CN101764266B - Energy storing assembly - Google Patents
Energy storing assembly Download PDFInfo
- Publication number
- CN101764266B CN101764266B CN2008101894294A CN200810189429A CN101764266B CN 101764266 B CN101764266 B CN 101764266B CN 2008101894294 A CN2008101894294 A CN 2008101894294A CN 200810189429 A CN200810189429 A CN 200810189429A CN 101764266 B CN101764266 B CN 101764266B
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- CN
- China
- Prior art keywords
- water
- polyacrylonitrile
- sticker
- based sticker
- polyacrylate
- 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.)
- Expired - Fee Related
Links
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 44
- 239000000126 substance Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 69
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 50
- 238000004146 energy storage Methods 0.000 claims description 24
- 229910012851 LiCoO 2 Inorganic materials 0.000 claims description 3
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 3
- 229910015645 LiMn Inorganic materials 0.000 claims description 3
- 229910015030 LiNiCoO Inorganic materials 0.000 claims description 3
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 claims description 3
- 229910021450 lithium metal oxide Inorganic materials 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 10
- 239000008151 electrolyte solution Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 description 7
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 229910012820 LiCoO Inorganic materials 0.000 description 5
- 229910013870 LiPF 6 Inorganic materials 0.000 description 5
- 239000006230 acetylene black Substances 0.000 description 5
- 239000005030 aluminium foil Substances 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 description 5
- 239000006255 coating slurry Substances 0.000 description 5
- 238000000840 electrochemical analysis Methods 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 5
- 159000000002 lithium salts Chemical class 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002174 Styrene-butadiene Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Images
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
Abstract
The invention provides an energy storing assembly which comprises a positive electrode, a negative electrode and electrolyte, wherein the positive electrode is mixed with a polyacrylate aqueous adhesive. The polyacrylate aqueous adhesive has the chemical formula, wherein X is alkyl with the carbon number of 1-6, and n is 500-2,500.
Description
Technical field
The present invention relates to a kind of energy storage component, particularly relates to a kind of energy storage component that is mixed with a polyacrylate water-based sticker in positive pole.
Background technology
Along with the development of portable electronic product and motor vehicle, have the energy storage component of characteristics such as high-energy, fast charging and discharging, long service time concurrently, become the main target of each side's exploitation.
In general, energy storage component can be divided into two kinds in battery and capacitor.
This comes store electrical energy as the chemical energy principle of utilizing redox to produce battery, in its design is to do long-lasting low discharging current under the normal operating position, so the exploitation of electrode material is to focus on long-time use and high electric weight storage aspect, therefore must possess the characteristic that high-energy-density is arranged.
And present stage relevant electrode material sticker use, the sticker that the present overwhelming majority is used in the positive electrode systems still is based on oil-based solvent, and also for some time, but the influence that environment is caused based on the organic system solvent and the consideration of fluorine-containing sticker cost costliness, the water-based sticker has its development necessity, therefore, how to seek suitable water-based sticker and be successfully applied in the lithium battery industry, promptly become one of problem that present exploitation positive electrode will face.Yet at present with the employed water-based sticker of commercialization, for example polyacrylonitrile (polyacrylonitrile) and styrene butadiene rubbers (SBR) etc., be used in the mixed slurry of positive electrode and usually produce battery pole plates adhesive force deficiency, the very large problem of electrode impedance, and then make battery performance not good.
Summary of the invention
The object of the present invention is to provide a kind of by in positive pole, being mixed with the energy storage component of a polyacrylate water-based sticker, be used in positive electrode and mix in the slurry generation thereby overcome existing water-based sticker basically, and then cause the not good defective of battery performance battery pole plates adhesive force deficiency and the very large problem of electrode impedance.
One embodiment of the invention provide a kind of energy storage component, comprising: a positive pole is mixed with a polyacrylate (polyacrylate) water-based sticker; One negative pole; And electrolyte.
This positive pole is by LiCoO
2, LiMn
2O
4, LiFePO
4, LiNi
1/3Co
1/3Mn
1/3O
2, LiNiCoO
2Or other lithium metal oxide constitutes.This polyacrylate water-based sticker has following chemical formula (I):
Wherein X is the alkyl of carbon number 1～6, and n is 500～2,500, and X more comprises acrylate.The weight average molecular weight of this polyacrylate water-based sticker is between 10,000～200, and 000.The percentage by weight of this polyacrylate water-based sticker in this positive pole is between 1～10%.
One embodiment of the invention, this positive pole more comprise and are mixed with a polyacrylonitrile (polyacrylonitrile) water-based sticker.This polyacrylonitrile water-based sticker has following chemical formula (II):
Wherein n is 500～3,500.The weight average molecular weight of this polyacrylonitrile water-based sticker is between 20,000～150, and 000.The part by weight of this polyacrylate water-based sticker and this polyacrylonitrile water-based sticker was between 1: 9～5: 5.Preferably, the ratio of this polyacrylate water-based sticker and this polyacrylonitrile water-based sticker is 3: 7.The percentage by weight of mixture in this positive pole of this polyacrylate water-based sticker and this polyacrylonitrile water-based sticker is between 1～10%.
The water-based sticker that the present invention makes by mixing special ratios polyacrylate and polyacrylonitrile can effectively improve general water-based sticker and cause the not good problem of anode material of lithium battery adhesive force, and, also can significantly reduce the pole plate resistance value because the polarity problems between material particle and sticker is improved.In addition, the mixed type watersoluble sticker that the present invention adds can effectively be kept battery capacity in about 140mAh/g, and under the test of 0.2C/0.2C cycle life, battery efficiency also uses general water-based sticker person to be height, has splendid battery behavior.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is for using variety classes mixed type watersoluble sticker in the adhesive force of positive electrode structure and the test result of surperficial resistance.
Fig. 2 is for using variety classes mixed type watersoluble sticker discharge curve under the different discharge rates in battery component.
Fig. 3 is for using variety classes mixed type watersoluble sticker capacitance under the cycle-index in battery component.
Embodiment
One embodiment of the invention provide a kind of energy storage component, comprise a positive pole, are mixed with a polyacrylate water-based sticker, a negative pole, and electrolyte.
The positive pole of energy storage component can be by LiCoO
2, LiMn
2O
4, LiFePO
4, LiNi
1/3Co
1/3Mn
1/3O
2, LiNiCoO
2Or other lithium metal oxide constitutes.Above-mentioned polyacrylate water-based sticker has following chemical formula (I):
In the chemical formula (I), X can be the alkyl of carbon number 1～6, and n can be 500～2, and 500.In one embodiment of the invention, X can more comprise acrylate.The weight average molecular weight of above-mentioned polyacrylate water-based sticker is between 10,000～200, and 000.In positive electrode, the percentage by weight of polyacrylate water-based sticker is between 1～10%.
In one embodiment of the invention, positive pole can more comprise and is mixed with a polyacrylonitrile water-based sticker.This polyacrylonitrile water-based sticker has following chemical formula (II):
In the chemical formula (II), n can be 500～3, and 500.The weight average molecular weight of above-mentioned polyacrylonitrile water-based sticker is between 20,000～150, and 000.
The part by weight of above-mentioned polyacrylate water-based sticker and polyacrylonitrile water-based sticker was between 1: 9～5: 5.Preferably, the mixture weight ratio of this polyacrylate water-based sticker and this polyacrylonitrile water-based sticker is 3: 7.In positive electrode, the percentage by weight of polyacrylate water-based sticker and polyacrylonitrile water-based sticker is between 1～10%.
The present invention mixes sticker and can effectively improve general water-based sticker and cause the not good problem of anode material of lithium battery adhesive force by mixing the special ratios polyacrylate with the water-based that polyacrylonitrile makes, and, also can significantly reduce the pole plate resistance because the polarity problems between material particle and sticker is improved.In addition, the mixed type watersoluble sticker that the present invention adds can effectively be kept battery capacity in about 140mAh/g, and under the test of 0.2C/0.2C cycle life, battery efficiency also uses general water-based sticker person to be height, has splendid battery behavior.
[embodiment 1] contains the preparation of the positive electrode structure of polyacrylonitrile water-based sticker
At first, with the LiCoO of 91 weight portions
2, the polyacrylonitrile (n=1,300) of 6 weight portions and the acetylene black (conducting powder) of 4 weight portions is scattered in the N-N-methyl 2-pyrrolidone N-(NMP), to form a slurry.Afterwards, the coating slurry is in an aluminium foil.After to be dried, compress and cut out to be prepared into a positive pole.
Propene carbonate (the propylene carbonate that mixes 2 parts by volume, abbreviation PC), ethylene carbonate (the ethylene carbonate of 3 parts by volume, be called for short EC) and the diethyl carbonate (diethylcarbonate, vehicle economy C) of 5 parts by volume as the organic solvent of electrolyte solution.The lithium salts of this solution is LiPF
6, concentration is 1M.Then, anode and lithium negative electrode are separated, and the holding area between anode and negative electrode adds above-mentioned electrolyte solution with a polypropylene barrier film (PP).After to be packaged, carry out electro-chemical test.
[embodiment 2] contain the preparation of styrene butadiene rubbers (SBR) and the positive electrode structure of polyacrylonitrile water-based sticker
At first, with the LiCoO of 91 weight portions
2, 6 weight portions styrene butadiene rubbers and polyacrylonitrile (n=1,300) mixture (styrene butadiene rubbers: the weight ratio of polyacrylonitrile=3: 7) and the acetylene black of 4 weight portions (conducting powder) be scattered in the N-N-methyl 2-pyrrolidone N-(NMP), to form a slurry.Afterwards, the coating slurry is in an aluminium foil.After to be dried, compress and cut out to be prepared into a positive pole.
Mix the organic solvent of the diethyl carbonate (DEC) of the ethylene carbonate (EC) of propene carbonate (PC), 3 parts by volume of 2 parts by volume and 5 parts by volume as electrolyte solution.The lithium salts of this solution is LiPF
6, concentration is 1M.Then, anode and lithium negative electrode are separated, and the holding area between anode and negative electrode adds above-mentioned electrolyte solution with a polypropylene barrier film (PP).After to be packaged, carry out electro-chemical test.
[embodiment 3] contain the preparation of polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker
At first, with the LiCoO of 91 weight portions
2, 6 weight portions polyacrylate (X is a butyl, n=1,500) with polyacrylonitrile (n=1,300) mixture (butyl polyacrylate: the weight ratio of polyacrylonitrile=3: 7) and the acetylene black of 4 weight portions (conducting powder) be scattered in the N-N-methyl 2-pyrrolidone N-(NMP), to form a slurry.Afterwards, the coating slurry is in an aluminium foil.After to be dried, compress and cut out to be prepared into a positive pole.
Mix the organic solvent of the diethyl carbonate (DEC) of the ethylene carbonate (EC) of propene carbonate (PC), 3 parts by volume of 2 parts by volume and 5 parts by volume as electrolyte solution.The lithium salts of this solution is LiPF
6, concentration is 1M.Then, anode and lithium negative electrode are separated, and the holding area between anode and negative electrode adds above-mentioned electrolyte solution with a polypropylene barrier film (PP).After to be packaged, carry out electro-chemical test.
[embodiment 4] contain the preparation of polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker
At first, with the LiCoO of 91 weight portions
2, 6 weight portions polyacrylate (X is a butyl, n=1,500) with polyacrylonitrile (n=1,300) mixture (butyl polyacrylate: the weight ratio of polyacrylonitrile=1: 9) and the acetylene black of 4 weight portions (conducting powder) be scattered in the N-N-methyl 2-pyrrolidone N-, to form a slurry.Afterwards, the coating slurry is in an aluminium foil.After to be dried, compress and cut out to be prepared into a positive pole.
Mix the organic solvent of the diethyl carbonate (DEC) of the ethylene carbonate (EC) of propene carbonate (PC), 3 parts by volume of 2 parts by volume and 5 parts by volume as electrolyte solution.The lithium salts of this solution is LiPF
6, concentration is 1M.Then, anode and lithium negative electrode are separated, and the holding area between anode and negative electrode adds above-mentioned electrolyte solution with a polypropylene barrier film (PP).After to be packaged, carry out electro-chemical test.
[embodiment 5] contain the preparation of polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker
At first, with the LiCoO of 91 weight portions
2, 6 weight portions polyacrylate (X is a butyl, n=1,500) with polyacrylonitrile (n=1,300) mixture (butyl polyacrylate: the weight ratio of polyacrylonitrile=5: 5) and the acetylene black of 4 weight portions (conducting powder) be scattered in the N-N-methyl 2-pyrrolidone N-, to form a slurry.Afterwards, the coating slurry is in an aluminium foil.After to be dried, compress and cut out to be prepared into a positive pole.
Mix the organic solvent of the diethyl carbonate (DEC) of the ethylene carbonate (EC) of propene carbonate (PC), 3 parts by volume of 2 parts by volume and 5 parts by volume as electrolyte solution.The lithium salts of this solution is LiPF
6, concentration is 1M.Then, anode and lithium negative electrode are separated, and the holding area between anode and negative electrode adds above-mentioned electrolyte solution with a polypropylene barrier film (PP).After to be packaged, carry out electro-chemical test.
The test of positive electrode structure adhesive force of [embodiment 6] the present invention (adhesion strength) and surperficial resistance (surfaceresistance)
Fig. 1 is the adhesive force of the positive electrode structure of use variety classes water-based sticker and the test result of surperficial resistance, wherein (a) is for containing the positive electrode structure of polyacrylonitrile water-based sticker, (b) for containing the positive electrode structure (weight ratio 3: 7) of SBR and polyacrylonitrile water-based sticker, (c) for containing the positive electrode structure (weight ratio 3: 7) of polyacrylate and polyacrylonitrile water-based sticker, (d) for containing the positive electrode structure (weight ratio 1: 9) of polyacrylate and polyacrylonitrile water-based sticker, (e) for containing the positive electrode structure (weight ratio 5: 5) of polyacrylate and polyacrylonitrile water-based sticker.By can finding out among the figure, the present invention contains polyacrylate water-based sticker or contains polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker all shows preferable adhesive force and low surperficial resistance in the positive electrode structure of (a)～(e).
The test of [embodiment 7] energy storage component discharge curve of the present invention
A. battery capacity
The battery of embodiment 1,4 preparations is carried out charge/discharge test with fixed current/voltage.
At first, with 0.6mA/cm
2Fixed current with battery charge to 4.2V, be less than or equal to 0.06mA up to electric current.Then, with 0.6mA/cm
2Fixed current with battery discharge to cut-ff voltage (2.75V).Afterwards, with 3mA/cm
2Fixed current with battery charge to 4.2V, be less than or equal to 0.3mA up to electric current.Then, with 3mA/cm
2Fixed current with battery discharge to cut-ff voltage (2.75V).Afterwards, with 9mA/cm
2Fixed current with battery charge to 4.2V, be less than or equal to 0.9mA up to electric current.Then, with 9mA/cm
2Fixed current with battery discharge to cut-ff voltage (2.75V).
Fig. 2 is for using variety classes mixed type watersoluble sticker discharge curve under the different discharge rates in battery component, wherein (a) for containing the energy storage component of the positive electrode structure of polyacrylonitrile water-based sticker, (d) mixes the just energy storage component of electrode structure of water-based sticker (3: 7) for what contain polyacrylate and polyacrylonitrile.By finding out among the figure, the more known energy storage component that contains the positive electrode structure of polyacrylonitrile water-based sticker of energy storage component that the present invention contains polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker shows preferable battery efficiency and (for example depresses in same electrical, has big capacitance), and with the increase of discharge rate, the difference of inter-module battery efficiency is more for remarkable.
The test of [embodiment 8] energy storage component cyclical stability of the present invention (cycling stability)
B. charge test
The battery of embodiment 1,4 preparations is carried out charge/discharge test with fixed current/voltage.
At first, with 0.6mA/cm
2Fixed current with battery charge to 4.2V, be less than or equal to 0.061mA up to electric current.Then, with 0.6mA/cm
2Fixed current with battery discharge to cut-ff voltage (2.75V).Repeat said process 30 times.
Fig. 3 is for using variety classes mixed type watersoluble sticker capacitance under the cycle-index (cyclenumber) in battery component, wherein (a) for containing the energy storage component of the positive electrode structure of polyacrylonitrile water-based sticker, (d) mixes the just energy storage component of electrode structure of water-based sticker (weight ratio 3: 7) for what contain polyacrylate and polyacrylonitrile.By finding out among the figure, the present invention contains the energy storage component of polyacrylate and the positive electrode structure of polyacrylonitrile water-based sticker after going through different cycle-indexes, the more known energy storage component that contains the positive electrode structure of polyacrylonitrile water-based sticker can be kept big capacitance, and this represents that promptly energy storage component of the present invention has preferable reliability.
Though the present invention with preferred embodiment openly as above; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing to change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (4)
1. energy storage component comprises:
One positive pole only is mixed with a polyacrylate water-based sticker and a polyacrylonitrile water-based sticker;
One negative pole; And
Electrolyte;
Wherein, described polyacrylate water-based sticker has following chemical formula (I):
Wherein X is the alkyl of carbon number 1～6, and n is 500～2,500;
Described polyacrylonitrile water-based sticker has following chemical formula (II):
Wherein n is 500～3,500;
The part by weight of described polyacrylate water-based sticker and described polyacrylonitrile water-based sticker is 3:7, and described polyacrylate water-based sticker and the percentage by weight of described polyacrylonitrile water-based sticker in this positive pole are between 1～10%.
2. energy storage component according to claim 1, wherein said positive pole is by LiCoO
2, LiMn
2O
4, LiFePO
4, LiNi
1/3Co
1/3Mn
1/3O
2, LiNiCoO
2Or the lithium metal oxide of other kind constitutes.
3. energy storage component according to claim 1, the weight average molecular weight of wherein said polyacrylate water-based sticker be between 10,000～200, and 000.
4. energy storage component according to claim 1, the weight average molecular weight of wherein said polyacrylonitrile water-based sticker be between 20,000～150, and 000.
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|---|---|---|---|
| CN2008101894294A CN101764266B (en) | 2008-12-24 | 2008-12-24 | Energy storing assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101894294A CN101764266B (en) | 2008-12-24 | 2008-12-24 | Energy storing assembly |
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| CN101764266B true CN101764266B (en) | 2013-07-24 |
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| CN102593424A (en) * | 2012-03-05 | 2012-07-18 | 中南大学 | Method for preparing anode of lithium ion battery |
| CN113234403B (en) * | 2021-05-08 | 2022-08-09 | 苏州清陶新能源科技有限公司 | Adhesive, preparation method and application thereof |
| CN114242938A (en) * | 2021-12-20 | 2022-03-25 | 湖北亿纬动力有限公司 | Positive pole piece of ion battery and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212053A (en) * | 2006-12-31 | 2008-07-02 | 上海比亚迪有限公司 | Positive pole of Li-ion battery and the Li-ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212053A (en) * | 2006-12-31 | 2008-07-02 | 上海比亚迪有限公司 | Positive pole of Li-ion battery and the Li-ion battery |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-246029A 2002.08.30 |
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