CN107768712A - A kind of preparation method and lithium ion battery of lithium ion battery solid electrolyte film - Google Patents

A kind of preparation method and lithium ion battery of lithium ion battery solid electrolyte film Download PDF

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Publication number
CN107768712A
CN107768712A CN201610671460.6A CN201610671460A CN107768712A CN 107768712 A CN107768712 A CN 107768712A CN 201610671460 A CN201610671460 A CN 201610671460A CN 107768712 A CN107768712 A CN 107768712A
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lithium ion
ion battery
mass ratio
solid electrolyte
film
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杨国龙
杨斌斌
许辉
饶睦敏
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Shenzhen OptimumNano Energy Co Ltd
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Shenzhen OptimumNano Energy Co Ltd
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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
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • 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
    • 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
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

A kind of preparation method of lithium ion battery solid electrolyte film, comprises the following steps：Step 1：It is prepared by negative pole homogenate：Graphite, conductive agent and binding agent are weighed by certain mass ratio, adds deionized water, negative pole homogenate is disperseed using mechanical agitation dispersion machine；Step 2：It is prepared by organic solution electroplating pool：Lithium salts, organic solvent and additive are weighed by certain mass ratio, prepares organic solvent electrolytic cell；Step 3：By the surface coated in copper foil of affluxion body and drying after the negative pole homogenate sieving in step 1, primary negative plate is made；And step 4：The primary negative plate of step 3 is immersed in the organic solution electroplating pool of step 2, give primary negative plate plating last layer organic film using low current, finally take out drying.The present invention also provides a kind of lithium ion battery, made of above-mentioned steps 1 to the method described in step 4 negative plate of solid electrolyte film and barrier film, positive plate and electrolyte through two pairs of rollers, film-making, assembling, fluid injection, sealing process and be made.

Description

A kind of preparation method and lithium ion battery of lithium ion battery solid electrolyte film
【Technical field】
The present invention relates to cell art, more particularly to a kind of preparation method of lithium ion battery solid electrolyte film and Lithium ion battery.
【Background technology】
Chemical conversion is an important procedure in lithium ion battery production process, and so-called chemical conversion is electrolyte and electrolyte in electricity React to form the process of solid electrolyte (Solid electrolyte interphase, SEI) film on the negative pole of pond.SEI Film is electronic body, is the excellence conductor of lithium ion, and the SEI films of uniform stabilization can be steady in organic electrolyte well It is fixed to exist, it can prevent solvent molecule directly and electrode material contacts, so as to avoid the common insertion of solvent molecule to electrode material Destruction caused by material, therefore the SEI films for forming uniform stabilization (such as circulate, again to the various chemical properties of lithium ion battery Rate, storage, security performance) play vital effect.
However, in traditional chemical synthesis technology, the formation of SEI films, part lithium ion is consumed so that first charge-discharge is irreversible Capacity increase, reduces the first charge-discharge efficiency of electrode material, positive and negative electrode stock utilization is low, and battery manufacture cost is corresponding Increase；Meanwhile in the process electrolyte and electrolyte react produce ethene, divinyl, fluorination phosphorus, hydrogen fluoride, dioxy Change the gases such as carbon, carbon monoxide, these gases can cause soft-package battery external drum, deformation or steel in inside lithium ion cell accumulation Housing battery breaks unlatching, and the performance of lithium ion battery is had undesirable effect.
In consideration of it, real be necessary to provide a kind of preparation method and lithium ion of new lithium ion battery solid electrolyte film Battery is to overcome disadvantages described above.
【The content of the invention】
The present invention provides a kind of preparation method of lithium ion battery solid electrolyte film, comprises the following steps：
Step 1：It is prepared by negative pole homogenate：Graphite, conductive agent and binding agent are weighed by certain mass ratio, then adds deionization Water, and negative pole homogenate is disperseed using mechanical agitation dispersion machine；
Step 2：It is prepared by organic solution electroplating pool：Lithium salts, organic solvent and additive are weighed by certain mass ratio, is formulated with Solvent electrolytic cell；
Step 3：Surface and the drying of copper foil of affluxion body, system will be uniformly coated on after negative pole homogenate sieving in step 1 Into primary negative plate；And
Step 4：Primary negative plate obtained by step 3 is immersed in the organic solution electroplating pool described in step 2, using small electricity Flow to the primary negative plate plating last layer organic film, finally take out drying.
The present invention also provides a kind of lithium ion battery, the solid electrolytic made of above-mentioned steps 1 to the method described in step 4 The negative plate of plasma membrane and barrier film, positive plate and electrolyte through two pairs of rollers, film-making, assembling, fluid injection, sealing process and be made.
The preparation method of lithium ion battery solid electrolyte film provided by the invention, by being electroplated in advance on negative plate One layer of SEI film, reduce the chemical conversion stage because forming the lithium ion consumed needed for SEI films, improve filling first for lithium ion battery Discharging efficiency, electrolyte is avoided with gas caused by electrolysis qualitative response to harmful effect caused by performance of lithium ion battery； Also, the present invention electroplates to form SEI films by negative plate in organic solution electroplating pool small current, and the SEI films being prepared into are uniform It is stable, there is the function of good transmission lithium ion and insulated electronic, prepared lithium ion battery has good cyclicity Energy and storage performance.
【Brief description of the drawings】
Fig. 1 is the first charge-discharge pond efficiency of the lithium ion battery for the lithium ion battery and embodiment of the present invention for contrasting case Comparison diagram.
Fig. 2 is that the 3C of the lithium ion battery for the lithium ion battery and embodiment of the present invention for contrasting case circulates comparison diagram.
【Embodiment】
In order that the purpose of the present invention, technical scheme and advantageous effects become apparent from understanding, below in conjunction with accompanying drawing and Embodiment, the present invention will be described in further detail.It should be appreciated that the specific implementation described in this specification Mode is not intended to limit the present invention just for the sake of explaining the present invention.
The present invention provides a kind of preparation method of lithium ion battery solid electrolyte film, comprises the following steps：
Step 1：It is prepared by negative pole homogenate：Graphite, conductive agent and binding agent are weighed by certain mass ratio, then adds deionization Water, and negative pole homogenate is disperseed using mechanical agitation dispersion machine；
Step 2：It is prepared by organic solution electroplating pool：Lithium salts, organic solvent and additive are weighed by certain mass ratio, is formulated with Solvent electrolytic cell；
Step 3：Surface and the drying of copper foil of affluxion body, system will be uniformly coated on after negative pole homogenate sieving in step 1 Into primary negative plate；And
Step 4：Primary negative plate obtained by step 3 is immersed in the organic solution electroplating pool described in step 2, using small electricity Flow to the primary negative plate plating last layer organic film, then take out drying.
Specifically, the graphite in the step 1 is one in native graphite, Delanium, composite graphite, soft carbon and hard carbon Kind is a variety of.The conductive agent is electrically conductive graphite.The binding agent is one kind of LA133, CMC, SBR aqueous binders.It is described Mass ratio shared by graphite is 90%~95%, and the mass ratio shared by the conductive agent is 1%~4%, shared by the binding agent Mass ratio be 2%~6%.
Specifically, the electrically conductive graphite is one kind in SP, KS, ECP, CNT, VGCF.
Specifically, in the step 1 negative pole homogenate solid content be 45%~55%, viscosity be 600~ 1500mPa.s。
Specifically, the lithium salts in the step 2 is LiClO4、LiAsF6、LiBF4、LiPF6、LiN(CF3SO2)2、 LiCF3SO3, one or more in LiBOB.Solvent is in EC, PC, BC, DMC, EMC, DEC, GBL, EA, PA, EP, THF, DME One or more.Additive is the one or more in VC, FEC, PS, LiODFB, HDMS, TTFP, BP.Shared by the lithium salts Mass ratio be 10%~15%, mass ratio shared by the solvent is 84%~88%, the mass ratio shared by the additive For 1%~3%.
The present invention also provides a kind of lithium ion battery, by with above-mentioned steps 1 to step 4 made of solid electrolyte film Negative plate and barrier film, positive plate and electrolyte through two pairs of rollers, film-making, assembling, fluid injection, sealing process and be made.
Contrast case：
1) it is prepared by negative pole homogenate：94% native graphite, 2.5%SP, 1.5%CMC, 2% are weighed by certain dry powder quality SBR, first CMC, which is dissolved in deionized water, is configured to glue, then sequentially adds SP, native graphite and SBR, is disperseed with mechanical agitation Machine disperses negative pole homogenate, and the solid content of the negative pole homogenate is 45%~55%, and viscosity is 600~1500mPa.s；
2) surface and the drying of copper foil of affluxion body will be uniformly coated on after negative pole homogenate sieving.
Embodiment 1：
1) it is prepared by negative pole homogenate：94% native graphite, 2.5%SP, 1.5%CMC, 2% are weighed by certain dry powder quality SBR, first CMC, which is dissolved in deionized water, is configured to glue, then sequentially adds SP, native graphite and SBR, is disperseed with mechanical agitation Machine disperses negative pole homogenate, and the solid content of the negative pole homogenate is 45%~55%, and viscosity is 600~1500mPa.s；
2) prepared by organic solution electroplating pool：Lithium Salt LiBOB is weighed by certain mass ratio:LiPF6:LiBF4:LiAsF6=1: 1:0.5:0.5, the 13% of organic solution electroplating pool quality described in total lithium salts quality accounting；It is 1 in mass ratio:1:1 weigh EC, DMC, EMC organic solvent, the 85% of organic solution electroplating pool quality described in total organic solvent quality accounting；It is 1 in mass ratio: 1:1:1:1 weighs VC, LiODFB, HDMS, TTFP, BP additive, organic solution electricity described in total organic additive quality accounting Plate the 2% of pond quality；
3) surface and the drying of copper foil of affluxion body will be uniformly coated on after negative pole homogenate sieving, primary negative plate is made；
4) primary negative plate is immersed in the organic solution electroplating pool, primary negative plate connection electroplating pool power supply is born Pole, power supply positive pole connection lithium piece or can provide lithium source have can deintercalation structure lithium salts, using 0.3C low currents to just Level negative plate plating last layer organic film, finally takes out drying.
Embodiment 2：
1) it is prepared by negative pole homogenate：94% native graphite, 2.5%SP, 1.5%CMC, 2% are weighed by certain dry powder quality SBR, first CMC, which is dissolved in deionized water, is configured to glue, then sequentially adds SP, native graphite and SBR, is disperseed with mechanical agitation Machine disperses negative pole homogenate, and the solid content of the negative pole homogenate is 45%~55%, and viscosity is 600~1500mPa.s；
2) prepared by organic solution electroplating pool：Lithium Salt LiBOB is weighed by certain mass ratio:LiPF6:LiBF4=1:2:0.5, always Lithium salts quality accounting described in organic solution electroplating pool quality 14%；It is 0.5 in mass ratio:0.5:1:1 weigh EC, PC, DMC, EMC organic solvent, the 84.5% of organic solution electroplating pool quality described in total organic solvent quality accounting；It is in mass ratio 1:1:1:1 weighs VC, LiODFB, HDMS, BP additive, organic solution electroplating pool matter described in total organic additive quality accounting The 85% of amount；
3) surface and the drying of copper foil of affluxion body will be uniformly coated on after negative pole homogenate sieving, primary negative plate is made；
4) primary negative plate is immersed in the organic solution electroplating pool, primary negative plate connection electroplating pool power supply is born Pole, power supply positive pole connection lithium piece or can provide lithium source have can deintercalation structure lithium salts, using 0.15C low currents to just Negative plate electroplates last layer organic film, finally takes out drying.
Embodiment 3：
1) it is prepared by negative pole homogenate：94% native graphite, 2.5%SP, 1.5%CMC, 2% are weighed by certain dry powder quality SBR, first CMC, which is dissolved in deionized water, is configured to glue, then sequentially adds SP, native graphite and SBR, is disperseed with mechanical agitation Machine disperses negative pole homogenate, and the solid content of the negative pole homogenate is 45%~55%, and viscosity is 600~1500mPa.s；
2) prepared by organic solution electroplating pool：Lithium Salt LiBOB is weighed by certain mass ratio:LiPF6:LiBF4=2:1:0.5, always Lithium salts quality accounting described in organic solution electroplating pool quality 12%；It is 0.5 in mass ratio:0.5:1:1 weigh EC, PC, DMC, EMC organic solvent, the 85% of organic solution electroplating pool quality described in total organic solvent quality accounting；It is 2 in mass ratio: 1:0.5:0.5 weighs VC, LiODFB, HDMS, BP additive, organic solution electroplating pool described in total organic additive quality accounting The 3% of quality；
3) surface and the drying of copper foil of affluxion body will be uniformly coated on after negative pole homogenate sieving, primary negative plate is made；
4) primary negative plate is immersed in the organic solution electroplating pool, primary negative plate connection electroplating pool power supply is born Pole, power supply positive pole connection lithium piece or can provide lithium source have can deintercalation structure lithium salts, using 0.5C low currents to just Negative plate electroplates last layer organic film, finally takes out drying.
Fig. 1 is that the first charge-discharge pond efficiency comparative of the battery for the battery and embodiment of the present invention for contrasting case schemes, from Fig. 1 It can be seen that：First charge-discharge of the first charge-discharge efficiency of embodiment 1, embodiment 2 and embodiment 3 apparently higher than contrast case Efficiency, and its stability, better than contrast case, the lithium salt wherein in organic electroplating solution in embodiment 2 is maximum, institute With the first charge-discharge efficiency highest of embodiment 2.
Fig. 2 is that the 3C of the battery for the battery and embodiment of the present invention for contrasting case circulates comparison diagram, as seen from Figure 2： The cycle performance of embodiment 1, embodiment 2 and embodiment 3 is substantially better than contrast case, and reason is to produce SEI films by preceding plating, Reduce the Battery formation stage because of harmful effect of the gas to battery caused by the reaction of electrolyte and electrolyte.
Table 1 is as follows to contrast 60 DEG C of high-temperature storage performance contrast tables of the battery of the battery of case and the embodiment of the present invention：
Table 1：60 DEG C of high-temperature storage performances for contrasting case and the embodiment of the present invention contrast
It can be drawn by table 1, apply the conservation rate of 60 DEG C of high temperature storages of example 1, embodiment 2 and embodiment 3 and recover forthright Contrast case can be substantially better than.
The preparation method of lithium ion battery solid electrolyte film provided by the invention, by being electroplated in advance on negative plate One layer of SEI film, reduce the chemical conversion stage because forming the lithium ion consumed needed for SEI films, improve filling first for lithium ion battery Discharging efficiency, electrolyte is avoided with gas caused by electrolysis qualitative response to harmful effect caused by performance of lithium ion battery； Also, the present invention electroplates to form SEI films by negative plate in organic solution electroplating pool small current, and the SEI films being prepared into are uniform It is stable, there is the function of good transmission lithium ion and insulated electronic, prepared lithium ion battery has good cyclicity Energy and storage performance.
The present invention is not restricted to described in specification and embodiment, therefore for the personnel of familiar field Additional advantage and modification is easily achieved, therefore in the essence of the universal limited without departing substantially from claim and equivalency range In the case of refreshing and scope, the present invention is not limited to specific details, representational equipment and shown here as the diagram with description Example.

Claims (7)

  1. A kind of 1. preparation method of lithium ion battery solid electrolyte film, it is characterised in that：Comprise the following steps：
    Step 1：It is prepared by negative pole homogenate：Graphite, conductive agent and binding agent are weighed by certain mass ratio, then adds deionized water, And negative pole homogenate is disperseed using mechanical agitation dispersion machine；
    Step 2：It is prepared by organic solution electroplating pool：Lithium salts, organic solvent and additive are weighed by certain mass ratio, is prepared organic molten Agent electrolytic cell；
    Step 3：Surface and the drying of copper foil of affluxion body will be uniformly coated on after negative pole homogenate sieving in step 1, be made just Level negative plate；And
    Step 4：Primary negative plate obtained by step 3 is immersed in the organic solution electroplating pool described in step 2, given using low current The primary negative plate plating last layer organic film, finally takes out drying.
  2. 2. the preparation method of lithium ion battery solid electrolyte film as claimed in claim 1, it is characterised in that：The step 1 In graphite be one or more in native graphite, Delanium, composite graphite, soft carbon and hard carbon, the conductive agent is leads Electro-graphitic, the binding agent are one kind of LA133, CMC, SBR aqueous binders, mass ratio shared by the graphite for 90%~ 95%, the mass ratio shared by the conductive agent is 1%~4%, and the mass ratio shared by the binding agent is 2%~6%.
  3. 3. the preparation method of lithium ion battery solid electrolyte film as claimed in claim 2, it is characterised in that：The conductive stone Ink is one kind in SP, KS, ECP, CNT, VGCF.
  4. 4. the preparation method of lithium ion battery solid electrolyte film as claimed in claim 3, it is characterised in that：The step 1 In negative pole homogenate solid content be 45%~55%, viscosity is 600~1500mPa.s.
  5. 5. the preparation method of lithium ion battery solid electrolyte film as claimed in claim 4, it is characterised in that：The step 2 In lithium salts be LiClO4、LiAsF6、LiBF4、LiPF6、LiN(CF3SO2)2、LiCF3SO3, one or more in LiBOB；It is molten Agent is the one or more in EC, PC, BC, DMC, EMC, DEC, GBL, EA, PA, EP, THF, DME；Additive be VC, FEC, One or more in PS, LiODFB, HDMS, TTFP, BP.
  6. 6. the preparation method of lithium ion battery solid electrolyte film as claimed in claim 5, it is characterised in that：The lithium salts institute The mass ratio accounted for is 10%~15%, and the mass ratio shared by the solvent is 84%~88%, the quality shared by the additive Than for 1%~3%.
  7. A kind of 7. lithium ion battery, it is characterised in that：The solid electrolyte film made of with the method as described in claim 1 Negative plate and barrier film, positive plate and electrolyte through two pairs of rollers, film-making, assembling, fluid injection, sealing process and be made.
CN201610671460.6A 2016-08-15 2016-08-15 A kind of preparation method and lithium ion battery of lithium ion battery solid electrolyte film Pending CN107768712A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109585917A (en) * 2018-12-11 2019-04-05 广东永邦新能源股份有限公司 A kind of polymer dielectric and preparation method thereof and the battery including the polymer dielectric
CN110534706A (en) * 2019-09-06 2019-12-03 燕山大学 A kind of passivation of lithium powder and its preparation method and application
CN113013383A (en) * 2021-04-07 2021-06-22 深圳市虎电固态新能源科技有限公司 Preparation method of lithium battery pole piece and solid-state lithium battery thereof
US11688859B2 (en) * 2018-03-20 2023-06-27 Betolar Oy Voltage source with an electrolyte containing ash, and method for manufacturing the voltage source

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CN102290614A (en) * 2011-07-21 2011-12-21 东莞新能源科技有限公司 Lithium ion battery and method for increasing capacity thereof
CN103794756A (en) * 2012-11-02 2014-05-14 海洋王照明科技股份有限公司 Lithium-pre-embedded graphene pole piece, preparation method thereof and applications thereof
CN103915262A (en) * 2013-01-04 2014-07-09 深圳清华大学研究院 Method for lithium pre-embedment of negative electrode of lithium ion capacitor
CN104037458A (en) * 2014-05-16 2014-09-10 中国科学院电工研究所 Manufacturing method of lithium ion energy storage device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290614A (en) * 2011-07-21 2011-12-21 东莞新能源科技有限公司 Lithium ion battery and method for increasing capacity thereof
CN103794756A (en) * 2012-11-02 2014-05-14 海洋王照明科技股份有限公司 Lithium-pre-embedded graphene pole piece, preparation method thereof and applications thereof
CN103915262A (en) * 2013-01-04 2014-07-09 深圳清华大学研究院 Method for lithium pre-embedment of negative electrode of lithium ion capacitor
CN104037458A (en) * 2014-05-16 2014-09-10 中国科学院电工研究所 Manufacturing method of lithium ion energy storage device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11688859B2 (en) * 2018-03-20 2023-06-27 Betolar Oy Voltage source with an electrolyte containing ash, and method for manufacturing the voltage source
CN109585917A (en) * 2018-12-11 2019-04-05 广东永邦新能源股份有限公司 A kind of polymer dielectric and preparation method thereof and the battery including the polymer dielectric
CN110534706A (en) * 2019-09-06 2019-12-03 燕山大学 A kind of passivation of lithium powder and its preparation method and application
CN113013383A (en) * 2021-04-07 2021-06-22 深圳市虎电固态新能源科技有限公司 Preparation method of lithium battery pole piece and solid-state lithium battery thereof

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Application publication date: 20180306