above two prelithiation method.Wherein lithium
Powder activity is relatively strong, needs to carry out polymer overmold or strictly controlled environment temperature and temperature and atmosphere, improves
Cost；Anticathode sheet carries out the technological means of electrochemistry lithiumation or chemistry lithiumation process then needs extra lithium
Changing the pole piece activity after technical matters, and prelithiation relatively strong, temperature/humidity and atmosphere to environment are wanted
Ask the most harsh.Therefore, there is complex process/environmental Kuznets Curves and require the shortcomings such as harsh in current prelithiation technology.
Summary of the invention
The present invention be in order to solve the lithium ion battery of prior art can reduce in use in positive electrode lithium from
The problem of the utilization rate of son, it is provided that a kind of compatibility is reasonable, can improve battery and take off lithium capacity, first charge and discharge first
The prelithiation lithium ion secondary battery anode material of electrical efficiency and energy density.
To achieve these goals, the present invention is by the following technical solutions:
A kind of prelithiation lithium ion secondary battery anode material, described prelithiation lithium ion secondary battery anode material
Being made up of the component of following weight portion: 88～95 parts of positive active materials, 0.5～3 part of conductive agent, 0.7～4 part is glued
Connect agent, 2～10 parts of nano-lithium fluorides.Optimal improvements of the present invention positive electrode formula, especially with the addition of nanometer
Lithium fluoride, nano-lithium fluoride is different from pre existing lithiation reagent, its stable chemical nature, be difficult to in air
Gas reacts, it is possible to stable existence in suitable environment, and storage technological requirement is low, can be directly as adding
Add agent to be added in anode sizing agent, prepare pole piece together with positive electrode, to existing process conditions without particular/special requirement,
Reducing technique manufacture and environmental Kuznets Curves cost, the Li-F key occurred under high voltages furthermore with lithium fluoride breaks
Split process, be possible not only to provide lithium ion into battery, moreover it is possible to provide F doping possible for positive electrode, improve
The stability of positive electrode.
As preferably, described positive active material is lithium nickel cobalt manganese ternary material or rich lithium manganese base solid solution material.
As preferably, described lithium nickel cobalt manganese ternary material formula is LiNixM(1-x)O2, wherein M=Co, Mn,
One or more in Al, 0.6≤x is less than 1.
As preferably, described rich lithium manganese base solid solution material formula is xLi2MnO3(1～x) LiYO2, wherein,
Y is the one in Co, Mn, Mg, Ni, Cr, Al, Ti, Mo, Nd, and 0 ＜ x ＜ 1.
As preferably, described conductive agent is the one or many in acetylene black, Ketjen black, Super P-Li, ECP
Kind.
As preferably, described binding agent is PVDF.
As preferably, described nano-lithium fluoride prepares by the following method: analytically pure lithium fluoride is placed in inertia
In the ball-grinding machine of atmosphere protection, spheroidal graphite 12～48h, i.e. obtain nano-lithium fluoride.Prepared by ball milling, no
Relating to harsh environmental Kuznets Curves, processing step is simple, and workable and prepared nano-lithium fluoride is not
There is spontaneous combustion probability, there is the advantages such as safety/cheap.
Therefore, there is advantages that Optimal improvements positive electrode formula, especially with the addition of
Nano-lithium fluoride so that whole positive electrode prelithiation, good stability, can improve battery take off first lithium capacity,
First charge-discharge efficiency and energy density.
Detailed description of the invention
Below by detailed description of the invention, the present invention will be further described.
Embodiment 1
(1) analytically pure lithium fluoride is placed in the ball-grinding machine of inert atmosphere protection, spheroidal graphite 12h, to obtain final product
To nano-lithium fluoride, stand-by；
(2) 88g positive electrode active material lithium-nickel-cobalt manganese ternary material LiNi is pressed0.5Co0.2Mn0.3O2, 0.5g conducts electricity
Agent acetylene black, 0.7g bonding agent PVDF, the proportioning of 2g nano-lithium fluoride weighs each component, each component is added
Organic solvent is made anode sizing agent.
Embodiment 2
(1) analytically pure lithium fluoride is placed in the ball-grinding machine of inert atmosphere protection, spheroidal graphite 20h, to obtain final product
To nano-lithium fluoride, stand-by；
(2) 90g positive electrode active material lithium-nickel-cobalt manganese ternary material LiNi0.4Co0.2Mn0.4O is pressed2, 2g leads
Electricity agent acetylene black and Ketjen black (mass ratio 1:1), 2g bonding agent PVDF, the proportioning of 5g nano-lithium fluoride claims
Take each component, each component is added in organic solvent and makes anode sizing agent.
Embodiment 3
(1) analytically pure lithium fluoride is placed in the ball-grinding machine of inert atmosphere protection, spheroidal graphite 48h, to obtain final product
To nano-lithium fluoride, stand-by；
(2) by 88～95 parts of positive active material rich lithium manganese base solid solution material 0.8Li2MnO3·0.8LiMoO2,
3g conductive agent Super P-Li, 4g bonding agent PVDF, the proportioning of 10g nano-lithium fluoride weighs each component, will
Each component adds in organic solvent makes anode sizing agent.
The slurry each embodiment made is coated, be dried, roll and make positive plate, uses graphite as negative pole
Sheet, is assembled into the full battery that model is 2025, and the full battery made carries out first week efficiency for charge-discharge test,
The result of test is as follows:
| Sample | Efficiency |
| Embodiment 1 | 85.4% |
| Embodiment 2 | 80.2% |
| Embodiment 3 | 84.3% |
From upper table it will be seen that the prelithiation lithium ion secondary battery anode material of the present invention can be effectively improved full electricity
The coulombic efficiency in pond, shows good chemical stability and active electrochemical stability, can be to secondary lithium
The electrode of ion battery carry out mend lithium, can be applicable to electric automobile, hybrid vehicle, mobile electronic device and
Other electronic products.
Embodiment described above is the one preferably scheme of the present invention, and the present invention not makees any form
On restriction, on the premise of without departing from the technical scheme described in claim, also have other variant and change
Type.
Claims (7)
1. a prelithiation lithium ion secondary battery anode material, it is characterised in that described prelithiation lithium ion secondary
Cell positive material is made up of the component of following weight portion: 88～95 parts of positive active materials, 0.5～3 part of conduction
Agent, 0.7～4 part of bonding agent, 2～10 parts of nano-lithium fluorides.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 1, it is characterised in that
Described positive active material is lithium nickel cobalt manganese ternary material or rich lithium manganese base solid solution material.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 2, it is characterised in that
Described lithium nickel cobalt manganese ternary material formula is LiNixM(1-x)O2, wherein the one in M=Co, Mn, Al or
Multiple, 0.6≤x is less than 1.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 2, it is characterised in that
Described rich lithium manganese base solid solution material formula is xLi2MnO3(1～x) LiYO2, wherein, Y is Co, Mn,
One in Mg, Ni, Cr, Al, Ti, Mo, Nd, and 0 ＜ x ＜ 1.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 1, it is characterised in that
Described conductive agent is one or more in acetylene black, Ketjen black, Super P-Li, ECP.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 1, it is characterised in that
Described binding agent is PVDF.
A kind of prelithiation lithium ion secondary battery anode material the most according to claim 1, it is characterised in that
Described nano-lithium fluoride prepares by the following method: analytically pure lithium fluoride is placed in the ball milling of inert atmosphere protection
In equipment, spheroidal graphite 12～48h, i.e. obtain nano-lithium fluoride.
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018137169A1 (en) * | 2017-01-25 | 2018-08-02 | 罗伯特·博世有限公司 | Lithium ion battery and preparation method therefor |
| CN108365174A (en) * | 2018-03-23 | 2018-08-03 | 复旦大学 | A kind of prelithiation method of anode material for lithium-ion batteries |
| CN109473668A (en) * | 2018-10-26 | 2019-03-15 | 溧阳天目先导电池材料科技有限公司 | A kind of modified prelithiation material and preparation method thereof and lithium battery |
| CN109560257A (en) * | 2017-09-25 | 2019-04-02 | 银隆新能源股份有限公司 | A kind of lithium ion battery anode glue size and preparation method thereof |
| CN109638237A (en) * | 2018-11-26 | 2019-04-16 | 华南理工大学 | A kind of compound anode material for lithium-ion batteries and preparation method thereof |
| CN109888274A (en) * | 2018-12-24 | 2019-06-14 | 中国电子科技集团公司第十八研究所 | Pre-lithiated lithium ion battery positive electrode material and preparation method thereof |
| CN110061202A (en) * | 2019-03-18 | 2019-07-26 | 合肥国轩高科动力能源有限公司 | Preparation method of ternary battery positive pole piece and ternary battery |
| CN110176641A (en) * | 2019-06-03 | 2019-08-27 | 哈尔滨工业大学 | A kind of nanometer of LiF/Fe/ graphite anode mends the preparation method and applications of lithium slurry |
| CN110212184A (en) * | 2019-06-04 | 2019-09-06 | 安徽科达新材料有限公司 | A kind of prelithiation method of carbon negative electrode material of lithium ion cell |
| CN110233244A (en) * | 2019-06-28 | 2019-09-13 | 北京科技大学 | A kind of nickelic tertiary cathode material particle surface stabilization treatment method |
| EP3573142A1 (en) | 2018-05-25 | 2019-11-27 | Volkswagen Aktiengesellschaft | Cathode assembly and method for its manufacture |
| EP3573143A1 (en) | 2018-05-25 | 2019-11-27 | Volkswagen Aktiengesellschaft | Lithium anode and method for its manufacture |
| EP3573141A1 (en) | 2018-05-25 | 2019-11-27 | Volkswagen Aktiengesellschaft | Lithium anode and method for its manufacture |
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