CN1412880A - Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it - Google Patents
Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it Download PDFInfo
- Publication number
- CN1412880A CN1412880A CN02134461A CN02134461A CN1412880A CN 1412880 A CN1412880 A CN 1412880A CN 02134461 A CN02134461 A CN 02134461A CN 02134461 A CN02134461 A CN 02134461A CN 1412880 A CN1412880 A CN 1412880A
- Authority
- CN
- China
- Prior art keywords
- battery
- cell
- lithium ion
- carbon
- positive pressure
- 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
Classifications
-
- 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
Abstract
The secondary lithium ion cell opening positive pressure formation method includes the following steps: using the aged cell in which the electrolyte in injected, sealing its electrolyte-injecting hole with adhesive paper, placing said cell on the charging cabinet, using small current to make constant current charge by 0.01-1c, then using 0.05C-10C heavy current to make constant current charge and ageing at 30-80 deg.C for 0.5-160 hr. Said method for making cell includes production of positive pole piece anjd negative pole piiece, after aged, it is used for making cell, and can be used for raising cell volume and prolonging service life of cell.
Description
Technical Field
The present invention relates to secondary lithium ion cell, and is especially positive pressure synthesis process of hahaxate cell and its cell making process.
Background
The present formation method of secondary lithium ion battery is implemented after the battery is made and the liquid injection hole is sealed. The formation process forms the electrode surface protection film by changing the charging process, such as setting the current magnitude, temperature, time, pressure, and the like. The method has the following disadvantages: harmful gases generated by side reactions accompanying the main reaction cannot be removed in time, but are stored in the battery as impurities, and continue to interfere with and destroy the charge-discharge reaction of the battery.
For lithium ion batteries, during initial charging, a passivation thin layer covering the surface of a carbon electrode is inevitably formed on a phase interface between the carbon cathode and an electrolyte due to an electrochemical reaction, and the thin layer is a Solid Electrolyte Interface (SEI) film.
Formation of SEI film, on the one hand, made impossibleThe reverse capacity loss, on the other hand, also increases the resistance of the electrode/electrolyte interface, causing voltage hysteresis, etc. Therefore, it is desirable to form a stable, dense SEI film. The SEI film formed by different manufacturers, which have different battery production processes and different initial charge setting parameters, often passes through Li+Some solvating molecules, ions, etc. are also passed, resulting in a degradation of the battery performance. The importance of designing the process and controlling the parameters can thus be seen.
The gas present in the cell is mainly O2、N2、CH4、C2H6、C2H4Etc. since the process of manufacturing the battery is performed in the atmosphere, the battery has more or less O2And N2The remaining gases are believed to be generated during cell formation and use.
An SEI film is formed on the surface of the carbon negative electrode during formation, and the main component of the SEI film is Li2CO3、CH3OCO2Li、LiF、Li2O, etc., having the formula:
CH3OCO2li and Li2CO3Is a highly effective passivation film formed during formation, but C2H4The gas is not desired to be generated and should be released for removal.
Disclosure of Invention
The invention aims to provide a positive pressure formation method of an opening of a lithium secondary lithium ion battery, which improves the battery capacity, reduces the risk of air expansion and prolongs the service life of the battery by improving the charge-discharge process, parameters and sealing method of the lithium ion battery.
Another object of the present invention is to disclose a method for manufacturing a lithium ion battery using the open-ended positive pressure formation method.
The positive pressure formation method of secondary lithium ion cell opening is implemented by the following steps:
the battery which is injected with electrolyte and is aged is sealed by gummed paper, the battery is placed on a charging and discharging cabinet, the battery is charged with small current and constant current, then the battery is charged with large current and constant current, the battery is placed in an inert gas or low-pressure environment with constant temperature after the charging is finished, the battery is aged to enable the gas in the battery to be completely escaped, and then the battery is sealed permanently to prepare the high-capacity lithium ion battery.
The low-current constant current charging is carried out at 0.01C to 1C, preferably 0.05C to 0.2C. The high-current constant-current charging speed is 0.05-10C, preferably 0.08-2C, and the charging is stopped when the battery voltage is 2.7-5V. The aging temperature is 30-80 ℃, preferably 35-60 ℃, and the aging time is 0.5-160 hours, preferably 5-100 hours. The method of the invention can overcome the defect that harmful gas generated in the general process is remained in the lithium ion battery, thereby improving the utilization rate of the anode and cathode active materials and effectively increasing the capacity of the lithium ion battery.
Lithium ion batteries are generally sealed because such batteries are very water-resistant and generally require operation at a relative humidity of less than 2%, thus requiring expensive drying chambers. The open positive pressure formation method is determined based on the mechanism of the formation process. Because in the formation process, part of the current is converted into heat, the internal temperature of the battery is increased, and the gas adsorbed in the battery is expanded and escaped. Meanwhile, during the formation process, some gas is generated due to electrochemical reaction. The formation and the escape of the gases enable the pressure inside the battery to be higher than that of the external environment, so that the moisture and the air outside can be controlled, and the harmful gases inside can be pushed open the sealing adhesive paper to be discharged. That is to say, as long as the interior of the battery is in a positive pressure state, the formation of the battery can be ensured without being influenced by external moisture, the formation quality is ensured, and the aim of removing harmful gases is fulfilled. The method has low requirements on equipment and environmental conditions, and is suitable for industrial production.
The opening positive pressure formation method is characterized in that a good solid electrolyte interface can be formed in the battery; the danger of air expansion after the battery is sealed is greatly reduced by exhausting a large amount of gas during formation; due to the improvement of the quality of the battery, the capacity and the service life of the battery are improved.
The opening positive pressure formation method has the advantages that the requirement on the environmental moisture is reduced when the battery is manufactured, and the manufacturing equipment and the supporting facilities are simplified, so that the manufacturing cost of the battery is reduced.
The steps of manufacturing the battery by the positive pressure formation method are as follows.
1. Mixing the positive active material, the conductive agent, the adhesive and the solvent into paste according to the weight percentage (the same below), taking 20 mu m aluminum foil as a current collector, coating the paste on the aluminum foil, drying, rolling and the like to prepare the positive plate with the thickness of 50-250 mu m.
2, mixing the negative active carbon material, the conductive agent, the adhesive and the solvent into paste, using 10 mu m aluminum foil as a current collector, coating the paste on the aluminum foil, drying and rolling to prepare a negative plate with the thickness of 50-250 mu m.
And 3, cutting the positive and negative plates into proper sizes according to batteries of different models, winding the positive and negative plates together with the diaphragm into a battery core, spot-welding a tab, then placing the tab into a battery shell, performing laser sealing on the shell and a cover plate, then injecting electrolyte, and placing the battery shell in an inert atmosphere for aging.
The specific method for positive pressure opening formation comprises the following steps: sealing the electrolyte injection hole of the aged battery injected with the electrolyte by using gummed paper, placing the battery on a charging and discharging cabinet, and firstly carrying out small-current constant-current charging, wherein the current is 0.01-1C. And then, charging with a large current and a constant current, wherein the current is 0.05-10 ℃, charging to the voltage of the battery of 2.7-5V, stopping charging, taking the battery down, putting the battery into an inert gas or low-pressure environment with the constant temperature of 30-80 ℃, aging for 0.5-240 hours to enable the gas in the battery to completely escape, and then permanently sealing the liquid injection hole to prepare the high-capacity lithium ion battery.
The positive active materials used in the invention are lithium cobaltate, lithium nickelate, lithium ferrate and lithium manganate.
The negative active material used in the present invention is activated carbon, graphite, modified artificial graphite, carbon particles, coated carbon, and carbon nanomaterial.
The conductive agent used in the invention is acetylene black, carbon fiber, graphite and carbon nano material.
The adhesive used by the invention is polytetrafluoroethylene, polyvinylidene fluoride, polyester resin, modified starch and modified fiber.
The solvent used in the invention is N-methyl pyrrolidone, dimethyl formamide, dimethyl acetamide and pure water.
The diaphragm material used in the invention is a non-woven film formed by surface treatment and lamination of polypropylene resin and polyethylene resin. Or has good flame resistance andmechanical strength and electrical conductivity up to 10-3s cm-1PVDF-HFP, or PEO polymer systems, PAN polymer systems, PVDF polymer systems, and PMMA polymer systems.
The electrolyte used in the present invention is an organic nonaqueous electrolyte. The solvent can be AN, BC, DEC, DIOX, DMC, DME, DPA, EA, EB, EC, EF, EMC, EP, GBL, MB, DMC,MF, MP, MPC, NMP, PC, THF, or binary or higher composite electrolyte thereof. LiPF is selected as electrolyte6、LiBF4、LiClO4、LiAsF6Or LiCF3SO3。
Detailed Description
1. According to the weight percentage (the same below), 92 percent of positive active material lithium cobaltate, 4 percent of conductive agent graphite and 4 percent of polyvinylidene fluoride adhesive are mixed into paste by taking N-methyl pyrrolidone as a solvent. And (3) taking an aluminum foil with the thickness of 20 mu m as a current collector, coating the paste on the aluminum foil, drying, rolling and the like to prepare the positive plate with the thickness of 170 mu m.
2. The mixture was prepared into a paste by mixing 90% of a negative electrode active material carbon/graphite material MCMB, 2% of a conductive agent (same as above), 8% of a binder (same as above) and N-methylpyrrolidone as a solvent. And (3) taking 10-micron aluminum foil as a current collector, coating the paste on the aluminum foil, drying and rolling to prepare the negative plate with the thickness of 160 microns.
3. The diaphragm material is a non-woven film formed by carrying out surface treatment and lamination on polypropylene resin and polyethylene resin.
4. The electrolyte is an organic nonaqueous electrolyte. The solvent is DEC/DMC/EC, and the electrolyte is LiPF6。
5. Cutting the positive and negative plates into proper size, winding the plates and the diaphragm into a battery core, spot-welding the tabs, placing the tabs into a battery shell, laser-sealing the shell and the cover plate, injecting electrolyte, and placing the battery shell in an inert atmosphere for aging.
6. The specific method for forming the opening by positive pressure comprises the following steps: sealing the electrolyte injection hole of the aged battery injected with electrolyte by using gummed paper, placing the battery on a charging and discharging cabinet, and firstly carrying out small-current constant-current charging, wherein the current is 0.01C, and the charging time is 10 hours. And then increasing the current for constant current charging, wherein the current is 0.1C, charging to the voltage of the battery of 4.2V, namely stopping charging, taking the battery down, putting the battery into an environment with constant temperature of 50 ℃, aging for 10 hours to enable gas in the battery to escape, and permanently sealing the liquid injection hole to prepare the high-capacity lithium ion battery.
Claims (9)
1. A positive pressure formation method of secondary lithium ion battery opening is characterized by comprising the following steps: sealing the electrolyte injection hole of the aged battery injected with the electrolyte by using gummed paper, placing the battery on a charging and discharging cabinet, carrying out low-current constant-current charging at 0.01-1 ℃, then carrying out high-current constant-current charging at 0.05-10 ℃, and aging for 0.5-160 hours at 30-80 ℃.
2. The positive pressure synthesis method of secondary lithium ion cell openings of claim 1, wherein the small current constant current charging is carried out by 0.05C-0.2C, then the large current constant current charging is carried out by 0.08C-2C, the charging is carried out until the cell voltage is 2.7V-5V, and the aging is carried out for 5-100 hours at 35-60 ℃.
3. A method for manufacturing lithium secondary lithium ion batteries by using the positive pressure chemical synthesis method of claim 1, which is characterized by comprising the following steps: mixing the positive active material, the conductive agent, the adhesive and the solvent into paste, coating the paste on an aluminum foil with the thickness of 20 microns by taking the aluminum foil as a current collector, drying, rolling and the like to prepare a positive plate with the thickness of 50-250 microns; mixing the negative active carbon material, the conductive agent, the adhesive and the solvent into paste, coating the paste on an aluminum foil with the thickness of 10 microns by taking the aluminum foil as a current collector, drying and rolling to prepare a negative plate with the thickness of 50-250 microns; according to batteries of different types, the positive and negative plates are cut into proper sizes, wound into a battery core together with the diaphragm, spot-welded with the tabs and then placed into a battery shell, the shell and the cover plate are sealed by laser, then electrolyte is injected, and the battery shell is placed in an inert atmosphere for aging; -forming and sealing the package according to the method of claim 1.
4. The method according to claim 3, wherein the positive electrode active material is lithium cobaltate, lithium nickelate, lithium ferrate, or lithium manganate.
5. The method according to claim 3, wherein the negative active material is activated carbon, graphite, modified artificial graphite, carbon fine particles, or coated carbon and carbon nanomaterial.
6. The method according to claim 3, characterized in that the conductive agent used is acetylene black, carbon fibers, graphite, or carbon nanomaterials.
7. A method according to claim 3, characterized in that the binder used is polytetrafluoroethylene, polyvinylidene fluoride, polyester resin, modified starch, or modified fibres.
8. The process according to claim 3, characterized in that the solvent used is N-methylpyrrolidone, dimethylformamide, dimethylacetamide, or pure water.
9. The method according to claim 3, wherein the separator material is a non-woven film obtained by surface-treating and laminating a polypropylene resin, a polyethylene resin; or conductivity of 10-3s cm-1PVDF-HFP, or PEO polymer systems, PAN polymer systems, PVDF polymer systems, PMMA polymer systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021344612A CN1181591C (en) | 2002-07-30 | 2002-07-30 | Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021344612A CN1181591C (en) | 2002-07-30 | 2002-07-30 | Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1412880A true CN1412880A (en) | 2003-04-23 |
| CN1181591C CN1181591C (en) | 2004-12-22 |
Family
ID=4747758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021344612A Expired - Fee Related CN1181591C (en) | 2002-07-30 | 2002-07-30 | Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181591C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100428556C (en) * | 2006-05-18 | 2008-10-22 | 复旦大学 | Method for producing super-low-temperature lithium-ion cell |
| CN101315994B (en) * | 2007-05-31 | 2010-06-02 | 上海比亚迪有限公司 | Formation method for lithium ion secondary battery |
| CN101212066B (en) * | 2006-12-28 | 2010-10-06 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| CN101212067B (en) * | 2006-12-29 | 2010-10-13 | 上海比亚迪有限公司 | Li-ion secondary battery formation method |
| CN101243565B (en) * | 2005-08-19 | 2010-12-22 | 株式会社Lg化学 | Electrochemical device with high capacity and method for preparing the same |
| CN101459262B (en) * | 2007-12-13 | 2011-04-20 | 比亚迪股份有限公司 | Manufacturing method for lithium ionic cell |
| CN102185166A (en) * | 2011-04-06 | 2011-09-14 | 恒正科技（苏州）有限公司 | Battery forming and repairing method |
| CN102208685A (en) * | 2011-05-04 | 2011-10-05 | 恒正科技（苏州）有限公司 | Processing method for formation of lithium ion batteries |
| CN102938472A (en) * | 2011-08-16 | 2013-02-20 | 上海德朗能电池有限公司 | Formation method of lithium ion battery with lithium titanate as negative electrode and lithium ion battery manufactured by the same |
| CN102956932A (en) * | 2011-08-18 | 2013-03-06 | 北汽福田汽车股份有限公司 | Lithium ion secondary battery core aging method |
| CN106299461A (en) * | 2016-09-20 | 2017-01-04 | 东莞锂威能源科技有限公司 | A kind of high energy density lithium ion battery core chemical synthesis technology |
| CN106816657A (en) * | 2015-11-27 | 2017-06-09 | 深圳市比克动力电池有限公司 | The charging water-eliminating method and lithium ion battery manufacture process of lithium ion battery |
| CN108140894A (en) * | 2015-10-05 | 2018-06-08 | 国立大学法人东京大学 | Has the manufacturing method of the secondary cell of overlay film in electrode surface |
| CN111628136A (en) * | 2020-06-04 | 2020-09-04 | 萨姆蒂萨（天津）数据信息技术有限公司 | Lithium ion pole piece battery pack liquid injection and opening activation method |
| CN113113683A (en) * | 2021-03-12 | 2021-07-13 | 江门市力源电子有限公司 | Formation method of low self-discharge lithium ion battery |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1925204B (en) * | 2005-08-31 | 2010-10-13 | 深圳市比克电池有限公司 | Electric core optimizing method for lithium ion battery |
-
2002
- 2002-07-30 CN CNB021344612A patent/CN1181591C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101243565B (en) * | 2005-08-19 | 2010-12-22 | 株式会社Lg化学 | Electrochemical device with high capacity and method for preparing the same |
| CN100428556C (en) * | 2006-05-18 | 2008-10-22 | 复旦大学 | Method for producing super-low-temperature lithium-ion cell |
| CN101212066B (en) * | 2006-12-28 | 2010-10-06 | 比亚迪股份有限公司 | Li-ion secondary battery formation method |
| CN101212067B (en) * | 2006-12-29 | 2010-10-13 | 上海比亚迪有限公司 | Li-ion secondary battery formation method |
| CN101315994B (en) * | 2007-05-31 | 2010-06-02 | 上海比亚迪有限公司 | Formation method for lithium ion secondary battery |
| CN101459262B (en) * | 2007-12-13 | 2011-04-20 | 比亚迪股份有限公司 | Manufacturing method for lithium ionic cell |
| CN102185166A (en) * | 2011-04-06 | 2011-09-14 | 恒正科技（苏州）有限公司 | Battery forming and repairing method |
| CN102185166B (en) * | 2011-04-06 | 2013-07-24 | 恒正科技（苏州）有限公司 | Battery forming and repairing method |
| CN102208685B (en) * | 2011-05-04 | 2013-07-10 | 恒正科技（苏州）有限公司 | Processing method for formation of lithium ion batteries |
| CN102208685A (en) * | 2011-05-04 | 2011-10-05 | 恒正科技（苏州）有限公司 | Processing method for formation of lithium ion batteries |
| CN102938472A (en) * | 2011-08-16 | 2013-02-20 | 上海德朗能电池有限公司 | Formation method of lithium ion battery with lithium titanate as negative electrode and lithium ion battery manufactured by the same |
| CN102956932A (en) * | 2011-08-18 | 2013-03-06 | 北汽福田汽车股份有限公司 | Lithium ion secondary battery core aging method |
| CN108140894A (en) * | 2015-10-05 | 2018-06-08 | 国立大学法人东京大学 | Has the manufacturing method of the secondary cell of overlay film in electrode surface |
| US10797350B2 (en) | 2015-10-05 | 2020-10-06 | Kabushiki Kaisha Toyota Jidoshokki | Method for producing secondary battery including coating on electrode surface |
| CN108140894B (en) * | 2015-10-05 | 2021-06-22 | 株式会社丰田自动织机 | Method for manufacturing secondary battery having coating film on electrode surface |
| CN106816657A (en) * | 2015-11-27 | 2017-06-09 | 深圳市比克动力电池有限公司 | The charging water-eliminating method and lithium ion battery manufacture process of lithium ion battery |
| CN106299461A (en) * | 2016-09-20 | 2017-01-04 | 东莞锂威能源科技有限公司 | A kind of high energy density lithium ion battery core chemical synthesis technology |
| CN106299461B (en) * | 2016-09-20 | 2018-10-12 | 东莞锂威能源科技有限公司 | A kind of high energy density lithium ion battery core chemical synthesis technology |
| CN111628136A (en) * | 2020-06-04 | 2020-09-04 | 萨姆蒂萨（天津）数据信息技术有限公司 | Lithium ion pole piece battery pack liquid injection and opening activation method |
| CN113113683A (en) * | 2021-03-12 | 2021-07-13 | 江门市力源电子有限公司 | Formation method of low self-discharge lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1181591C (en) | 2004-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101031880B1 (en) | Electrode Assembly and Lithium secondary Battery having the Same | |
| CN110165284B (en) | Lithium ion secondary battery | |
| KR100670483B1 (en) | Lithium secondary battery | |
| CN1181591C (en) | Positive pressure chernical synthesis method of secondary lithium ion cell opening and method for making cell by it | |
| US8334073B2 (en) | Non-aqueous electrolyte secondary battery and method of manufacturing negative electrode thereof | |
| WO2019112390A1 (en) | Anode active material for lithium secondary battery and method for manufacturing same | |
| KR20200030482A (en) | Methods for preparing negative electrode for lithium secondary battery and lithium secondary battery | |
| CN102361095B (en) | Lithium ion battery with high specific power and preparation method for same | |
| US20140030595A1 (en) | Lithium-ion secondary battery | |
| CN114552125B (en) | Nondestructive lithium supplement composite diaphragm and preparation method and application thereof | |
| US7314683B2 (en) | Carbon compound-adsorbed cathode active material and lithium battery using the same | |
| KR20020011108A (en) | Carbon substrate, anode for lithium ion rechargeable battery and lithium ion rechargeable battery | |
| CN112563563A (en) | Composite solid electrolyte, solid battery and preparation method thereof | |
| US20230193084A1 (en) | Adhesive tape and electrochemical apparatus including such adhesive tape | |
| CN116613274A (en) | Negative electrode sheet, secondary battery including the same, and electronic device | |
| KR20210034985A (en) | Method for manufacturing secondary battery | |
| KR100693397B1 (en) | Negative electrodes for rechargeable batteries | |
| KR101679367B1 (en) | Carbon-silicon composite structure and preparing method of the same | |
| KR20230093521A (en) | Electrochemical and Electronic Devices | |
| JP4075180B2 (en) | Nonaqueous electrolyte and lithium secondary battery using the same | |
| JP2002042874A (en) | Polymer secondary battery | |
| CN116404265B (en) | Electrochemical device and electronic device | |
| US20030077516A1 (en) | Cell incorporating polymer electrolyte | |
| CN114497483B (en) | Negative plate, preparation method thereof and lithium ion battery | |
| KR101420757B1 (en) | Electrode for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |