CN105161675A - Preparation method for lithium titanate negative electrode slurry of lithium battery - Google Patents
Preparation method for lithium titanate negative electrode slurry of lithium battery Download PDFInfo
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- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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Abstract
The invention provides a preparation method for lithium titanate negative electrode slurry of a lithium battery. Through steps of preparing a thickening agent solution, dispersing powder, high viscosity stirring, low viscosity stirring, viscosity testing, vacuum defoaming and the like, components of the slurry are uniformly dispersed within a short time; the prepared slurry is high in uniformity and excellent in stability; and meanwhile, the adhesive power of the prepared battery pole piece is improved, and the consistency and the electrochemical performance of the battery are improved consequently. The preparation method has the advantages of short preparation time, low abrasion on equipment, low production energy consumption, good dispersion effect and the like. The lithium battery prepared from the lithium titanate negative electrode slurry prepared by the preparation method is low in internal resistance, low in possibility of generating heat, high in energy density, good in cycling performance, and long in service life.
Description
Technical field
This patent relates to field of lithium ion battery, is specially a kind of preparation technology and method of lithium titanate anode material slurry.
Background technology
At present continuous deterioration with climatic environment in short supply along with global petroleum resources, human social development is faced with stern challenge.The new-energy automobile of development clean energy-saving is subject to the great attention of countries in the world.The development of new-energy automobile, crucial in its electrical source of power.Lithium ion battery has the advantages such as energy density is large, self discharge is little, memory-less effect, operating voltage range are wide, long service life, non-environmental-pollution, is the main electrical source of power of current new-energy automobile.
Inexpensive with it, the nontoxic and superior chemical property of material with carbon element is widely used in lithium ion battery, and state of interface and the fine structure of itself have a great impact electrode performance.At present, commercial carbon negative electrode material of lithium ion cell can be divided into lithium titanate, hard carbon and soft carbon three class, and wherein graphite type material is still the main flow of lithium ion battery negative material.Graphite-like material with carbon element, having lower lithium embedding/deintercalation current potential, suitable reversible capacity and aboundresources, the advantage such as cheap, is more satisfactory lithium ion battery negative material.But its theoretical specific capacity only has 372mAh/g, thus limit the further raising of lithium ion battery specific energy, the demand of growing high-energy Portable power source can not be met.Meanwhile, when graphite is as negative material, in first charge-discharge process, forms one deck solid electrolyte film (SEI) on its surface, irreversibly consume lithium ion, form irreversible capacity loss.As lithium ion battery negative material, material with carbon element still exists that charge/discharge capacity is low, first cycle irreversible loss is large, solvent molecule intercalation and the shortcoming such as preparation cost is high altogether, and these are also the key issues solved needed in current Study on Li-ion batteries.
Li
4ti
5o
12as a kind of novel ion secondary battery cathode material lithium, compared with other business-like material, advantages such as having good cycle, do not react with electrolyte, security performance is high, charge and discharge platform is steady is one of the most excellent lithium ion battery negative material received much concern in recent years.Compared with carbon negative electrode material, lithium titanate has a lot of advantages, wherein, the deintercalation of lithium ion in lithium titanate is reversible, and lithium ion is embedding or is deviating from the process of lithium titanate, its crystal formation does not change, change in volume is less than 1%, therefore be called as " zero strain material ", can avoid causing structural damage due to the flexible back and forth of electrode material in charge and discharge cycles, thus improve cycle performance and the useful life of electrode, decrease and increase with cycle-index and bring specific capacity significantly to decay, there is the cycle performance more excellent than Carbon anode; But because lithium titanate is a kind of insulating material, its conductivity is low, thus cause the application in lithium electricity to there is the poor problem of high rate performance, lithium titanate material theoretical specific capacity is 175mAh/g simultaneously, and actual specific capacity is greater than 160mAh/g, has the shortcomings such as gram volume is lower.
Lithium ion battery generally comprises positive plate, negative plate, is interval in barrier film between positive plate and negative plate.Anode pole piece comprises plus plate current-collecting body and is coated on the positive pole diaphragm on plus plate current-collecting body, and negative plate comprises negative current collector and is coated on the cathode membrane on negative current collector.Time prepared by electrode plates, first by active material (as cobalt acid lithium, graphite etc.), conductive agent is (as acetylene black, carbon nano-tube, carbon fiber etc.), bonding agent (as Kynoar, PVP, sodium carboxymethylcellulose, SBR emulsion etc.) and solvent (as 1-METHYLPYRROLIDONE, water etc.) make electrode slurry together, again it is coated in collection liquid surface on request, then carry out drying, obtain battery pole piece.
Wherein the performance of performance on lithium ion battery of electrode slurry has important impact.In electrode slurry, each component disperses must be more even, the processing characteristics that pole piece has just had, and electrode distribution of impedance is everywhere even, when discharge and recharge, the effect of active material can play larger, its average gram volume plays and will promote to some extent, thus promotes the performance of full battery.
In practical application, conductive agent thickener soln is carried out high-revolving double planetary dispersion by traditional cathode size preparation method, then add negative electrode active material, after carrying out the stirring of certain hour, then stirring obtains final cathode size through the row short time to add binding agent.First this kind of method need long time treatment to the dispersion of conductive agent, length consuming time and dispersity is unsatisfactory, especially for adopting carbon nano-tube (CNT), Graphene etc. be prepared by the slurry of conductive agent; Secondly traditional handicraft needs in slurry preparation process, keeps vacuumizing state always, cause slurry system internal temperature easily to raise to stirring system, adds recirculated water again simultaneously cool in outside, therefore all very high with wearing and tearing to the requirement of equipment.More than cause that slurry preparation efficiency is low, poor stability, effect are undesirable, all can impact the preparation of follow-up pole piece, the performance of lithium battery.
Summary of the invention
In order to overcome problems of the prior art, especially for the lithium titanate anode material that particle diameter is less, adopt original slurry-stirring process, easily cause slurry to produce particle, conductive agent dispersion is uneven, and Stability of Slurry is poor, and finally has influence on battery with two side terminals.The object of this invention is to provide a kind of preparation method of lithium battery lithium titanate cathode size, dispersed to each component of slurry to realize within a short period of time, its slurry uniformity prepared is good, excellent in stability, its battery pole piece adhesion prepared is improved simultaneously, and therefore improves the chemical property of battery with two side terminals and battery thereof.
In order to realize foregoing invention object, the present invention adopts technical scheme as described below:
1, thickener soln preparation: added by a certain percentage in deionized water solvent by thickener sodium carboxymethylcellulose (CMC), be uniformly dissolved with mixer, take out for subsequent use, the time is 60 ~ 100 minutes;
2, dispersion powder: lithium titanate, conductive agent are added agitator dispersed with stirring in proportion, the time is 30 ~ 40 minutes, and time 1/2 and at the end of, scrape the powder on paddle and staving;
3, high-viscosity stirring: add in 55% ~ 60% powder after above-mentioned stirring of thickener soln total amount, dispersed with stirring, the time is 60 ~ 70 minutes, and the time 1/3,2/3 and at the end of, scrape the slurry on paddle and staving, slurry temperature controls between 25 ~ 35 DEG C;
4, low viscosity stirs: add in 35 ~ 30% slurries after above-mentioned high-viscosity stirring of thickener soln total amount, dispersed with stirring, the time is 60 ~ 70 minutes, and the time 1/3,2/3 and at the end of, scrape the slurry on paddle and staving, slurry temperature controls between 25 ~ 35 DEG C;
5, viscosity test: the slurry viscosity that above-mentioned steps low viscosity stirs is carried out viscosity test, as at normal range (NR) 2000 ~ 5000MpaS, directly enters next step; As exceeded above-mentioned scope, then add 5% ~ 10% of thickener soln total amount, then dispersed with stirring, time is 30 ~ 40 minutes, and time 1/2 and at the end of, scrape the slurry on paddle and staving, detect a slurry viscosity again, reaching range of viscosities requirement can enter next step;
6, binding agent adds: add binding agent SBR, dispersed with stirring, the time is 10 ~ 30 minutes;
7, vacuum froth breaking: under stirring at low speed state, vacuumize staving, vacuum degree is-0.09 ~-0.1MPa, and the time is 15 ~ 30 minutes, namely obtains the lithium titanate cathode size prepared by the inventive method.
One or both mixing in above-mentioned steps 2 in the lithium titanate of lithium titanate prepared by anatase titanium dioxide or rutile titanium dioxide.
In above-mentioned steps 2, conductive agent is one or more mixtures in conductive black, electrically conductive graphite, carbon nano-tube, carbon fiber, Graphene.
In above-mentioned steps 1, step 2 and step 6, the mass ratio of each component of lithium titanate, conductive agent, thickener, binding agent is followed successively by (90-97): (1-4): (1-5): (1-3), and solvent is 80% ~ 120% of above-mentioned each component total amount.
In above steps, mixing plant is double-planet de-airing mixer, and slurry temperature is that the method that utilization passes into the thermostatical circulating water of relevant temperature to planet stirring bucket controls.
Owing to adopting technique scheme, the present invention has following superiority:
1, preparation time is short: lithium titanate cathode size preparation time whole process of the present invention is about 265 ~ 380 minutes, and in subsequent preparation process, by the accumulation of practical experience several times, viscosity test step can be omitted, directly enter last vacuum defoaming process, 30 ~ 40 minutes can be saved thus, first thickener soln is prepared if any multiple devices, 60 ~ 100 minutes can be saved again, compare the conventional anode blank preparation technics time of about 7 ~ 9 hours, substantially increase production efficiency;
2, equipment attrition is little: the present invention only in the end just needs to vacuumize staving in vacuum defoaming process, compare traditional handicraft to need in slurry preparation process, keep vacuumizing state to stirring system always, heat difficulty in whipping process is caused to distribute, the drawback that slurry temperature easily raises, have substance and improve effect, the short time vacuumizes process and reduces facility load, reduces equipment attrition;
3, energy consumption is low: the lithium titanate cathode size solid content obtained by the present invention is about 45 ~ 55%, compare conventional fabrication process, there is high solids content, low viscous feature, the ratio also corresponding minimizing of the water therefore used, reduce in subsequent coating processes the energy consumption needed for moisture evaporation;
4, dispersion effect is good: negative electrode active material, conductive agent are first carried out dispersed with stirring by the present invention, avoid conductive agent and produce reunion in the slurry, adopt high-viscosity stirring dispersion early stage, the mechanicals efforts (extruding, collision, friction) of paddle to slurry is large, good dispersion effect can be played, adopt low viscosity to stir again, each component is thoroughly scatter.
Adopt the lithium battery obtained by lithium battery lithium titanate cathode size provided by the invention, internal resistance is low, not easily generates heat, and energy density is high, good cycle, long service life.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
With the lithium titanate prepared by anatase titanium dioxide for negative pole, SP is conductive agent, by Li
4ti
5o
12: the mass ratio of SP:CMC:SBR=94.0:1.5:2.0:2.5, solvent deionized water is 100% of above-mentioned each component total amount.Preparation process is as follows:
1, add in deionized water solvent by thickener CMC, be uniformly dissolved with mixer, take out for subsequent use, the time is 60 minutes;
2, negative electrode active material, conductive agent are added agitator dispersed with stirring, the time is 30 minutes, and when 15 minutes time and 30 minutes, scrapes the powder on paddle and staving;
3, add in 55% powder after above-mentioned stirring of thickener soln total amount, dispersed with stirring, the time is 60 minutes, and when 20 minutes time, 40 minutes and 60 minutes, scrapes the slurry on paddle and staving, and slurry temperature controls between 25 ~ 35 DEG C;
4, add in 35% slurry after above-mentioned high-viscosity stirring of thickener soln total amount, dispersed with stirring, the time is 60 minutes, and when 20 minutes time, 40 minutes and 60 minutes, scrapes the slurry on paddle and staving, and slurry temperature controls between 25 ~ 35 DEG C;
5, the slurry viscosity that above-mentioned steps low viscosity stirs is carried out viscosity test, test result is 5332MpaS, super normal range value, adds 5% of solvent total amount, then dispersed with stirring, time is 30 minutes, and when 15 minutes time and 30 minutes, scrape the slurry on paddle and staving, then detect a slurry viscosity, test result is 4215MpaS, reaches range of viscosities requirement;
6, add binding agent SBR, dispersed with stirring, the time is 10 minutes;
7, under stirring at low speed state, vacuumize staving, vacuum degree is-0.09 ~-0.1MPa, and the time is 15 minutes, namely obtains the lithium titanate cathode size prepared by the inventive method, about 265 minutes consuming time altogether.
According to lithium battery conventional production process, by lithium titanate cathode size through coating, dry, roll film, point cut into negative plate, then be assembled into iron phosphate lithium positive pole sheet, barrier film, electrolyte, battery case, after discharge and recharge activation, obtained 18650 types, initial designs capacity are the cylinder ferric phosphate lithium cell of 1350mA.
Comparative example 1
Cathode size production technology conveniently, prepares about 7 hours consuming time, and according to lithium battery conventional production process, obtained 18650 types, initial designs capacity are the cylinder ferric phosphate lithium cell of 1350mA.
Electrical performance testing is carried out to 18650 type cylinder ferric phosphate lithium cells obtained by embodiment 1 and comparative example 1, its charge and discharge under 1C, the circulation volume conservation rate of 1000 times, embodiment 1 is 98.14%, comparative example 1 is 96.85%, energy density and inner walkway comparing result as shown in table 1.
Embodiment 2
With the lithium titanate prepared by rutile titanium dioxide for negative pole, SP is conductive agent, by Li
4ti
5o
12: the mass ratio of SP:CMC:SBR=94.5:2.0:1.6:1.9, solvent deionized water is 80% of above-mentioned each component total amount.Preparation process is as follows:
1, add in deionized water solvent by thickener CMC, be uniformly dissolved with mixer, take out for subsequent use, the time is 120 minutes;
2, negative electrode active material, conductive agent are added agitator dispersed with stirring, the time is 40 minutes, and when 20 minutes time and 40 minutes, scrapes the powder on paddle and staving;
3, add in 60% powder after above-mentioned stirring of thickener soln total amount, dispersed with stirring, the time is 70 minutes, and when 23 minutes time, 46 minutes and 70 minutes, scrapes the slurry on paddle and staving, and slurry temperature controls between 25 ~ 35 DEG C;
4, add in 35% slurry after above-mentioned high-viscosity stirring of thickener soln total amount, dispersed with stirring, the time is 70 minutes, and when 23 minutes time, 46 minutes and 70 minutes, scrapes the slurry on paddle and staving, and slurry temperature controls between 25 ~ 35 DEG C;
5, the slurry viscosity that above-mentioned steps low viscosity stirs is carried out viscosity test, test result is 4578MpaS, belongs to normal range value, reaches requirement;
6, add binding agent SBR, dispersed with stirring, the time is 30 minutes;
7, under stirring at low speed state, vacuumize staving, vacuum degree is-0.09 ~-0.1MPa, and the time is 30 minutes, namely obtains the lithium titanate cathode size prepared by the inventive method, about 360 minutes consuming time altogether.
According to lithium battery conventional production process, by lithium titanate cathode size through coating, dry, roll film, point cut into negative plate, then be assembled into lithium cobaltate cathode sheet, barrier film, electrolyte, battery case, after discharge and recharge activation, obtained 18650 types, initial designs capacity are the cylindrical battery of 1600mA.
Comparative example 2
Cathode size production technology conveniently, prepares about 7.5 hours consuming time, and according to lithium battery conventional production process, obtained 18650 types, initial designs capacity are the cylindrical battery of 1600mA.
Electrical performance testing is carried out to 18650 type cylindrical batteries obtained by embodiment 2 and comparative example 2, its charge and discharge under 1C, the circulation volume conservation rate of 1000 times, embodiment 2 is 97.23%, comparative example 2 is 93.23%, energy density and inner walkway comparing result as shown in table 1.
The energy density of each embodiment of table 1. and comparative example and inner walkway comparing result
As can be seen from the above table, adopt the lithium battery obtained by lithium titanate cathode size prepared by the inventive method, all higher than the lithium battery obtained by conventional anode slurry production process in energy density, all lower than the lithium battery obtained by conventional anode slurry production process in internal resistance.
More than show and describe general principle of the present invention and principal character and advantage of the present invention; the technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection range is defined by appending claims and equivalent thereof.
Claims (5)
1. a preparation method for lithium battery lithium titanate cathode size, its preparation process is as follows:
(1) thickener soln preparation: added by a certain percentage in deionized water solvent by thickener sodium carboxymethylcellulose (CMC), be uniformly dissolved with mixer, take out for subsequent use, the time is 60 ~ 100 minutes;
(2) dispersion powder: lithium titanate, conductive agent are added agitator dispersed with stirring in proportion, the time is 30 ~ 40 minutes, and time 1/2 and at the end of, scrape the powder on paddle and staving;
(3) high-viscosity stirring: add in 55% ~ 60% powder after above-mentioned stirring of thickener soln total amount, dispersed with stirring, the time is 60 ~ 70 minutes, and the time 1/3,2/3 and at the end of, scrape the slurry on paddle and staving, slurry temperature controls between 25 ~ 35 DEG C;
(4) low viscosity stirs: add in 35 ~ 30% slurries after above-mentioned high-viscosity stirring of thickener soln total amount, dispersed with stirring, the time is 60 ~ 70 minutes, and the time 1/3,2/3 and at the end of, scrape the slurry on paddle and staving, slurry temperature controls between 25 ~ 35 DEG C;
(5) viscosity test: the slurry viscosity that above-mentioned steps low viscosity stirs is carried out viscosity test, as at normal range (NR) 2000 ~ 5000MpaS, directly enters next step; As exceeded above-mentioned scope, then add 5% ~ 10% of thickener soln total amount, then dispersed with stirring, time is 30 ~ 40 minutes, and time 1/2 and at the end of, scrape the slurry on paddle and staving, detect a slurry viscosity again, reaching range of viscosities requirement can enter next step;
(6) binding agent adds: add binding agent SBR, dispersed with stirring, the time is 10 ~ 30 minutes;
(7) vacuum froth breaking: under stirring at low speed state, vacuumize staving, vacuum degree is-0.09 ~-0.1MPa, and the time is 15 ~ 30 minutes, namely obtains the lithium titanate cathode size prepared by the inventive method.
2. the preparation method of a kind of lithium battery lithium titanate cathode size according to claim 1, is characterized in that, one or both the mixing in above-mentioned steps (2) in the lithium titanate of lithium titanate prepared by anatase titanium dioxide or rutile titanium dioxide.
3. the preparation method of a kind of lithium battery lithium titanate cathode size according to claim 1, is characterized in that, in above-mentioned steps (2), conductive agent is one or more mixtures in conductive black, electrically conductive graphite, carbon nano-tube, carbon fiber, Graphene.
4. the preparation method of a kind of lithium battery lithium titanate cathode size according to claim 1, it is characterized in that, in above-mentioned steps (1), step (2) and step (6), the mass ratio of each component of lithium titanate, conductive agent, thickener, binding agent is followed successively by (90-97): (1-4): (1-5): (1-3), and solvent is 80% ~ 120% of above-mentioned each component total amount.
5. the preparation method of a kind of lithium battery lithium titanate cathode size according to claim 1, it is characterized in that, in above steps, mixing plant is double-planet de-airing mixer, and slurry temperature is that the method that utilization passes into the thermostatical circulating water of relevant temperature to planet stirring bucket controls.
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| CN201510529085.7A CN105161675A (en) | 2015-08-25 | 2015-08-25 | Preparation method for lithium titanate negative electrode slurry of lithium battery |
| PCT/CN2016/086292 WO2017032155A1 (en) | 2015-08-25 | 2016-06-17 | Preparation method for lithium battery lithium titanate negative electrode slurry |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058259A (en) * | 2016-01-21 | 2016-10-26 | 万向A二三系统有限公司 | High-specific-capacity silicon-based negative electrode composite binder and preparation method for negative plate containing same |
| WO2017032155A1 (en) * | 2015-08-25 | 2017-03-02 | 田东 | Preparation method for lithium battery lithium titanate negative electrode slurry |
| CN107834048A (en) * | 2017-11-24 | 2018-03-23 | 深圳市比克动力电池有限公司 | Negative electrode of lithium titanate battery slurry and preparation method thereof |
| CN108172756A (en) * | 2018-01-31 | 2018-06-15 | 北京国能电池科技股份有限公司 | The preparation method of negative electrode slurry |
| CN109728272A (en) * | 2018-12-19 | 2019-05-07 | 南昌卡耐新能源有限公司 | A kind of lithium battery anode pulping process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891283A (en) * | 2011-07-22 | 2013-01-23 | 湖北骆驼特种电源有限公司 | Dry blending process for cathode of lithium-ion power battery |
| CN102916166A (en) * | 2012-10-16 | 2013-02-06 | 彩虹集团公司 | Lithium ion battery paste preparation method |
| CN104681785A (en) * | 2015-02-12 | 2015-06-03 | 山东精工电子科技有限公司 | Lithium ion battery anode coating material and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694872B (en) * | 2009-10-21 | 2011-08-17 | 保定风帆新能源有限公司 | Mixing preparation method of pulp of lithium ion battery |
| CN102403531B (en) * | 2011-11-15 | 2014-03-05 | 山东精工电子科技有限公司 | High rate lithium iron phosphate cell and preparation method thereof |
| CN102856556A (en) * | 2012-08-23 | 2013-01-02 | 青岛瀚博电子科技有限公司 | Preparation method of cathode slurry for aquo-lithium titanate dynamical type battery |
| CN103872288B (en) * | 2014-03-17 | 2016-09-14 | 山东润峰集团新能源科技有限公司 | A kind of preparation method of lithium ion battery cathode slurry |
| CN105140521B (en) * | 2015-08-24 | 2017-11-14 | 深圳市斯诺实业发展股份有限公司 | A kind of preparation method of cathode of lithium battery slurry |
| CN105161675A (en) * | 2015-08-25 | 2015-12-16 | 田东 | Preparation method for lithium titanate negative electrode slurry of lithium battery |
-
2015
- 2015-08-25 CN CN201510529085.7A patent/CN105161675A/en active Pending
-
2016
- 2016-06-17 WO PCT/CN2016/086292 patent/WO2017032155A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891283A (en) * | 2011-07-22 | 2013-01-23 | 湖北骆驼特种电源有限公司 | Dry blending process for cathode of lithium-ion power battery |
| CN102916166A (en) * | 2012-10-16 | 2013-02-06 | 彩虹集团公司 | Lithium ion battery paste preparation method |
| CN104681785A (en) * | 2015-02-12 | 2015-06-03 | 山东精工电子科技有限公司 | Lithium ion battery anode coating material and preparation method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017032155A1 (en) * | 2015-08-25 | 2017-03-02 | 田东 | Preparation method for lithium battery lithium titanate negative electrode slurry |
| CN106058259A (en) * | 2016-01-21 | 2016-10-26 | 万向A二三系统有限公司 | High-specific-capacity silicon-based negative electrode composite binder and preparation method for negative plate containing same |
| CN106058259B (en) * | 2016-01-21 | 2018-07-27 | 万向一二三股份公司 | A kind of preparation method of height ratio capacity silicon-based anode compound binding agent and the negative plate containing the binder |
| CN107834048A (en) * | 2017-11-24 | 2018-03-23 | 深圳市比克动力电池有限公司 | Negative electrode of lithium titanate battery slurry and preparation method thereof |
| CN108172756A (en) * | 2018-01-31 | 2018-06-15 | 北京国能电池科技股份有限公司 | The preparation method of negative electrode slurry |
| CN108172756B (en) * | 2018-01-31 | 2020-07-14 | 北京国能电池科技股份有限公司 | Preparation method of negative electrode slurry |
| CN109728272A (en) * | 2018-12-19 | 2019-05-07 | 南昌卡耐新能源有限公司 | A kind of lithium battery anode pulping process |
| CN110165157A (en) * | 2019-04-22 | 2019-08-23 | 河南电池研究院有限公司 | A kind of uniform method for mixing of the lithium titanate slurry of carbon nanotubes |
| CN110165157B (en) * | 2019-04-22 | 2022-03-18 | 河南电池研究院有限公司 | Uniform mixing method of lithium titanate slurry containing carbon nano tubes |
| CN112531202A (en) * | 2020-12-04 | 2021-03-19 | 上海普澜特夫精细化工有限公司 | Preparation method of electrode slurry containing porous material |
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