CN112151803A - Preparation process of lithium ion battery cathode slurry - Google Patents
Preparation process of lithium ion battery cathode slurry Download PDFInfo
- Publication number
- CN112151803A CN112151803A CN202011028972.3A CN202011028972A CN112151803A CN 112151803 A CN112151803 A CN 112151803A CN 202011028972 A CN202011028972 A CN 202011028972A CN 112151803 A CN112151803 A CN 112151803A
- Authority
- CN
- China
- Prior art keywords
- glue solution
- lithium ion
- ion battery
- preparation process
- negative electrode
- 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.)
- Granted
Links
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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M4/621—Binders
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a preparation process of lithium ion battery cathode slurry, which comprises the following steps: (1) uniformly mixing polyacrylic acid glue solution and lithium hydroxide according to a ratio to obtain glue solution A; (2) uniformly mixing sodium carboxymethylcellulose and deionized water according to a ratio to obtain a glue solution B; (3) uniformly mixing the glue solution A and the glue solution B according to the proportion to obtain a glue solution C; (4) uniformly mixing the negative electrode additive magnesium lithium silicate and the glue solution C according to the proportion to obtain a glue solution D; (5) and mixing, stirring and dispersing the glue solution D, graphite, conductive carbon, aqueous binder LA133, ethylene carbonate and deionized water to obtain the cathode slurry. According to the preparation process of the lithium ion battery cathode slurry, the prepared cathode slurry is good in stability and high in solid content, and the lithium ion battery prepared from the cathode slurry is high in first efficiency, high in capacity and excellent in cycle performance.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a preparation process of lithium ion battery cathode slurry.
Background
The lithium ion battery has the advantages of no memory effect, environmental protection, no pollution, long cycle life, low self-discharge and the like, and is widely applied to the fields of electronic products, energy storage power stations, power automobiles, emergency power supplies and the like. However, the driving range of the power battery carried by the current automobile is generally not high, and the limited space in the energy storage system needs to accommodate more electric quantity, so that the demand of people on the high-capacity battery is more and more urgent, and therefore, the urgent need is to improve the capacity of the battery core as much as possible on the premise of ensuring the safety. The preparation process of the slurry has a non-negligible influence on the improvement of the capacity of the battery cell, and is an important link in the whole production process of the lithium ion battery.
Generally, the anode slurry is prepared as follows: after mixing graphite and a conductive agent, adding pre-dissolved sodium carboxymethylcellulose, stirring at a low speed, adding an aqueous binder LA133, Ethylene Carbonate (EC) and deionized water, and dispersing at a high speed to prepare slurry. However, the pulp mixing process has the following disadvantages: the stability of the slurry is slightly poor, the solid content of the slurry is low, and the first charge-discharge efficiency of the battery is low.
Disclosure of Invention
The invention aims to provide a preparation process of lithium ion battery cathode slurry, and the prepared cathode slurry has good stability and high solid content, so that the lithium ion battery prepared from the cathode slurry has high first efficiency, high capacity and excellent cycle performance.
The technical scheme adopted by the invention for solving the problems is as follows: a preparation process of lithium ion battery negative electrode slurry comprises the following steps:
(1) and uniformly mixing the polyacrylic acid glue solution and lithium hydroxide in proportion to obtain a glue solution A.
(2) And uniformly mixing sodium carboxymethylcellulose and deionized water in proportion to obtain a glue solution B.
(3) And (3) uniformly mixing the glue solution A obtained in the step (1) and the glue solution B obtained in the step (2) in proportion to obtain a glue solution C.
(4) And (4) uniformly mixing the cathode additive magnesium lithium silicate with the glue solution C obtained in the step (3) in proportion to obtain a glue solution D.
(5) And (3) adding the glue solution D obtained in the step (4) into mixed powder of graphite and conductive carbon, stirring at a low speed, adding a water-based adhesive LA133, ethylene carbonate and deionized water, and dispersing at a high speed to obtain slurry.
Preferably, the solid content of the polyacrylic acid glue solution in the step (1) is 20-30%, and the mass ratio of the polyacrylic acid glue solution to the lithium hydroxide is 1: 0.10-0.14.
Preferably, the mass ratio of the sodium carboxymethylcellulose to the deionized water in the step (2) is 1: 45-65.
Preferably, the mass ratio of the glue solution A to the glue solution B in the step (3) is 1: 20-50.
Preferably, the mass ratio of the negative electrode additive lithium magnesium silicate to the glue solution C in the step (4) is 1: 50-80.
Preferably, the mass ratio of the glue solution D, the graphite, the conductive carbon, the aqueous adhesive LA133, the ethylene carbonate and the deionized water in the step (5) is 0.1-0.4:1:0.01-0.03:0.1-0.4:0.005-0.02: 0.4-0.6.
Preferably, the revolution speed of the low-speed stirring in the step (5) is 10-20 rpm/min, the dispersion speed is 500-1000 rpm/min, and the stirring time is 20-60 min.
Preferably, the revolution speed of the high-speed dispersion in the step (5) is 20-35 rpm/min, the dispersion speed is 2000-3000 rpm/min, and the time is 150-240 min.
Compared with the prior art, the invention has the advantages that:
(1) in the preparation process of the lithium ion battery cathode slurry, the lithium polyacrylate (obtained by uniformly mixing the polyacrylic acid glue solution and the lithium hydroxide) and the cathode additive lithium magnesium silicate are added, wherein the lithium polyacrylate has the effects of increasing the pole piece bonding force and inhibiting particle pulverization, so that the cycle performance of the battery is improved; the magnesium lithium silicate has the effects of improving the suspension property and chemical stability of the slurry and further improving the solid content of the slurry, and the surface of the magnesium lithium silicate has a large number of exchangeable cations and further improves the first effect.
(2) The lithium ion battery cathode slurry provided by the invention overcomes the defects of poor stability, low first charge and discharge efficiency and the like of the lithium ion battery cathode slurry in the prior art, and the prepared cathode slurry has good stability and high solid content, so that the lithium ion battery prepared from the cathode slurry has the characteristics of high first efficiency, high capacity and excellent cycle performance.
Drawings
Fig. 1 is a graph showing the change in viscosity of the lithium ion battery negative electrode slurry according to example 1, comparative example 1 and comparative example 2 of the present invention.
Fig. 2 is a graph showing the variation of the capacity retention rate of the lithium ion batteries prepared from the lithium ion battery negative electrode slurry of example 1, comparative example 1 and comparative example 2.
Fig. 3 is a graph showing the change in viscosity of the lithium ion battery negative electrode slurry according to example 2, comparative example 3, and comparative example 4 of the present invention.
Fig. 4 is a graph showing the variation of the capacity retention rate of the lithium ion batteries prepared from the lithium ion battery negative electrode pastes in example 2, comparative example 3 and comparative example 4 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The graphite used in example 1, comparative example 1 and comparative example 2 was provided by shenzhen beibeibeiduli new energy materials gmbh.
The graphite used in example 2, comparative example 3 and comparative example 4 was supplied from New energy science and technology Co., Ltd, Dongguan city.
Example 1
A preparation process of lithium ion battery negative electrode slurry comprises the following steps:
(1) and uniformly mixing the polyacrylic acid glue solution and lithium hydroxide according to the mass ratio of 1:0.132 to obtain a glue solution A.
(2) Uniformly mixing sodium carboxymethylcellulose and deionized water according to the mass ratio of 1:50 to obtain a glue solution B.
(3) And mixing the glue solution A and the glue solution B according to the mass ratio of 1:25, and uniformly mixing to obtain a glue solution C.
(4) And mixing the magnesium lithium silicate and the glue solution C according to the mass ratio of 1:55, and uniformly mixing to obtain a glue solution D.
(5) Adding the glue solution D into the mixed powder of graphite and conductive carbon, and stirring at a low speed to wet the mixed powder, wherein the stirring parameters are as follows: the revolution speed is 15rpm/min, the dispersion speed is 600rpm/min, and the stirring time is 30 min; and then adding a water-based adhesive LA133, ethylene carbonate and deionized water for high-speed dispersion to obtain slurry, wherein the specific parameters are as follows: the revolution speed is 25rpm/min, the dispersion speed is 2200rpm/min, the time is 180min, wherein the mass ratio of the glue solution D, the graphite, the conductive carbon, the aqueous adhesive LA133, the ethylene carbonate and the deionized water is 0.15:1:0.01: 0.15:0.01:0.46.
Example 2
A preparation process of lithium ion battery negative electrode slurry comprises the following steps:
(1) and uniformly mixing the polyacrylic acid glue solution and lithium hydroxide according to the mass ratio of 1:0.128 to obtain a glue solution A.
(2) Uniformly mixing sodium carboxymethylcellulose and deionized water according to the mass ratio of 1:50 to obtain a glue solution B.
(3) And uniformly mixing the glue solution A and the glue solution B according to the mass ratio of 1:30 to obtain a glue solution C.
(4) And uniformly mixing the magnesium lithium silicate and the glue solution C according to the mass ratio of 1:50 to obtain a glue solution D.
(5) Adding the glue solution D into the mixed powder of graphite and conductive carbon, and stirring at a low speed to wet the mixed powder, wherein the stirring parameters are as follows: the revolution speed is 15rpm/min, the dispersion speed is 600rpm/min, and the stirring time is 30 min; and then adding a water-based adhesive LA133, ethylene carbonate and deionized water for high-speed dispersion to obtain slurry, wherein the specific parameters are as follows: the revolution speed is 25rpm/min, the dispersion speed is 2200rpm/min, and the time is 180min, wherein the mass ratio of the glue solution D, the graphite, the conductive carbon, the aqueous adhesive LA133, the ethylene carbonate and the deionized water is 0.15:1:0.01:0.15:0.01: 0.40.
Comparative example 1
The only difference from example 1 is: and (4) replacing the glue solution D in the step (5) with the glue solution B without the steps (3) and (4).
Comparative example 2
The only difference from example 1 is: and (4) replacing the glue solution D in the step (5) with the glue solution C without the step (4).
Comparative example 3
The only difference from example 2 is: and (4) replacing the glue solution D in the step (5) with the glue solution B without the steps (3) and (4).
Comparative example 4
The only difference from example 2 is: and (4) replacing the glue solution D in the step (5) with the glue solution C without the step (4).
The lithium ion battery negative electrode pastes obtained in examples 1 to 2 and comparative examples 1 to 4 were subjected to performance tests, the results of which are shown in table 1, fig. 1 and fig. 3:
TABLE 1 lithium ion battery cathode slurry Performance test results
Lithium ion batteries prepared from the negative electrode slurry obtained in the examples and the comparative examples are subjected to performance tests, and the performance test results are shown in table 2, fig. 2 and fig. 4; the preparation process specifically comprises the following steps: coiling positive plate, negative pole piece and lithium battery diaphragm into electric core, arranging electric core in the plastic-aluminum membrane and toasting, injecting electrolyte into electric core, sealing and stewing, then forming and ageing electric core to obtain lithium ion battery, wherein, the preparation of negative pole piece is: coating the negative electrode slurry obtained in the embodiment on two sides of a copper foil, drying at 50-90 ℃, and then sequentially performing cold pressing and stripping to obtain a negative electrode plate; lithium battery diaphragm: polyethylene separator supplied by Celgard corporation; electrolyte solution: lithium hexafluorophosphate (LiPF) containing 1M6) The solvent is a mixed solvent of methyl ethyl carbonate, dimethyl carbonate and ethylene carbonate which are in a volume ratio of 3: 2: 5; positive plate: the composite material is prepared by adding a positive electrode active material LFP, a positive electrode binder PVDF, a positive electrode conductive agent carbon black and coating a solvent NMP on an aluminum foil.
Table 2 performance results table for lithium ion batteries
The cathode slurry prepared by the preparation process has better stability within 48h, has higher solid content when the viscosities are basically consistent, and is more favorable for saving cost, the battery prepared from the slurry has high first efficiency, high capacity and excellent cycle performance, the capacity retention ratio of 2400 times of 1C/1C cycle of the battery in example 1 is 88.7%, and the capacity retention ratio of 2200 times of 1C/1C cycle of the battery in example 2 is 89.1%.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (8)
1. A preparation process of lithium ion battery cathode slurry is characterized by comprising the following steps: the method comprises the following steps:
(1) uniformly mixing polyacrylic acid glue solution and lithium hydroxide in proportion to obtain glue solution A;
(2) uniformly mixing sodium carboxymethylcellulose and deionized water in proportion to obtain a glue solution B;
(3) uniformly mixing the glue solution A obtained in the step (1) and the glue solution B obtained in the step (2) in proportion to obtain a glue solution C;
(4) uniformly mixing a negative electrode additive, namely magnesium lithium silicate, with the glue solution C obtained in the step (3) in proportion to obtain a glue solution D;
(5) and (3) adding the glue solution D obtained in the step (4) into mixed powder of graphite and conductive carbon, stirring at a low speed, adding a water-based adhesive LA133, ethylene carbonate and deionized water, and dispersing at a high speed to obtain slurry.
2. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: in the step (1), the solid content of the polyacrylic acid glue solution is 20-30%, and the mass ratio of the polyacrylic acid glue solution to the lithium hydroxide is 1: 0.10-0.14.
3. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: the mass ratio of the sodium carboxymethylcellulose to the deionized water in the step (2) is 1: 45-65.
4. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: and (4) the mass ratio of the glue solution A to the glue solution B in the step (3) is 1: 20-50.
5. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: the mass ratio of the negative electrode additive magnesium lithium silicate to the glue solution C in the step (4) is 1: 50-80.
6. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: the mass ratio of the glue solution D, the graphite, the conductive carbon, the aqueous adhesive LA133, the ethylene carbonate and the deionized water in the step (5) is 0.1-0.4:1:0.01-0.03:0.1-0.4:0.005-0.02: 0.4-0.6.
7. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: in the step (5), the revolution speed of the low-speed stirring is 10-20 rpm/min, the dispersion speed is 500-1000 rpm/min, and the stirring time is 20-60 min.
8. The preparation process of the lithium ion battery negative electrode slurry according to claim 1, characterized in that: in the step (5), the revolution speed of the high-speed dispersion is 20-35 rpm/min, the dispersion speed is 2000-3000 rpm/min, and the time is 150-240 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028972.3A CN112151803B (en) | 2020-09-27 | 2020-09-27 | Preparation process of lithium ion battery cathode slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028972.3A CN112151803B (en) | 2020-09-27 | 2020-09-27 | Preparation process of lithium ion battery cathode slurry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112151803A true CN112151803A (en) | 2020-12-29 |
| CN112151803B CN112151803B (en) | 2022-03-29 |
Family
ID=73897420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011028972.3A Active CN112151803B (en) | 2020-09-27 | 2020-09-27 | Preparation process of lithium ion battery cathode slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112151803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285057A (en) * | 2021-06-15 | 2021-08-20 | 多氟多新能源科技有限公司 | Lithium battery negative plate and manufacturing process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448074A (en) * | 2018-02-05 | 2018-08-24 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of lithium ion battery anode slurry |
| CN111672392A (en) * | 2020-05-29 | 2020-09-18 | 惠州亿纬创能电池有限公司 | Lithium ion battery cathode homogenizing process |
-
2020
- 2020-09-27 CN CN202011028972.3A patent/CN112151803B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448074A (en) * | 2018-02-05 | 2018-08-24 | 合肥国轩高科动力能源有限公司 | A kind of preparation method of lithium ion battery anode slurry |
| CN111672392A (en) * | 2020-05-29 | 2020-09-18 | 惠州亿纬创能电池有限公司 | Lithium ion battery cathode homogenizing process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285057A (en) * | 2021-06-15 | 2021-08-20 | 多氟多新能源科技有限公司 | Lithium battery negative plate and manufacturing process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112151803B (en) | 2022-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103035920B (en) | A kind of lithium ion battery and preparation method thereof | |
| CN111600020B (en) | Lithium ion battery and preparation method thereof | |
| CN104201384A (en) | A lithium ion battery anode piece and a manufacturing method thereof | |
| CN104795541A (en) | Lithium-ion battery negative electrode slurry preparation method | |
| CN111600064A (en) | Fast-charging lithium ion battery with high energy density and long service life and preparation method thereof | |
| CN111082140A (en) | Novel sodium ion battery electrolyte and sodium battery | |
| CN113675365A (en) | Negative plate and lithium ion battery | |
| CN116995192A (en) | Sodium-supplementing positive electrode plate, preparation method thereof and sodium ion battery | |
| CN110190258B (en) | Silicon-carbon composite material water-based composite slurry, preparation method thereof and lithium ion battery | |
| CN102769148A (en) | High-power lithium ion battery electrolyte | |
| CN102290566B (en) | Lithium battery anode preparing method and lithium battery | |
| CN110380057A (en) | A kind of overcharge-resisting lithium ion battery | |
| CN112151803B (en) | Preparation process of lithium ion battery cathode slurry | |
| CN103730631B (en) | A kind of lithium ion battery cathode material and its preparation method | |
| CN110212164B (en) | Method for improving energy density of lithium ion battery by using lithium salt | |
| CN102299339A (en) | Lithium titanate and lithium vanadium phosphate lithium ion battery and preparation method thereof | |
| CN116014355A (en) | Pre-sodium membrane and preparation method thereof | |
| CN102544576A (en) | Lithium ion battery | |
| CN113948679B (en) | Preparation method of pole piece for improving performance of silicon-based negative electrode lithium ion battery | |
| CN107093718B (en) | Low-temperature-resistant long-life lithium ion battery | |
| CN115020708A (en) | Water-based binder suitable for negative electrode and preparation method and application thereof | |
| CN115000537A (en) | Method for supplementing lithium to positive electrode | |
| CN113921803A (en) | Lithium supplementing method for lithium ion battery | |
| CN113299909A (en) | Preparation process of lithium ion battery anode slurry | |
| CN108695508B (en) | High-energy lithium battery negative electrode slurry and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |