CN107681191A - A kind of high-voltage lithium ion batteries - Google Patents

A kind of high-voltage lithium ion batteries Download PDF

Info

Publication number
CN107681191A
CN107681191A CN201710756173.XA CN201710756173A CN107681191A CN 107681191 A CN107681191 A CN 107681191A CN 201710756173 A CN201710756173 A CN 201710756173A CN 107681191 A CN107681191 A CN 107681191A
Authority
CN
China
Prior art keywords
lithium ion
electrolyte
pole piece
ion batteries
agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710756173.XA
Other languages
Chinese (zh)
Inventor
李艳芬
张江伟
王永宁
刘晓萌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
Original Assignee
China University of Mining and Technology CUMT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT filed Critical China University of Mining and Technology CUMT
Priority to CN201710756173.XA priority Critical patent/CN107681191A/en
Publication of CN107681191A publication Critical patent/CN107681191A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01M10/0566—Liquid materials
    • H01M10/0567—Liquid materials characterised by the additives
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a kind of high-voltage lithium ion batteries, and it includes anode pole piece, cathode pole piece, barrier film, electrolyte；Anode pole piece includes plus plate current-collecting body and the anode sizing agent coated in plus plate current-collecting body surface, and anode sizing agent includes positive active material, conductive agent A and binding agent A；Cathode pole piece includes negative current collector and the cathode size coated in negative current collector surface, and the cathode size includes negative electrode active material, conductive agent B, dispersant and binding agent B；Electrolyte includes lithium salts, non-aqueous organic solvent and additive LiDFP and PST.The present invention is using LiDFP and PST as electrolyte complex function additive, pass through both cooperative effects, so that using lithium ion battery prepared by the electrolyte under 4.5V high voltage condition, have extended cycle life, it is recycled more than 1000 times when capability retention reaches 90%, significantly improves normal-temperature circulating performance of the lithium ion battery under high voltage condition.

Description

A kind of high-voltage lithium ion batteries
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of high-voltage lithium ion batteries.
Background technology
To meet electric automobile maximization and the needs of motorization, the lithium ion battery of high-energy-density is developed as must Right trend.It is to improve the effective way of lithium ion battery energy density to improve operating voltage, and high operating voltage is to battery material Material system especially requires higher to the electrochemical stability of electrolyte, and therefore, development high safety, high-voltage functions electrolyte are high Than the important directions of energy battery research and development.
Research is found, the stabilization of film forming in high voltage system can be improved by adding characteristic additive in the electrolytic solution Property, lift the cycle life and high temperature performance of battery.Ko-Eun Kim etc. [1] discoveries LiDFP (difluorophosphate, LiPF2O2) when being used as additive under normal temperature condition, LiF proportions are larger in the SEI films that negative pole is formed, and are advantageous to improve The stability of interfacial film, but the transmission resistance of lithium ion can be increased simultaneously, make the membrane impedance of battery increase；Bowen.Yang etc. [2] LiDFP is have studied to LiNi0.5Co0.2Mn0.3O2The influence of/graphite battery cryogenic properties, find LiDFP under low temperature It has been decomposed to form and has been rich in LiF and Li2CO3SEI films, make battery impedance reduce while, cycle performance also obtains carrying greatly very much It is high.But above result of study is to test to obtain under common voltage, i.e., it is not yet reported that LiDFP is added into high voltage electricity High-voltage battery is made in solution liquid.
[1]Kim,K.E.；Jang,Y.J.；Park,Y.；et al.A combination of lithium difluorophosphate and vinylene carbonate as reducible additives to improve cycling performance of graphite electrodes at high rates.Electrochemistry Communication,2015,61,121-124.
[2]Yang B.W.；Zhang H.；Le Y.；et al.Lithium difluorophosphate as an additive to improve the low temperature performance of LiNi0.5Co0.2Mn0.3O2/ graphite cells.Electrochimica Acta,2016,221,107-114.
The content of the invention
It is an object of the invention to provide a kind of high-voltage lithium ion batteries, can improve the energy density of battery, extend circulation Life-span.
To achieve the above object, a kind of high-voltage lithium ion batteries of the invention include anode pole piece, cathode pole piece, setting Barrier film between anode pole piece and cathode pole piece, and electrolyte；
The anode pole piece includes plus plate current-collecting body and the anode sizing agent coated in plus plate current-collecting body surface, the positive pole slurry Material includes positive active material, conductive agent A and binding agent A, and the mass ratio of positive active material, conductive agent A and binding agent A is 95.5：3：1.5；
The cathode pole piece includes negative current collector and the cathode size coated in negative current collector surface, the negative pole slurry Material includes negative electrode active material, conductive agent B, dispersant and binding agent B, negative electrode active material, conductive agent B, dispersant and bonding Agent B mass ratio is 95：1.5：1.5：2；
The electrolyte includes electrolyte lithium salt, non-aqueous organic solvent and additive, and the additive is difluorophosphate (LiDFP) and 1,3- propene sulfonic acid lactones (PST), LiDFP and PST mass percent concentration are identical.
Preferably, the mass percent of the additive in the electrolytic solution is 0.1~2%.It is furthermore preferred that the additive Mass percent in the electrolytic solution is 1%.
Preferably, the positive active material is LiNi0.5Co0.2Mn0.3O2, the conductive agent A is by Super-P and KS-6 In mass ratio 1:1 composition, the binding agent A is Kynoar (PVDF).
Preferably, the negative electrode active material is composite graphite, and the conductive agent B is Super-P, and the dispersant is carboxylic Sodium carboxymethylcellulose pyce (CMC), the binding agent are butadiene-styrene rubber (SBR).
Preferably, the electrolyte lithium salt is selected from LiPF6、LiClO4、LiBOB、LiBF4、LiAsF6, in LiODFB, LiCl Any one, the concentration of the lithium salts is 0.8~1.5mol/L.
Preferably, the non-aqueous organic solvent is selected from ethylene carbonate, propene carbonate, butylene, carbonic acid diformazan In ester, diethyl carbonate, methyl ethyl carbonate and methyl propyl carbonate it is any two or more.
Further, the charge cutoff voltage of the high-voltage lithium ion batteries is 4.5V.
The present invention is using LiDFP and PST as electrolyte complex function additive, and wherein LiDFP HOMO energy levels are than electricity It is high to solve liquid solvent molecule, oxidation reaction preferentially can occur in positive electrode surface in cyclic process, form stable interfacial film (SEI) electrolyte contact with positive electrode surface active sites, is reduced, electrolyte can be suppressed oxidation Decomposition occurs in subsequent circulation And the destruction of cathode material structure, reduce the loss of irreversible capacity；PST can form stable on battery positive and negative electrode surface SEI films, common embedding and reduction decomposition of the solvent molecule in negative pole can be suppressed, so as to improve the cyclicity of high-voltage lithium ion batteries Energy.
The present invention is by adjusting cooperative effect caused by LiDFP and PST proportioning so that is prepared using the electrolyte Lithium ion battery has extended cycle life under 4.5V high voltage condition, when capability retention reach 90% recyclable 1000 times with On, normal-temperature circulating performance of the lithium ion battery under high voltage condition is significantly improved, is advantageously implemented the height of lithium ion battery Pressureization.
Brief description of the drawings
Fig. 1 is the cycle performance of the embodiment of the present invention 2 and the high-voltage lithium ion batteries obtained by comparative example 1,2,5,6 Figure.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
The assembling process of full battery is as follows：
(1) prepared by anode pole piece：To be adapted to high-tension ternary material LiNi by coating0.5Co0.2Mn0.3O2For positive pole Active material, by 95.5% LiNi0.5Co0.2Mn0.3O2, 1.5% conductive agent Super-P and 1.5% conductive agent KS-6, 1.5% binding agent PVDF is mixed and made into anode sizing agent and is uniformly coated on plus plate current-collecting body aluminium foil, at 110 DEG C~145 DEG C Baking oven in be baked to anode pole piece weightlessness than ＜ 0.2%, be then cut into sheet, then cut into small pieces, aluminium pole ears of burn-oning, and High tempreture tape is pasted on aluminium pole ears, that is, obtains anode pole piece；
(2) prepared by cathode pole piece：Using composite graphite as negative electrode active material, 95.0% composite graphite, 1.5% are led Electric agent Super-P, 1.5% dispersing agent C MC and 2% binding agent SBR are mixed and made into cathode size and are uniformly coated on negative pole On copper foil of affluxion body, cathode pole piece weightlessness is baked in 70 DEG C~90 DEG C of baking oven than ＜ 0.2%, is then cut into sheet, then Small pieces are cut into, nickel lug of burn-oning, and paste high tempreture tape on nickel lug, that is, obtain cathode pole piece；
(3) prepared by electrolyte：In the glove box full of argon gas, by up-to-standard solvent ethylene carbonate, carbonic acid first Ethyl ester in mass ratio 3:7 mixing, then add lithium salts LiPF6Concentration to lithium salts is 1mol/L, is stirred continuously during this, then The additive LiDFP and PST for accounting for electrolyte gross mass 1% respectively are added, is stirred, that is, electrolyte is made；
(4) assemble：On the winder by anode pole piece, PP barrier films, cathode pole piece, PP barrier films sequential volume around obtaining cylinder Type core, core is fitted into box hat, is put into insulating trip up and down, point back welding, slot rolling, welding cap cap, then in 80 DEG C of vacuum drying 72h is toasted in case, electrolyte is finally injected in the glove box full of argon gas, seals, mantle, that is, obtains full battery.
Embodiment 2
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is LiDFP and PST, accounts for electrolyte gross mass respectively 0.5%.
Embodiment 3
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 0.8mol/L；Non-aqueous organic solvent is (mass ratio of three is 4 for ethylene carbonate, diethyl carbonate, propene carbonate:5:1)；Additive is LiDFP and PST, respectively Account for the 0.05% of electrolyte gross mass.
Embodiment 4
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1.5mol/L；Non-aqueous organic solvent is (four mass ratio is 4 for ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, butylene:2:3:1)；Additive is LiDFP and PST, the 0.5% of electrolyte gross mass is accounted for respectively.
Comparative example 1
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is not contained.
Comparative example 2
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is vinylene carbonate (VC), accounts for the total matter of electrolyte The 0.5% of amount.
Comparative example 3
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is LiDFP, accounts for the 1% of electrolyte gross mass.
Comparative example 4
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is PST, accounts for the 1% of electrolyte gross mass.
Comparative example 5
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is LiDFP, accounts for the 0.5% of electrolyte gross mass.
Comparative example 6
In addition to the composition difference of electrolyte, the remainder of high-voltage lithium ion batteries is same as Example 1.
The composition of electrolyte is as follows：Lithium salts is LiPF6, and the concentration of lithium salts is 1mol/L；Non-aqueous organic solvent is carbon (both mass ratioes are 3 for vinyl acetate, methyl ethyl carbonate:7)；Additive is PST, accounts for the 0.5% of electrolyte gross mass.
The normal temperature circulation test of full battery：
Under the conditions of 25 DEG C ± 3 DEG C, battery is charged into 4.5V in a manner of 1C multiplying powers constant current-constant pressure, cut-off current is 0.02C, then by 1C constant-current discharges to 3V, be so recycled to capability retention and reach 90%, with the discharge capacity of n-th divided by The average of the discharge capacity of preceding ten times, obtain circulating the capability retention of n-th, data comparison such as table 1：
Table 1
With reference to table 1 and Fig. 1, compare comparative example 1~6 and embodiment 1~2 is understood, when in electrolyte without LiDFP additives, Battery capacity decays quickly, and cycle-index is less；When adding LiDFP and PST compound additives, the capacity attenuation speed of battery Slow down, and when LiDFP and PST additions are 0.5%, cycle-index is most, when to illustrate LiDFP and PST contents be 0.5% Most beneficial for the cycle life for improving battery.
The electrolyte lithium salt is except the LiPF being related in above example and comparative example6, LiClO can also be selected4、 LiBOB、LiBF4、LiAsF6, any one in LiODFB, LiCl.

Claims (8)

1. a kind of high-voltage lithium ion batteries, including anode pole piece, cathode pole piece, it is arranged between anode pole piece and cathode pole piece Barrier film, and electrolyte, the anode pole piece include plus plate current-collecting body and the anode sizing agent coated in plus plate current-collecting body surface, The cathode pole piece includes negative current collector and the cathode size coated in negative current collector surface, and the electrolyte includes electrolysis Matter lithium salts, non-aqueous organic solvent and additive；Characterized in that,
The anode sizing agent includes positive active material, conductive agent A and binding agent A, positive active material, conductive agent A and bonding Agent A mass ratio is 95.5：3：1.5；
The cathode size includes negative electrode active material, conductive agent B, dispersant and binding agent B, negative electrode active material, conductive agent B, dispersant and binding agent B mass ratio are 95：1.5：1.5：2；
The additive is the matter of difluorophosphate and 1,3- propene sulfonic acid lactones, difluorophosphate and 1,3- propene sulfonic acid lactones It is identical to measure percent concentration.
2. high-voltage lithium ion batteries according to claim 1, it is characterised in that the matter of the additive in the electrolytic solution It is 0.1~2% to measure percentage.
3. high-voltage lithium ion batteries according to claim 2, it is characterised in that the matter of the additive in the electrolytic solution It is 1% to measure percentage.
4. according to the high-voltage lithium ion batteries described in any one of claims 1 to 3, it is characterised in that the positive electrode active material Matter is LiNi0.5Co0.2Mn0.3O2, the conductive agent A is by Super-P and KS-6 in mass ratio 1:1 composition, the binding agent A are Kynoar.
5. according to the high-voltage lithium ion batteries described in any one of claims 1 to 3, it is characterised in that the negative electrode active material Matter is composite graphite, and the conductive agent B is Super-P, and the dispersant is sodium carboxymethylcellulose, and the binding agent is butylbenzene Rubber.
6. according to the high-voltage lithium ion batteries described in any one of claims 1 to 3, it is characterised in that the electrolyte lithium salt Selected from LiPF6、LiClO4、LiBOB、LiBF4、LiAsF6, any one in LiODFB, LiCl, the concentration of the lithium salts is 0.8~1.5mol/L.
7. according to the high-voltage lithium ion batteries described in any one of claims 1 to 3, it is characterised in that described non-aqueous organic molten Agent is selected from ethylene carbonate, propene carbonate, butylene, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate and carbonic acid In first propyl ester it is any two or more.
8. according to the high-voltage lithium ion batteries described in any one of claims 1 to 3, it is characterised in that the high voltage lithium from The charge cutoff voltage of sub- battery is 4.5V.
CN201710756173.XA 2017-08-29 2017-08-29 A kind of high-voltage lithium ion batteries Pending CN107681191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710756173.XA CN107681191A (en) 2017-08-29 2017-08-29 A kind of high-voltage lithium ion batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710756173.XA CN107681191A (en) 2017-08-29 2017-08-29 A kind of high-voltage lithium ion batteries

Publications (1)

Publication Number Publication Date
CN107681191A true CN107681191A (en) 2018-02-09

Family

ID=61134452

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710756173.XA Pending CN107681191A (en) 2017-08-29 2017-08-29 A kind of high-voltage lithium ion batteries

Country Status (1)

Country Link
CN (1) CN107681191A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110197894A (en) * 2018-02-26 2019-09-03 宁德新能源科技有限公司 Cathode pole piece and lithium ion battery including cathode pole piece

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014072025A (en) * 2012-09-28 2014-04-21 Panasonic Corp Nonaqueous electrolyte secondary battery and method for manufacturing the same
CN106025359A (en) * 2016-07-08 2016-10-12 珠海市赛纬电子材料股份有限公司 Lithium ion power battery non-water electrolyte
CN106252639A (en) * 2016-10-17 2016-12-21 广州天赐高新材料股份有限公司 A kind of high-capacity lithium ion cell electrolyte, preparation method and lithium ion battery taking into account high temperature performance
CN106920992A (en) * 2015-12-27 2017-07-04 深圳市沃特玛电池有限公司 A kind of high magnification capacity type power battery electrolyte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014072025A (en) * 2012-09-28 2014-04-21 Panasonic Corp Nonaqueous electrolyte secondary battery and method for manufacturing the same
CN106920992A (en) * 2015-12-27 2017-07-04 深圳市沃特玛电池有限公司 A kind of high magnification capacity type power battery electrolyte
CN106025359A (en) * 2016-07-08 2016-10-12 珠海市赛纬电子材料股份有限公司 Lithium ion power battery non-water electrolyte
CN106252639A (en) * 2016-10-17 2016-12-21 广州天赐高新材料股份有限公司 A kind of high-capacity lithium ion cell electrolyte, preparation method and lithium ion battery taking into account high temperature performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110197894A (en) * 2018-02-26 2019-09-03 宁德新能源科技有限公司 Cathode pole piece and lithium ion battery including cathode pole piece

Similar Documents

Publication Publication Date Title
KR102000100B1 (en) Additive for non-aqueous electrolyte, non aqueous electrolyte for lithium secondary battery comprising the same, and lithium secondary battery
CN106159325B (en) A kind of low temperature electrolyte for lithium ion battery and low-temperature lithium ion battery
CN111883839B (en) High-voltage electrolyte and lithium ion battery based on same
CN109728340B (en) Lithium ion battery
CN110112465B (en) Electrolyte for battery with lithium-rich manganese-based positive electrode material system and lithium ion battery
US20120009472A1 (en) Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery
CN104979589A (en) High-voltage electrolyte and lithium ion battery using electrolyte
CN103078141A (en) Lithium-ion secondary battery and electrolyte thereof
CN105226324B (en) A kind of high-voltage electrolyte and the lithium ion battery using the electrolyte
CN109888384B (en) Electrolyte and battery containing the same
CN103021671A (en) Capacitor of lithium ion battery
CN106159330A (en) A kind of PC base high-voltage electrolyte and a kind of lithium ion battery
CN105261790A (en) Electrolyte and lithium-ion battery including same
CN108258317B (en) Lithium-sulfur battery
CN109004275B (en) Electrolyte solution and secondary battery
CN113410511A (en) Lithium ion battery and electronic device
CN107482247A (en) A kind of high-voltage lithium ion batteries
CN105140565A (en) Nonaqueous electrolyte for high-voltage lithium-ion battery and lithium-ion battery
CN107221705A (en) A kind of high-voltage lithium-ion battery electrolyte and high-voltage lithium ion batteries
CN102832409B (en) Low temperature lithium ion battery electrolyte and its preparation method
CN104409771A (en) Nitrile ethyl hydrofluoroether-containing electrolyte and lithium secondary battery
CN109309249A (en) Electrolyte and electrochemical energy storage device
CN114300735B (en) Lithium secondary battery
CN110707358A (en) Electrolyte for high-voltage lithium ion battery
WO2013151096A1 (en) Lithium secondary cell

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180209