CN101685853A - Lithium ion battery preparation method - Google Patents
Lithium ion battery preparation method Download PDFInfo
- Publication number
- CN101685853A CN101685853A CN200810216528A CN200810216528A CN101685853A CN 101685853 A CN101685853 A CN 101685853A CN 200810216528 A CN200810216528 A CN 200810216528A CN 200810216528 A CN200810216528 A CN 200810216528A CN 101685853 A CN101685853 A CN 101685853A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- preparation
- weak acid
- current collector
- 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.)
- Pending
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 20
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 239000011889 copper foil Substances 0.000 claims description 23
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 238000010129 solution processing Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000010405 anode material Substances 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052596 spinel Inorganic materials 0.000 description 2
- 239000011029 spinel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000007719 peel strength test Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The invention discloses a lithium ion battery preparation method. The method includes that cathode size is coated on cathode current collector and the surface of current collector is treated by weak acid before coating cathode size on the cathode current collector. The method of the invention can improve surface density and adhesive force of lithium titanate after coating, thus effectively improving electrochemical performances of battery taking lithium titanate as cathode such as capacity, cycle performance and the like.
Description
Technical field
The present invention relates to technical field of lithium ion, particularly relate to a kind of preparation method of lithium ion battery that can improve lithium titanate anode material adhesive force on the Copper Foil collector.
Background technology
No matter be that LiMn2O4 or LiFePO 4 have had the history of several years even ten several years as the lithium ion secondary power battery anode material, lithium ion secondary electrokinetic cell manufacturer as representative has Moli company (with LiMn2O4 as positive electrode) in the world, Valence and A123 (with the ferrous lithium of ferric phosphate as positive electrode).Above-mentioned lithium ion secondary electrokinetic cell all is the hosts that adopt graphite to insert in charging process as lithium ion.Because graphite is inserting Li
+The LiC that the back forms
6Structure has with respect to Li
+Therefore/Li can form the battery than high open circuit voltage than electronegative potential (about about 0.5V) when relative with above-mentioned positive electrode.Yet problem derives from LiC equally
6The electronegative potential of structure promptly under negative pole graphite deficiency or positive electrode overcharge conditions, forms Li dendrite thereby Li will be deposited on the negative pole graphite surface with the form of metal, penetrates barrier film and causes internal short-circuit of battery and cause safety problem.Spinel type lithium titanate has with respect to Li as lithium ion battery negative material
+The current potential that/Li is higher, the problem that does not exist lithium metal to separate out in charge and discharge process can improve the security performance of battery greatly; Spinel type lithium titanate still is a kind of zero strain material simultaneously, thereby has excellent cycle performance.
The lithium ion battery that with the lithium titanate is negative material is because its good cycle, and advantages such as safety can be widely used in electric tool, HEV, and fields such as EV are one of present research focuses.But because the lithium titanate anode material granularity is less, specific area is bigger, and is relatively poor with the bond effect of Copper Foil collector when adopting PVDF oiliness system, therefore had a strong impact on the chemical property of battery.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of preparation method of lithium ion battery that can improve lithium titanate anode material adhesive force on the Copper Foil collector is provided.
For achieving the above object, the present invention has adopted following technical scheme:
The invention discloses a kind of preparation method of lithium ion battery, described method is included in and is coated with cathode size on the negative current collector, and, before coating cathode size on the negative current collector, handle collection liquid surface with weak acid.
Preferably, described negative current collector is a Copper Foil.
Perhaps preferred, described cathode size is meant lithium titanate cathode size.
Further preferred starving, the mass percent concentration of used weak acid is 0.1%～0.5%.
In the concrete execution mode of the present invention, handle collection liquid surface with weak acid and be meant with the nmp solution processing collection liquid surface that contains weak acid.
Described weak acid is preferably and contains carboxylate radical weak acid, more preferably oxalic acid, citric acid, formic acid or acetate.
Owing to adopted above technical scheme, the beneficial effect that the present invention is possessed is:
The present invention is by adopting the weak acid of variable concentrations and proportioning, particularly handle the Copper Foil collection liquid surface with the nmp solution of weak acid, can improve the adhesive force of lithium titanate material system and copper foil surface, effectively improving the surface density and the adhesive force of the lithium titanate after the coating, is chemical properties such as the capacity of battery of negative pole and cycle performance thereby can effectively improve with the lithium titanate.
Embodiment
Preparation method at lithium ion battery of the present invention, adopt the nmp solution that contains carboxylate radical weak acid (for example oxalic acid, citric acid, formic acid, acetate etc.) of variable concentrations and proportioning to handle the Copper Foil collection liquid surface, can fall the greasy dirt of copper foil surface, reduce the surface tension of Copper Foil, the lithium titanate slurry can be sprawled fully at copper foil surface come, thus the adhesive force of raising lithium titanate material system and copper foil surface.The present invention selects for use the weak acid that contains carboxylate radical that two reasons are arranged: the one, the acidity of common carboxylic acid a little less than, when selecting, has more selection, the 2nd, introduce electrodeless ion when adopting inorganic acid and influence the performance of electric core, adopting NMP mainly is to consider that the oiliness system of using when applying with negative pole is corresponding as solvent, if and adopt the aqueous solution to handle, PVDF is easy to generate reunion running into residual moisture.
By specific embodiment the present invention is done further detailed description down.
Embodiment
1. be respectively the surface of six kinds of oxalic acid nmp solutions wiping of A (0.1%) B (0.15%) C (0.2%) D (0.3%) E (0.4%) F (0.5%) with mass percent concentration with a kind of Copper Foil.
2. after Copper Foil being handled the identical time (10 seconds) with the nmp solution wiping of A, B, C, D, E, six kinds of oxalic acid of F, copper foil surface is dried, the Copper Foil that will handle dries up or dries then.
3. six kinds of Copper Foils of handling are coated with identical faces density (20.0mg/cm according to normal coating process
2) same recipe (lithium titanate: lithium titanate cathode size Super P: PVDF: NMP=91: 2: 7: 100).
4. the Copper Foil that coating in the above-mentioned steps 3 is finished is at identical compacted density (1.7g/cm
3) under be rolled into pole piece.
5. be 1.7g/cm with compacted density in the above-mentioned steps 4
3The lithium titanate anode sheet is drawn the grid that lattice are 25 lattice 2mm*2mm with pocket knife.
6. get the 3M hinge, gummed paper is adhered to draw on the good grid of lattice, and compress to discharge the air of the inside.
7. hold one side of gummed paper and spend angles, the gummed paper of tearing fast into about 150 with desktop.
8. to gesticulating the attached material situation of lithium titanate anode sheet in the lattice district.
9. the attached paper tinsel effect comparison of treated Copper Foil and undressed Copper Foil (undressed Copper Foil adopts above step 3～8 same procedure to prepare pole piece).
Result's demonstration, untreated Copper Foil have after coating slightly falls to expect phenomenon, come off from collector through material after the roll-in, and treated Copper Foil coating back nothing does not fall to expect phenomenon that peel strength is higher, also can not come off from collector after the roll-in.
Following table detects data after having listed the coating of above embodiment and Comparative Examples.
Each Comparative Examples of table 1 and embodiment apply different surface density peel strength contrasts
| Embodiment | Concentration of treatment | Coated side density mg/cm 2 | Peel strength test after the roll-in |
| Comparative Examples 1 | Be untreated | ??10 | There is not the material of falling, peel strength 0.10N |
| Comparative Examples 2 | Be untreated | ??15 | Slightly fall material |
| Comparative Examples 3 | Be untreated | ??20 | Seriously fall material |
| Embodiment 1 | ??0.1％ | ??20 | There is not the material of falling, peel strength 0.10N |
| Embodiment 2 | ??0.15％ | ??20 | There is not the material of falling, peel strength 0.20N |
| Embodiment 3 | ??0.2％ | ??20 | There is not the material of falling, peel strength 0.25N |
| Embodiment 4 | ??0.3％ | ??20 | There is not the material of falling, peel strength 0.30N |
| Embodiment 5 | ??0.4％ | ??20 | There is not the material of falling, peel strength 0.30N |
| Embodiment 6 | ??0.5％ | ??20 | There is not the material of falling, peel strength 0.30N |
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. preparation method of lithium ion battery, described method is included in and is coated with cathode size on the negative current collector, it is characterized in that: before coating cathode size on the negative current collector, handle collection liquid surface with weak acid.
2, a kind of preparation method of lithium ion battery according to claim 1 is characterized in that: described negative current collector is a Copper Foil.
3, a kind of preparation method of lithium ion battery according to claim 1, it is characterized in that: described cathode size is meant lithium titanate cathode size.
4, according to any described a kind of preparation method of lithium ion battery of claim 1～3, it is characterized in that: handle collection liquid surface with weak acid and be meant with the nmp solution processing collection liquid surface that contains weak acid.
5, a kind of preparation method of lithium ion battery according to claim 4 is characterized in that: the mass percent concentration of used weak acid is 0.1%～0.5%.
6, a kind of preparation method of lithium ion battery according to claim 4 is characterized in that: described weak acid is for containing carboxylate radical weak acid.
7, a kind of preparation method of lithium ion battery according to claim 6 is characterized in that: described weak acid is oxalic acid, citric acid, formic acid or acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810216528A CN101685853A (en) | 2008-09-23 | 2008-09-23 | Lithium ion battery preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810216528A CN101685853A (en) | 2008-09-23 | 2008-09-23 | Lithium ion battery preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101685853A true CN101685853A (en) | 2010-03-31 |
Family
ID=42048899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810216528A Pending CN101685853A (en) | 2008-09-23 | 2008-09-23 | Lithium ion battery preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101685853A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303008A (en) * | 2011-08-01 | 2012-01-04 | 珠海锂源动力科技有限公司 | Coating process and device of lithium titanate material of lithium ion battery |
| WO2012110194A1 (en) * | 2011-02-14 | 2012-08-23 | Li-Tec Battery Gmbh | Method for producing electrodes |
| WO2012110196A3 (en) * | 2011-02-14 | 2012-10-11 | Li-Tec Battery Gmbh | Process for producing electrodes |
| CN102945946A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Lithium titanate battery negative pole piece manufacturing method |
| CN103403923A (en) * | 2011-02-14 | 2013-11-20 | 锂电池科技有限公司 | Method for producing electrodes |
| CN103682256A (en) * | 2013-12-27 | 2014-03-26 | 山东精工电子科技有限公司 | Coating method for lithium titanate battery cathode piece |
| CN105470456A (en) * | 2014-10-13 | 2016-04-06 | 万向A一二三系统有限公司 | Lithium titanate negative electrode plate and preparation method thereof |
| CN109494349A (en) * | 2018-10-17 | 2019-03-19 | 宁德时代新能源科技股份有限公司 | Negative pole piece and secondary battery |
| CN112563455A (en) * | 2020-12-25 | 2021-03-26 | 东莞维科电池有限公司 | Preparation method of pole piece, pole piece and lithium ion battery |
| DE102022205629B3 (en) | 2022-06-01 | 2023-12-07 | Volkswagen Aktiengesellschaft | Method for producing an anode for a lithium-ion battery cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780036A (en) * | 2004-11-25 | 2006-05-31 | 韩国电子通信研究院 | Anode for lithium metal polymer secondary battery and method of preparing the same |
| JP2006202635A (en) * | 2005-01-21 | 2006-08-03 | Furukawa Circuit Foil Kk | Copper foil for lithium secondary battery electrode, manufacturing method of copper foil, electrode for lithium secondary battery using copper foil, and lithium secondary battery |
| CN101154720A (en) * | 2006-09-29 | 2008-04-02 | 深圳市比克电池有限公司 | Cathode slurry of lithium battery, its producing method and lithium battery |
| CN101310350A (en) * | 2005-11-14 | 2008-11-19 | 富士重工业株式会社 | Lithium ion capacitor |
-
2008
- 2008-09-23 CN CN200810216528A patent/CN101685853A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780036A (en) * | 2004-11-25 | 2006-05-31 | 韩国电子通信研究院 | Anode for lithium metal polymer secondary battery and method of preparing the same |
| JP2006202635A (en) * | 2005-01-21 | 2006-08-03 | Furukawa Circuit Foil Kk | Copper foil for lithium secondary battery electrode, manufacturing method of copper foil, electrode for lithium secondary battery using copper foil, and lithium secondary battery |
| CN101310350A (en) * | 2005-11-14 | 2008-11-19 | 富士重工业株式会社 | Lithium ion capacitor |
| CN101154720A (en) * | 2006-09-29 | 2008-04-02 | 深圳市比克电池有限公司 | Cathode slurry of lithium battery, its producing method and lithium battery |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103403923A (en) * | 2011-02-14 | 2013-11-20 | 锂电池科技有限公司 | Method for producing electrodes |
| WO2012110194A1 (en) * | 2011-02-14 | 2012-08-23 | Li-Tec Battery Gmbh | Method for producing electrodes |
| WO2012110196A3 (en) * | 2011-02-14 | 2012-10-11 | Li-Tec Battery Gmbh | Process for producing electrodes |
| CN103370826A (en) * | 2011-02-14 | 2013-10-23 | 锂电池科技有限公司 | Process for producing electrodes |
| CN103384930A (en) * | 2011-02-14 | 2013-11-06 | 锂电池科技有限公司 | Method for producing electrodes |
| CN102303008A (en) * | 2011-08-01 | 2012-01-04 | 珠海锂源动力科技有限公司 | Coating process and device of lithium titanate material of lithium ion battery |
| CN102945946A (en) * | 2012-11-16 | 2013-02-27 | 双登集团股份有限公司 | Lithium titanate battery negative pole piece manufacturing method |
| CN103682256A (en) * | 2013-12-27 | 2014-03-26 | 山东精工电子科技有限公司 | Coating method for lithium titanate battery cathode piece |
| CN105470456A (en) * | 2014-10-13 | 2016-04-06 | 万向A一二三系统有限公司 | Lithium titanate negative electrode plate and preparation method thereof |
| CN105470456B (en) * | 2014-10-13 | 2018-05-18 | 万向一二三股份公司 | A kind of lithium titanate anode pole piece and preparation method thereof |
| CN109494349A (en) * | 2018-10-17 | 2019-03-19 | 宁德时代新能源科技股份有限公司 | Negative pole piece and secondary battery |
| US11114659B2 (en) | 2018-10-17 | 2021-09-07 | Contemporary Amperex Technology Co., Limited | Negative electrode sheet and secondary battery |
| CN112563455A (en) * | 2020-12-25 | 2021-03-26 | 东莞维科电池有限公司 | Preparation method of pole piece, pole piece and lithium ion battery |
| DE102022205629B3 (en) | 2022-06-01 | 2023-12-07 | Volkswagen Aktiengesellschaft | Method for producing an anode for a lithium-ion battery cell |
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Application publication date: 20100331 |