CN106972193A - A kind of high magnification fills the preparation method of lithium ion battery soon - Google Patents
A kind of high magnification fills the preparation method of lithium ion battery soon Download PDFInfo
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- CN106972193A CN106972193A CN201710188772.6A CN201710188772A CN106972193A CN 106972193 A CN106972193 A CN 106972193A CN 201710188772 A CN201710188772 A CN 201710188772A CN 106972193 A CN106972193 A CN 106972193A
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- lithium ion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A kind of high magnification fills the preparation method of lithium ion battery soon, the manufacture for lithium ion battery.Using coating machine, positive and negative electrode slurry is respectively coated on a current collector, through being dried to obtain positive and negative electrode volume；Again positive and negative electrode film-making is obtained after roll, cutting；By negative pole film-making and positive pole film-making, non-woven fabrics membrane winding into battery core；Battery core is loaded into housing, chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature are injected after being dried through ultrahigh vacuum, that is, obtains lithium ion battery.Disperse to form uniform positive and negative electrode conductive gelatin by the present invention in that being heated at high temperature with two kinds of different type glue and conductive agent, using the electrolyte containing special additive and the barrier film with high porosity and air penetrability, Lithium-ion embeding negative pole speed and positive electrode surface lithium ion abjection positive pole speed can be improved, reduce cathode interface impedance, reduce the internal resistance of cell, increase high magnification rapid charging performance, fast lifting lithium ion through-rate.
Description
Technical field
The present invention relates to technical field of lithium ion, specifically a kind of high magnification fills the preparation side of lithium ion battery soon
Method.
Background technology
Lithium ion battery has the advantage such as operating high voltage, high-energy-density, long circulation life, low self-discharge rate, pollution-free,
The electronic equipments such as digital class, family's energy storage class have been widely used in, and in automobile start and stop battery, electric automobile and hybrid power
The fields such as automobile show wide application prospect and powerful growth momentum.
At present, high magnification fills lithium ion battery and received significant attention soon.In order to improve battery high magnification rapid charging performance, typically
The purpose that high magnification fills soon is reached by increasing the electric conductivity of negative pole, such as reduces negative pole surface density, increase cathode conductive agent
Content, increase afflux body thickness etc. can improve the high magnification rapid charging performance of battery to a certain extent, but this method,
The specific energy and practicality of battery can be substantially reduced.
The content of the invention
To overcome the deficiencies in the prior art, goal of the invention of the invention is that provide a kind of high magnification fills lithium ion battery soon
Preparation method, with the purpose realized lithium ion battery high magnification and filled soon.
For achieving the above object, preparation method of the invention is as follows：
（a）Make negative pole film-making
（a1）Polyacrylate, sodium alginate, conductive agent, solvent are heated at high temperature in proportion and disperseed, negative pole is configured to and leads
Electric glue；The negative conductive glue is made up of following material according to mass percent：Polyacrylate 20 ~ 30%, sodium alginate
1% ~ 5%, conductive agent 10 ~ 20%, solvent 45 ~ 65%；Heating temperature range is at 70 ~ 100 DEG C, and the heat time is in 0.5 ~ 2h；
（a2）Above-mentioned negative conductive glue, negative material, solvent are uniformly mixed in proportion, cathode size is configured to；It is described negative
Pole slurry is made up of following material according to mass percent：Negative conductive glue 5% ~ 10%, negative material 40% ~ 45%, solvent 45%
~55%；
（a3）Using coating machine, by cathode size coating on a current collector, through being dried to obtain negative pole volume；Again by roll, cutting
After obtain negative pole film-making；
（b）Make positive pole film-making
（b1）Polyacrylate, acrylonitrile multiple copolymer, conductive agent, solvent are heated into scattered, preparation at high temperature in proportion
Into positive conductive glue；The positive conductive glue is made up of following material according to mass percent：Polyacrylate 20 ~ 30%,
Acrylonitrile multiple copolymer 1% ~ 5%, conductive agent 10 ~ 20%, solvent 45 ~ 65%；Heating temperature range is in 70 ~ 100 DEG C, heat time
In 0.5 ~ 2h；
（b2）Above-mentioned positive conductive glue, positive electrode, solvent are uniformly mixed in proportion, anode sizing agent is configured to；It is described just
Pole slurry is made up of following material according to percentage by weight：Positive conductive glue 5% ~ 10%, positive electrode 40% ~ 45%, solvent 45%
~55%；
（b3）Using coating machine, by anode sizing agent coating on a current collector, through being dried to obtain positive pole volume；Again by roll, cutting
After obtain positive pole film-making；
（c）Battery makes
（c1）By the above-mentioned negative pole film-making prepared and positive pole film-making, non-woven fabrics membrane winding into battery core；
（c2）Battery core is loaded into housing, chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature are injected after being dried through ultrahigh vacuum, i.e.,
Obtain lithium ion battery.
The solvent is one kind in deionized water, two kinds of isopropanol；Or the mixed solution made in proportion, the mixing
Solution is made according to mass percent：Deionized water 97% ~ 99.5%, isopropanol 0.5% ~ 3%.
The positive electrode is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, lithium ferric manganese phosphate
In one or more mixtures；The negative material is hard carbon, soft carbon, MCMB, silicon tin negative pole, composite stone
One or more mixtures in ink, silicon-carbon cathode, lithium titanate.
The conductive agent is superconduction carbon black, electrically conductive graphite, CNT CNTS, carbon nano-fiber VGCF, multi-layer graphene
In any one or a few composition combined conductive agent.
The non-woven fabrics barrier film porosity is 40% ~ 75%, and air penetrability is in 40-500s/ml, and thickness is 12-40um.
The lithium hexafluoro phosphate of the electrolyte including 1 ~ 1.5 mol/L, mass percent for 3 ~ 6% propene carbonate,
15 ~ 20% ethylene carbonate, 20 ~ 25% dimethyl carbonates, 10 ~ 15% methyl ethyl carbonates, the 22 of 1 ~ 2% hat pentaethers, 1 ~ 2%
Vinylene carbonate, 0.5 ~ 1% cyclohexyl benzene, 5 ~ 10% ethyl acetate.
The present invention compared with prior art, by the lithium ion battery that makes of the present invention have excellent chemical property,
High magnification rapid charging performance.Heated at high temperature with conductive agent by using two kinds of different type glue of polyacrylate and sodium alginate
Scattered to form uniform negative conductive glue, the battery being made using the conductive gelatin can improve the speed of Lithium-ion embeding negative pole,
Cathode interface impedance is reduced, and then reduces the internal resistance of cell, increases high magnification rapid charging performance；It is many using polyacrylate and acrylonitrile
The two distinct types of glue of membered copolymer is heated at high temperature with conductive agent to be disperseed to form uniform positive conductive glue, can be improved
Positive electrode surface lithium ion deviates from the speed of positive pole, reduces positive pole interface impedance, and then reduces the internal resistance of cell, and increase high magnification fills soon
Performance；Using the electrolyte containing special additive, the high magnification rapid charging performance of battery can be improved；Using with high porosity and
The barrier film of air penetrability, can the speed that passes through of fast lifting lithium ion.
Brief description of the drawings
Fig. 1 fills the multiplying power charging curve of lithium ion battery for the high magnification of embodiment 1 soon.
Fig. 2 fills the multiplying power charging curve of lithium ion battery for the high magnification of embodiment 2 soon.
Fig. 3 fills the multiplying power charging curve of lithium ion battery for the high magnification of embodiment 3 soon.
Embodiment
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The all other embodiment obtained, belongs to the scope of protection of the invention.
Embodiment 1
1st, sample making
（1）Polyacrylate 30%, sodium alginate 1%, superconduction carbon black 17%, solvent 52% are taken, when 70 DEG C of heating-up temperature, heating are scattered
Between 2h, negative conductive glue is made.
（2）Take polyacrylate 30%, acrylonitrile multiple copolymer 1%, superconduction carbon black 17%, solvent 52%；Heating-up temperature 70
DEG C, heating jitter time 2h, positive conductive glue is made.
（3）Take LiFePO4 45%, positive conductive glue 5% and solvent 50% uniformly to be mixed by stirring technique, be configured to positive pole
Slurry；Using coating machine, by anode sizing agent coating on a current collector, through being dried to obtain positive pole volume；Obtained again after roll, cutting
To positive pole film-making.
（4）Take hard carbon 45%, negative conductive glue 5% and solvent 50% uniformly to be mixed by stirring technique, be configured to negative pole slurry
Material；Using coating machine, by cathode size coating on a current collector, through being dried to obtain negative pole volume；Obtained again after roll, cutting
Negative pole film-making.
（5）By the above-mentioned negative pole film-making prepared and positive pole film-making, non-woven fabrics membrane winding into battery core；Battery core is loaded into shell
Body, injects the process such as chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature, that is, obtains lithium-ion electric after being dried through ultrahigh vacuum
Pond.The electrolyte includes PC propene carbonates, 20% carbon of the lithium hexafluoro phosphate of 1.2 mol/Ls, mass percent for 3%
Vinyl acetate, 25% dimethyl carbonate, 10% methyl ethyl carbonate, the 22 of 1% hat pentaethers, 2% vinylene carbonate, 0.5%
Cyclohexyl benzene, 5% ethyl acetate.
2nd, high magnification rapid charging performance is tested
2.1 method of testing
At 25 DEG C of normal temperature, by battery with 1C electric current constant-current discharges to 2500mv, shelve 5 minutes, then respectively with 3C, 4C, 5C,
6C, 8C, 10C constant-current constant-voltage charging are to 3650mv, and it is 0.05C to control cut-off current, is shelved 30 minutes；During record battery it is total
The battery capacity and battery surface maximum temperaturerise data of charging capacity, constant current section, and make multiplying power charging curve.
2.2 test datas such as table 1 and multiplying power charging curve is as shown in Figure 1.
Embodiment 2
1st, sample making
（1）Take polyacrylate 20%, sodium alginate 5%, electrically conductive graphite 16%, deionized water 59%, 80 DEG C of heating-up temperature, heating point
Time 1.5h is dissipated, negative conductive glue is made.
（2）Take polyacrylate 20%, acrylonitrile multiple copolymer 5%, electrically conductive graphite 16%, solvent 59%；Heating-up temperature 80
DEG C, heating jitter time 1.5h positive conductive glue is made.
（3）Take LiFePO4 40%, positive conductive glue 10% and solvent 50% uniformly to be mixed by stirring technique, be configured to just
Pole slurry；Using coating machine, by anode sizing agent coating on a current collector, through being dried to obtain positive pole volume；Again after roll, cutting
Obtain positive pole film-making.
（4）Take soft carbon 40%, negative conductive glue 10% and solvent 50% uniformly to be mixed by stirring technique, be configured to negative pole slurry
Material；Using coating machine, by cathode size coating on a current collector, through being dried to obtain negative pole volume；Obtained again after roll, cutting
Negative pole film-making.
（5）By the above-mentioned negative pole film-making prepared and positive pole film-making, non-woven fabrics membrane winding into battery core；Battery core is loaded into shell
Body, injects the process such as chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature, that is, obtains lithium-ion electric after being dried through ultrahigh vacuum
Pond.The electrolyte includes PC propene carbonates, 15% carbonic acid of the lithium hexafluoro phosphate of 1 mol/L, mass percent for 3%
Vinyl acetate, 20% dimethyl carbonate, 10% methyl ethyl carbonate, the 22 of 1% hat pentaethers, 2% vinylene carbonate, 1%
Cyclohexyl benzene, 10% ethyl acetate.
2nd, high magnification rapid charging performance is tested
2.1 method of testing
At 25 DEG C of normal temperature, by battery with 1C electric current constant-current discharges to 2500mv, shelve 5 minutes, then respectively with 3C, 4C, 5C,
6C, 8C, 10C constant-current constant-voltage charging are to 3650mv, and it is 0.05C to control cut-off current, is shelved 30 minutes；During record battery it is total
The battery capacity and battery surface maximum temperaturerise data of charging capacity, constant current section, and make multiplying power charging curve.
2.2 test datas such as table 2 and multiplying power charging curve is as shown in Figure 2.
Embodiment 3
1st, sample making
（1）Take polyacrylate 24%, sodium alginate 2.5%, CNT CNTS15%, isopropanol 58.5%, 90 DEG C of heating-up temperature,
Jitter time 1h is heated, negative conductive glue is made.
（2）Take polyacrylate 24%, acrylonitrile multiple copolymer 2.5%, CNT CNTS15%, isopropanol 58.5%；
Positive conductive glue is made in 90 DEG C of heating-up temperature, heating jitter time 1h.
（3）Take LiFePO4 43%, positive conductive glue 8% and solvent 49% uniformly to be mixed by stirring technique, be configured to positive pole
Slurry；Using coating machine, by anode sizing agent coating on a current collector, through being dried to obtain positive pole volume；Obtained again after roll, cutting
To positive pole film-making.
（4）Take hard carbon 43%, negative conductive glue 8% and solvent 49% uniformly to be mixed by stirring technique, be configured to negative pole slurry
Material；Using coating machine, by cathode size coating on a current collector, through being dried to obtain negative pole volume；Obtained again after roll, cutting
Negative pole film-making.
（5）By the above-mentioned negative pole film-making prepared and positive pole film-making, non-woven fabrics membrane winding into battery core；Battery core is loaded into shell
Body, injects the process such as chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature, that is, obtains lithium-ion electric after being dried through ultrahigh vacuum
Pond.The electrolyte includes PC propene carbonates, 20% carbon of the lithium hexafluoro phosphate of 1.5 mol/Ls, mass percent for 3%
Vinyl acetate, 20% dimethyl carbonate, 15% methyl ethyl carbonate, the 22 of 2% hat pentaethers, 2% vinylene carbonate, 1%
Cyclohexyl benzene, 10% ethyl acetate.
2nd, high magnification rapid charging performance is tested
2.1 method of testing
At 25 DEG C of normal temperature, by battery with 1C electric current constant-current discharges to 2500mv, shelve 5 minutes, then respectively with 3C, 4C, 5C,
6C, 8C, 10C constant-current constant-voltage charging are to 3650mv, and it is 0.05C to control cut-off current, is shelved 30 minutes；During record battery it is total
The battery capacity and battery surface maximum temperaturerise data of charging capacity, constant current section, and make multiplying power charging curve.
2.2 test datas such as table 3 and multiplying power charging curve is as shown in Figure 3.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. a kind of high magnification fills the preparation method of lithium ion battery soon, it is characterised in that：The preparation method is as follows：
（a）Make negative pole film-making
（a1）Polyacrylate, sodium alginate, conductive agent, solvent are heated at high temperature in proportion and disperseed, negative conductive is configured to
Glue；The negative conductive glue is made up of following material according to mass percent：Polyacrylate 20 ~ 30%, sodium alginate 1%
~ 5%, conductive agent 10 ~ 20%, solvent 45 ~ 65%；Heating temperature range is at 70 ~ 100 DEG C, and the heat time is in 0.5 ~ 2h；
（a2）Above-mentioned negative conductive glue, negative material, solvent are uniformly mixed in proportion, cathode size is configured to；The negative pole
Slurry is made up of following material according to mass percent：Negative conductive glue 5% ~ 10%, negative material 40% ~ 45%, solvent 45% ~
55%；
（a3）Using coating machine, by cathode size coating on a current collector, through being dried to obtain negative pole volume；Again after roll, cutting
Obtain negative pole film-making；
（b）Make positive pole film-making
（b1）Polyacrylate, acrylonitrile multiple copolymer, conductive agent, solvent are heated at high temperature in proportion and disperseed, is configured to
Positive conductive glue；The positive conductive glue is made up of following material according to mass percent：Polyacrylate 20 ~ 30%, third
Alkene nitrile multiple copolymer 1% ~ 5%, conductive agent 10 ~ 20%, solvent 45 ~ 65%；Heating temperature range is at 70 ~ 100 DEG C, and the heat time exists
0.5~2h；
（b2）Above-mentioned positive conductive glue, positive electrode, solvent are uniformly mixed in proportion, anode sizing agent is configured to；The positive pole
Slurry is made up of following material according to percentage by weight：Positive conductive glue 5% ~ 10%, positive electrode 40% ~ 45%, solvent 45% ~
55%；
（b3）Using coating machine, by anode sizing agent coating on a current collector, through being dried to obtain positive pole volume；Again after roll, cutting
Obtain positive pole film-making；
（c）Battery makes
（c1）By the above-mentioned negative pole film-making prepared and positive pole film-making, non-woven fabrics membrane winding into battery core；
（c2）Battery core is loaded into housing, chemical conversion, aging, partial volume after electrolyte, quiescence in high temperature are injected after being dried through ultrahigh vacuum, i.e.,
Obtain lithium ion battery.
2. a kind of high magnification height according to claim 1 fills the preparation method of lithium ion battery soon, it is characterised in that：It is described
Solvent is one kind in deionized water, two kinds of isopropanol；Or the mixed solution made in proportion, the mixed solution is according to quality
Percentage is made：Deionized water 97% ~ 99.5%, isopropanol 0.5% ~ 3%.
3. a kind of high magnification according to claim 1 fills the preparation method of lithium ion battery soon, it is characterised in that：It is described just
Pole material is the one or more in cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, LiFePO4, lithium ferric manganese phosphate
Mixture；The negative material is hard carbon, soft carbon, MCMB, silicon tin negative pole, composite graphite, silicon-carbon cathode, metatitanic acid
One or more mixtures in lithium.
4. a kind of high magnification height according to claim 1 fills the preparation method of lithium ion battery soon, it is characterised in that：It is described
Conductive agent is any one in superconduction carbon black, electrically conductive graphite, CNT CNTS, carbon nano-fiber VGCF, multi-layer graphene
Or the combined conductive agent of several compositions.
5. a kind of high magnification according to claim 1 fills the preparation method of lithium ion battery soon, it is characterised in that：The nothing
Cloth diaphragm porosity is spun 40% ~ 75%, air penetrability is in 40-500s/ml, and thickness is 12-40um.
6. a kind of high magnification according to claim 1 fills the preparation method of lithium ion battery soon, it is characterised in that：The electricity
Solving liquid includes the propene carbonate, 15 ~ 20% ethylene that the lithium hexafluoro phosphate of 1 ~ 1.5 mol/L, mass percent are 3 ~ 6%
Alkene ester, 20 ~ 25% dimethyl carbonates, 10 ~ 15% methyl ethyl carbonates, 1 ~ 2% 22 hat pentaethers, 1 ~ 2% vinylene carbonate,
0.5 ~ 1% cyclohexyl benzene, 5 ~ 10% ethyl acetate.
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Cited By (7)
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| CN107565107A (en) * | 2017-07-31 | 2018-01-09 | 广西中润四方税银科技有限公司 | A kind of graphene lithium battery material and preparation method thereof |
| CN108417884A (en) * | 2018-02-09 | 2018-08-17 | 东莞市诺威新能源有限公司 | It is a kind of to dodge the preparation method and lithium ion battery for filling high-capacity lithium ion cell |
| CN108511788A (en) * | 2018-03-29 | 2018-09-07 | 东莞市智盈新能源有限公司 | A kind of high magnification ternary system start and stop lithium ion battery and preparation method thereof |
| CN109148823A (en) * | 2018-08-23 | 2019-01-04 | 宁波瞬能科技有限公司 | One kind is ultrafast to fill lithium ion battery electrode and its preparation method and application |
| CN109256524A (en) * | 2017-07-15 | 2019-01-22 | 深圳格林德能源有限公司 | A kind of fast charging type high multiplying power lithium ion battery and preparation method thereof |
| CN109698376A (en) * | 2018-12-04 | 2019-04-30 | 天臣新能源研究南京有限公司 | A kind of fast charging type lithium ion battery with high energy density |
| CN113036230A (en) * | 2021-03-18 | 2021-06-25 | 广东邦普循环科技有限公司 | Preparation method and application of lithium cobaltate soft package battery |
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