CN1780034A - Production of uniform sizing material for lithium ion cell electrode - Google Patents
Production of uniform sizing material for lithium ion cell electrode Download PDFInfo
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- CN1780034A CN1780034A CNA2004100728513A CN200410072851A CN1780034A CN 1780034 A CN1780034 A CN 1780034A CN A2004100728513 A CNA2004100728513 A CN A2004100728513A CN 200410072851 A CN200410072851 A CN 200410072851A CN 1780034 A CN1780034 A CN 1780034A
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- lithium ion
- colloid
- ion cell
- cell electrode
- sizing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
A uniform slurry used for the electrodes of Li ion battery is prepared through preparing colloid proportionally from adhesive and solvent, proportionally mixing part of it with active material and electro-conductive additive, stirring at 5-60 rpm for 0.3-1 hr, adding the rest of colloid, and stirring at 300-1500 rpm for 0.8-1.5 hr.
Description
Technical field
The invention belongs to the lithium ion battery technical field of material, particularly relate to a kind of preparation method of uniform sizing material for lithium ion cell electrode.
Background technology
Present disclosed lithium ion battery positive and negative electrode slurry preparation method is that powder, glue and the solvent that electrode preparation is required once all joins refiner, because physical characteristics such as various storeroom proportions and specific surface differ greatly, even in advance with mixing the powder machine with the powder premix, also be difficult to evenly the slurry preparation, and additive and colloid consumption are big, and the electrode material after the processing comes off easily, causes the battery performance produced poor.
Summary of the invention
The present invention is for solving problems of the prior art, provides that a kind of additive and colloid consumption are little, the electrode material after the processing is not easy to come off, and can improves the preparation method of a kind of uniform sizing material for lithium ion cell electrode of battery capacity.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of preparation method of uniform sizing material for lithium ion cell electrode is characterized in adopting the following step:
The adhesive and the solvent that 1. will contain adhesive weight ratio 5-20% are mixed with colloid;
2. taking by weighing weight ratio is 4-50: 1: the active material of 3-20, conductive additive and described colloid, with the whole active materials, the conductive additive that take by weighing with take by weighing 1/5 to 1/3 of described colloid and together put into refiner, stirred 0.3-1 hour with 5-60 rev/min speed, make described colloid, conductive additive and active material be mixed into the dough shape;
3. in described dough shape composite material, add remaining whole colloid again, stirred 0.8-1.5 hour, promptly obtain uniform sizing material for lithium ion cell electrode with 300-1500 rev/min speed.
The present invention can also adopt following technical measures to realize:
The preparation method of uniform sizing material for lithium ion cell electrode is characterized in: described adhesive is Kynoar or water.
The preparation method of uniform sizing material for lithium ion cell electrode is characterized in: described solvent is the N-methyl pyrrolidone.
The preparation method of uniform sizing material for lithium ion cell electrode is characterized in: described whole active materials, the conductive additive that takes by weighing and take by weighing 1/5 to 1/3 of described colloid and together put into refiner, stirred 0.5 hour with 5-60 rev/min speed.
The preparation method of uniform sizing material for lithium ion cell electrode is characterized in: in described dough shape composite material, add remaining whole colloid again, stirred 1 hour with 1000 rev/mins speed.
Advantage and good effect that the present invention has are: by paste mixture is carried out stirring at low speed, make it become the dough shape, its process can make conductive additive fully be disperseed through rubbing compound movements such as pressure, whipping, eliminate newspaper group's state, save additive amount, also therefore reduce the colloid consumption, utilize this two-part surplus to increase the percentage by weight of active material, and then improve battery capacity.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, enumerate following examples now, be described in detail as follows:
Embodiment 1:
Take by weighing out the LiCoO of 5kg
2As positive electrode active materials, the KS-15 of 0.1kg is as additive, and PVDF content is that the mixture 1.97kg of 8% PVDF and NMP is as colloid; With 5kg LiCoO
2, 0.1kgKS-15 and 0.5kg colloid insert refiner, stirred 30 minutes with 10 rev/mins speed, slurry is the dough shape; Add residue 1.47kg colloid again, stirred 60 minutes, promptly obtain the lithium ion cell positive uniform sizing material with 1000 rev/mins speed.
Embodiment 2:
The MCMB that takes by weighing out 3kg is as negative active core-shell material, and the SS of 0.07kg is as additive, and PVDF content is that the mixture 2.67kg of 10% PVDF and NMP is as colloid; 3kg MCMB, 0.07kg SS and 0.65kg colloid are inserted refiner, stirred 40 minutes with 8 rev/mins speed, slurry is the dough shape; Add residue 2.02kg colloid again, stirred 60 minutes, promptly obtain the used as negative electrode of Li-ion battery uniform sizing material with 1000 rev/mins speed.
For further specifying advantage of the present invention, be prepared as example with anode sizing agent, and assembling AA type lithium ion battery, provided the performance index table of comparisons of using the prior art slurry and going out battery with pulp preparation of the present invention:
| Technical indicator | Prior art | The present invention |
| Glue content/solvent | 5％ | 3％ |
| Additive level | 6％ | 2％ |
| Battery capacity | 600mAh | 680mAh |
Claims (5)
1. the preparation method of a uniform sizing material for lithium ion cell electrode is characterized in that: adopt the following step:
The adhesive and the solvent that 1. will contain adhesive weight ratio 5-20% are mixed with colloid;
2. taking by weighing weight ratio is 4-50: 1: the active material of 3-20, conductive additive and described colloid,
With the whole active materials, the conductive additive that take by weighing with take by weighing 1/5 to 1/3 of described colloid and together put into refiner, stirred 0.3-1 hour with 5-60 rev/min speed, make described colloid, conductive additive and active material be mixed into the dough shape;
3. in described dough shape composite material, add remaining whole colloid again, stirred 0.8-1.5 hour, promptly obtain uniform sizing material for lithium ion cell electrode with 300-1500 rev/min speed.
2. the preparation method of uniform sizing material for lithium ion cell electrode according to claim 1, it is characterized in that: described adhesive is Kynoar or water.
3. the preparation method of uniform sizing material for lithium ion cell electrode according to claim 1, it is characterized in that: described solvent is the N-methyl pyrrolidone.
4. the preparation method of uniform sizing material for lithium ion cell electrode according to claim 1, it is characterized in that: described whole active materials, the conductive additive that takes by weighing and take by weighing 1/5 to 1/3 of described colloid and together put into refiner, stirred 0.5 hour with 5-60 rev/min speed.
5. the preparation method of uniform sizing material for lithium ion cell electrode according to claim 1 is characterized in that: in described dough shape composite material, add remaining whole colloid again, stirred 1 hour with 1000 rev/mins speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100728513A CN1780034A (en) | 2004-11-22 | 2004-11-22 | Production of uniform sizing material for lithium ion cell electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100728513A CN1780034A (en) | 2004-11-22 | 2004-11-22 | Production of uniform sizing material for lithium ion cell electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1780034A true CN1780034A (en) | 2006-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100728513A Pending CN1780034A (en) | 2004-11-22 | 2004-11-22 | Production of uniform sizing material for lithium ion cell electrode |
Country Status (1)
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| CN (1) | CN1780034A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102683644A (en) * | 2012-05-23 | 2012-09-19 | 东莞新能源科技有限公司 | Preparation method of anode slurry of lithium ion battery |
| CN101393978B (en) * | 2007-09-19 | 2012-11-28 | 深圳市比克电池有限公司 | Pulp for lithium ionic cell electrode and manufacturing method thereof |
| CN103022420A (en) * | 2011-09-27 | 2013-04-03 | 力神迈尔斯动力电池系统有限公司 | Slurry homogenizing method for positive electrode of lithium-ion power battery |
| CN103346318A (en) * | 2013-07-01 | 2013-10-09 | 彩虹集团公司 | Li-ion positive electrode slurry and preparation method thereof |
| CN103985837A (en) * | 2014-05-30 | 2014-08-13 | 合肥国轩高科动力能源股份公司 | Preparation technology for lithium ion battery electrode slurry |
| CN106299249A (en) * | 2016-08-21 | 2017-01-04 | 合肥国轩高科动力能源有限公司 | Method for inhibiting high-nickel ternary material slurry mixing gel and improving slurry stability |
| TWI622213B (en) * | 2017-04-13 | 2018-04-21 | 鴻海精密工業股份有限公司 | Preparation method of lithium ion battery anode slurry |
| TWI624107B (en) * | 2017-04-26 | 2018-05-11 | Method for producing positive and negative plates of graphene in lithium battery | |
| CN108496265A (en) * | 2016-11-17 | 2018-09-04 | 株式会社Lg化学 | The method for being used to prepare positive electrode active materials slurry |
| CN113270570A (en) * | 2021-05-07 | 2021-08-17 | 深圳衍化新能源科技有限公司 | Preparation method of lithium ion battery anode slurry |
-
2004
- 2004-11-22 CN CNA2004100728513A patent/CN1780034A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101393978B (en) * | 2007-09-19 | 2012-11-28 | 深圳市比克电池有限公司 | Pulp for lithium ionic cell electrode and manufacturing method thereof |
| CN103022420A (en) * | 2011-09-27 | 2013-04-03 | 力神迈尔斯动力电池系统有限公司 | Slurry homogenizing method for positive electrode of lithium-ion power battery |
| CN103022420B (en) * | 2011-09-27 | 2015-06-10 | 力神迈尔斯动力电池系统有限公司 | Slurry homogenizing method for positive electrode of lithium-ion power battery |
| CN102683644B (en) * | 2012-05-23 | 2014-11-12 | 东莞新能源科技有限公司 | Preparation method of anode slurry of lithium ion battery |
| CN102683644A (en) * | 2012-05-23 | 2012-09-19 | 东莞新能源科技有限公司 | Preparation method of anode slurry of lithium ion battery |
| CN103346318A (en) * | 2013-07-01 | 2013-10-09 | 彩虹集团公司 | Li-ion positive electrode slurry and preparation method thereof |
| CN103985837A (en) * | 2014-05-30 | 2014-08-13 | 合肥国轩高科动力能源股份公司 | Preparation technology for lithium ion battery electrode slurry |
| CN103985837B (en) * | 2014-05-30 | 2016-06-15 | 合肥国轩高科动力能源有限公司 | Preparation process of lithium ion battery electrode slurry |
| CN106299249A (en) * | 2016-08-21 | 2017-01-04 | 合肥国轩高科动力能源有限公司 | Method for inhibiting high-nickel ternary material slurry mixing gel and improving slurry stability |
| CN106299249B (en) * | 2016-08-21 | 2019-11-01 | 合肥国轩高科动力能源有限公司 | Method for inhibiting high-nickel ternary material slurry mixing gel and improving slurry stability |
| CN108496265A (en) * | 2016-11-17 | 2018-09-04 | 株式会社Lg化学 | The method for being used to prepare positive electrode active materials slurry |
| US10804528B2 (en) | 2016-11-17 | 2020-10-13 | Lg Chem, Ltd. | Method for preparing positive electrode active material slurry |
| TWI622213B (en) * | 2017-04-13 | 2018-04-21 | 鴻海精密工業股份有限公司 | Preparation method of lithium ion battery anode slurry |
| TWI624107B (en) * | 2017-04-26 | 2018-05-11 | Method for producing positive and negative plates of graphene in lithium battery | |
| CN113270570A (en) * | 2021-05-07 | 2021-08-17 | 深圳衍化新能源科技有限公司 | Preparation method of lithium ion battery anode slurry |
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