CN106816629A - A kind of high-voltage electrolyte and lithium ion battery - Google Patents
A kind of high-voltage electrolyte and lithium ion battery Download PDFInfo
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- CN106816629A CN106816629A CN201510848401.7A CN201510848401A CN106816629A CN 106816629 A CN106816629 A CN 106816629A CN 201510848401 A CN201510848401 A CN 201510848401A CN 106816629 A CN106816629 A CN 106816629A
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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
- 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
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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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The present invention relates to a kind of high-voltage electrolyte and lithium ion battery, including nonaqueous solvents, lithium salts and additive, described additive includes extreme-pressure additive, extreme-pressure additive includes one or more in five member ring heterocyclic compound and/or one or more in 6-membered heterocyclic compound, and the general structure of five member ring heterocyclic compound is：；The general structure of 6-membered heterocyclic compound is：
Description
Technical field
The invention belongs to electrochemical technology field, and in particular to a kind of high-voltage electrolyte and lithium ion battery.
Background technology
At present, small-sized, the lightweight of the personal digital assistant device such as mobile phone, notebook computer rapidly develops, used as its driving electricity
Source, it is desirable to the cell high-capacity for being used.Required in order to correspondence is such, as height output, high-energy-density it is new
Secondary cell, using nonaqueous electrolytic solution, the lithium ion battery for making lithium ion be moved between both positive and negative polarity and carrying out discharge and recharge is wide
General utilization.
Used as the capacity for improving lithium ion battery, current feasible method has following several：(1) appearance of active material is improved
Amount；(2) charging voltage is improved；(3) increase the loading of active material and improve the methods such as packed density, wherein taking raising
In the case of charging voltage, there are problems that electrolyte holds labile, because lithium ion battery is electric in persistent loop discharge and recharge
Solution liquid is decomposed, and causes electrode material structure collapses, produces gas, cell expansion, cell internal pressure to become big.
Patent CN101454938A discloses a kind of lithium-ion battery electrolytes, including at least more than 2 fluorine atom substitutions
Cyclic carbonate, cyclic sulfonic acid ester compound, disulfonate compound, nitrile compound, alkyl Phosphonocarboxylate or fluoroalkane
Base Phosphonocarboxylate, the non-aqueous solution electrolysis liquid energy provides high power capacity and preservation characteristics and the excellent non-water power of cyclicity under high voltages
Solution liquid；It is wide that patent CN102576906A discloses a kind of electrochemical window, even and if repeated charge be all difficult to reduce discharge and recharge
Electrolyte for lithium ion battery, the electrolyte contains and contains the dinitrile compound that nitrile group is combined in two ends；
It is the preparation method of 5V lithium-ion battery electrolytes for voltage that CN102035022A is disclosed a kind of, and sulfone and carbonic ester are distinguished
Purifying water removal mixing, and lithium salts is dissolved in above-mentioned mixed solvent, additive uses difluoro di-oxalate lithium borate, the height for obtaining
Potential electrolysis liquid energy improves the compatibility of electrolyte and high-voltage anode, and positive electrode surface is decomposed in reducing charging process.But
It is, when the lithium ion battery in above-mentioned document uses the voltage of 4.85V and the above, the normal temperature circulation and safety of lithium ion battery
Performance still has much room for improvement.,
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of in 4.85V and above voltage still have good normal temperature
The high-voltage electrolyte and lithium ion battery of cycle performance and security performance.By adding one or more extreme-pressure additives,
Positive pole forms the passivating film of stabilization, and prevents electrolyte decomposition under high voltages.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of high-voltage electrolyte, including nonaqueous solvents, lithium salts and additive, described additive include high pressure resistant addition
Agent, described extreme-pressure additive is including in one or more in five member ring heterocyclic compound and/or 6-membered heterocyclic compound
One or more, the general structure of described five member ring heterocyclic compound is：Described 6-membered heterocyclic compound
General structure be：
Wherein, X group is selected from S, O, NR3In any one；Y group is selected from N or CR4；Z group is selected from N or CR5；A1It is selected from
N or CR3；A2Selected from N or CR4；A3Selected from N or CR5；A4Selected from N or CR6；R1、R2、R3、R4、R5、R6Independently selected from H, hydroxyl,
Phenyl, alkyl, amino, containing oxyalkyl, containing halogenalkyl, phenyl containing halogen, nitro, halogen, cyano group,In any one, Ra, Rb independently selected from H, hydroxyl, phenyl, amino, carbon number be 1
It 1~6 containing oxyalkyl, carbon number is 1~6 containing halogenalkyl, phenyl containing halogen, nitre that~6 alkyl, carbon number are
Any one in base, halogen, cyano group.
Preferably, described extreme-pressure additive is selected from one or more in following structural formula：
It is further preferred that described extreme-pressure additive is selected from one or more in following structural formula：
Most preferably, described extreme-pressure additive isOr, described extreme-pressure additive is In any two kinds of mixture.
Further, the addition mass ratio of the extreme-pressure additive described in two kinds is 1:0.5~1.5.
Preferably, described nonaqueous solvents is selected from carbonic ester, carboxylate, ether, fluoro carbonic ester, alpha-fluorocarboxylate ester, fluorine
For the mixed solvent of one or more in ether.
It is further preferred that described nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, carbonic acid third
The mixed solvent of one or more in alkene ester, fluorinated ethylene carbonate.
Most preferably, described nonaqueous solvents is 4~8 for addition mass ratio:1~5:5~10:1 ethylene carbonate,
Fluorinated ethylene carbonate, methyl ethyl carbonate, the mixed solvent of propene carbonate.
Preferably, described lithium salts is selected from lithium hexafluoro phosphate, LiBF4, di-oxalate lithium borate, difluoro oxalate boron
A kind of or several mixing in sour lithium, two (trimethyl fluoride sulfonyl) imine lithiums, double fluorine sulfimide lithiums, trifluoromethyl sulfonic acid lithium
Thing.
Preferably, described additive also includes film for additive, and described film for additive is selected from vinylene carbonate
Ester, fluorinated ethylene carbonate, ethylene carbonate vinylene, 1,3- propane sultones, 1,4- butane sultones, double fluoro carbon
Vinyl acetate, 1, the mixing of one or more in 3 propene sultones, the addition of described film for additive accounts for described
The 0.5%~8% of high-voltage electrolyte gross mass.
It is further preferred that the addition of described film for additive account for described high-voltage electrolyte gross mass 1%~
5%.
Preferably, described additive also includes anti-overcharge additive, and described anti-overcharge additive is selected from biphenyl, ring
The mixing of one or more in hexyl benzene, methyl phenyl ethers anisole, linear alkylbenzene (LAB), alkoxy benzene, fluorobenzene, alkoxy fluorobenzene, institute
The addition of the anti-overcharge additive stated accounts for the 0.1%~5% of described high-voltage electrolyte gross mass.
It is further preferred that the addition of described anti-overcharge additive accounts for described high-voltage electrolyte gross mass
0.2%~1%.
Preferably, the addition of described extreme-pressure additive account for described high-voltage electrolyte gross mass 0.1%~
10%.
It is further preferred that the addition of described extreme-pressure additive accounts for described high-voltage electrolyte gross mass
0.5%~5%.
Preferably, the addition of described additive accounts for the 0.7%~23% of described high-voltage electrolyte gross mass, described
The addition of nonaqueous solvents account for the 70%~95% of described high-voltage electrolyte gross mass, the addition of described lithium salts accounts for institute
The 3%~18% of the high-voltage electrolyte gross mass stated.
It is further preferred that the addition of described additive account for described high-voltage electrolyte gross mass 1.7%~
11%, the addition of described nonaqueous solvents accounts for the 80%~90% of described high-voltage electrolyte gross mass, described lithium salts
Addition accounts for the 8%~15% of described high-voltage electrolyte gross mass.
A kind of lithium ion battery, the electrolyte of described lithium ion battery is described high-voltage electrolyte, described positive pole
Active material is xLi2MO3·(1-x)LiM’O2、LiNi0.5Mn1.5O4、LiCoPO4、LiNiPO4In one or more, wherein,
M is Mn, Ti or Zr, and M ' is Mn, Ni, Co, and x is the number between 0~1.
Preferably, described lithium ion battery is the aluminum-shell battery of 1Ah.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
The present invention is by the improvement to additive so that the lithium ion battery being made of electrolyte of the invention is existed
The normal-temperature circulating performance of 4.85V and the above is greatly improved, also, electrolyte of the invention is when can suppress continuous discharge and recharge
The generation of gas so that be greatly improved using the security performance of the lithium ion battery of electrolyte of the invention.
Specific embodiment
The present invention is elaborated below in conjunction with specific embodiment：
Comparative example 1
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:16:35:5)；Lithium salts is lithium hexafluoro phosphate, and the mass concentration of the lithium salts is 12%；Film for additive is sub- carbonic acid
Vinyl acetate, accounts for the 1.5% of electrolyte gross mass；Overcharging additive biphenyl, accounts for the 0.5% of electrolyte gross mass.
Comparative example 2
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:16:35:5)；Lithium salts is lithium hexafluoro phosphate, and the mass concentration of the lithium salts is 12%；Film for additive is 1,3- third
Sultone, accounts for the 1.5% of electrolyte gross mass；Overcharging additive biphenyl, accounts for the 0.5% of electrolyte gross mass.
Embodiment 1
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:16:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the mass concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%.
Embodiment 2
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12% He
0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharging additive
Cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveAccount for the total matter of electrolyte
The mass percent of amount is 1%.
Embodiment 3
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12% He
0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharging additive
Cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveAccount for electrolyte total
The mass percent of quality is 1%.
Embodiment 4
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12% He
0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharging additive
Cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveAccount for electrolyte total
The mass percent of quality is 1%.
Embodiment 5
Nonaqueous solvents is ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, (four mass ratio is propene carbonate
30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12% He
0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharging additive
Cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveAccount for the total matter of electrolyte
The mass percent of amount is 1%.
Embodiment 6
Nonaqueous solvents is ethylene carbonate, fluorinated ethylene carbonate, methyl ethyl carbonate, propene carbonate (four quality
Than being 30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveThe mass percent for accounting for electrolyte gross mass respectively is 0.5% and 0.5%.
Embodiment 7
Nonaqueous solvents is ethylene carbonate, fluorinated ethylene carbonate, methyl ethyl carbonate, propene carbonate (four quality
Than being 30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveThe mass percent for accounting for electrolyte gross mass respectively is 0.5% and 0.5%.
Embodiment 8
Nonaqueous solvents is ethylene carbonate, fluorinated ethylene carbonate, methyl ethyl carbonate, propene carbonate (four quality
Than being 30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveThe mass percent for accounting for electrolyte gross mass respectively is 0.5% and 0.5%.
Embodiment 9
Nonaqueous solvents is ethylene carbonate, fluorinated ethylene carbonate, methyl ethyl carbonate, propene carbonate (four quality
Than being 30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveThe mass percent for accounting for electrolyte gross mass respectively is 0.5% and 0.5%.
Embodiment 10
Nonaqueous solvents is ethylene carbonate, fluorinated ethylene carbonate, methyl ethyl carbonate, propene carbonate (four quality
Than being 30:15:35:5)；Lithium salts is lithium hexafluoro phosphate and difluorine oxalic acid boracic acid lithium, and the concentration of the lithium salts is respectively 12%
With 0.5%；Film for additive is 1,3- propane sultones, and the mass percent for accounting for electrolyte gross mass is 1%；Overcharge addition
Agent cyclohexyl benzene, the mass percent for accounting for electrolyte gross mass is 0.5%；Extreme-pressure additiveThe mass percent for accounting for electrolyte gross mass respectively is 0.5% and 0.5%.
Experimental result
The electrolyte that comparative example and embodiment are obtained is injected into the LiNi of same batch0.5Mn1.5O4And LiCoPO4Standard is held
Measure in the aluminum-shell battery for 1Ah, test the cycle performance and security performance of 4.85V and 4.90V of the battery in the case of normal temperature.
LiNi prepared by comparative example and all embodiment electrolyte0.5Mn1.5O4Battery normal temperature circulation and safety under 4.85V
The Data Comparison of test is as shown in table 1.
Table 1
| 4.85V normal temperature circulation 150Z conservation rates | 3C10V is overcharged | 4.85V acupunctures | 4.85V is extruded | |
| Comparative example 1 | 52Z batteries are scrapped | It is on fire from explosion | It is on fire from explosion | It is on fire from explosion |
| Comparative example 2 | 97Z batteries are scrapped | Smolder | It is on fire from explosion | Smolder |
| Embodiment 1 | 26.45% | Smolder | Smolder | Smolder |
| Embodiment 2 | 18.81% | Smolder | Smolder | Safety |
| Embodiment 3 | 20.56% | Smolder | Smolder | Safety |
| Embodiment 4 | 28.73% | Safety | Safety | Safety |
| Embodiment 5 | 29.05% | Safety | Safety | Safety |
| Embodiment 6 | 41.14% | Safety | Safety | Safety |
| Embodiment 7 | 43.82% | Safety | Safety | Safety |
| Embodiment 8 | 52.79% | Safety | Safety | Safety |
| Embodiment 9 | 66.07% | Safety | Safety | Safety |
| Embodiment 10 | 65.22% | Safety | Safety | Safety |
From above table, embodiments of the invention are all substantially excellent in the high pressure resistant circulation of normal temperature and safety test
In comparative example.
LiCoPO prepared by comparative example and all embodiment electrolyte4Battery normal temperature circulation and safety test under 4.90V
Data Comparison such as table 2.
Table 2
From above table, embodiments of the invention are all substantially excellent in the high pressure resistant circulation of normal temperature and safety test
In comparative example.
The above embodiments merely illustrate the technical concept and features of the present invention, its object is to allow person skilled in the art
Scholar will appreciate that present disclosure and implement according to this that it is not intended to limit the scope of the present invention, all according to the present invention
The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.
Claims (10)
1. a kind of high-voltage electrolyte, including nonaqueous solvents, lithium salts and additive, it is characterised in that：Described additive includes resistance to
High pressure additive, described extreme-pressure additive includes one or more in five member ring heterocyclic compound and/or hexa-member heterocycle
One or more in compound, the general structure of described five member ring heterocyclic compound is：Described is hexa-atomic miscellaneous
The general structure of cycle compound is：
Wherein, X group is selected from S, O, NR3In any one；Y group is selected from N or CR4；Z group is selected from N or CR5；A1Selected from N or
CR3；A2Selected from N or CR4；A3Selected from N or CR5；A4Selected from N or CR6；R1、R2、R3、R4、R5、R6Independently selected from H, hydroxyl, benzene
Base, alkyl, amino, containing oxyalkyl, containing halogenalkyl, phenyl containing halogen, nitro, halogen, cyano group,In any one, Ra, Rb independently selected from H, hydroxyl, phenyl, amino, carbon number be 1
It 1~6 containing oxyalkyl, carbon number is 1~6 containing halogenalkyl, phenyl containing halogen, nitre that~6 alkyl, carbon number are
Any one in base, halogen, cyano group.
2. high-voltage electrolyte according to claim 1, it is characterised in that：Described extreme-pressure additive is selected from following knot
One or more in structure formula：
3. high-voltage electrolyte according to claim 2, it is characterised in that：Described extreme-pressure additive is selected from following knot
One or more in structure formula：
4. high-voltage electrolyte according to claim 1, it is characterised in that：Described nonaqueous solvents is selected from carbonic ester, carboxylic
The mixed solvent of one or more in acid esters, ether, fluoro carbonic ester, alpha-fluorocarboxylate ester, fluoro-ether.
5. high-voltage electrolyte according to claim 1, it is characterised in that：Described lithium salts is selected from lithium hexafluoro phosphate, four
Lithium fluoroborate, di-oxalate lithium borate, difluorine oxalic acid boracic acid lithium, two (trimethyl fluoride sulfonyl) imine lithiums, double fluorine sulfimide lithiums, three
A kind of or several mixture in methyl fluoride Sulfonic Lithium.
6. high-voltage electrolyte according to claim 1, it is characterised in that：Described additive also includes film for additive,
Described film for additive is selected from vinylene carbonate, fluorinated ethylene carbonate, ethylene carbonate vinylene, 1,3- propane sulphurs
The mixing of one or more in acid lactone, Isosorbide-5-Nitrae-butane sultones, difluoroethylene carbonate, 1,3 propene sultones,
The addition of described film for additive accounts for the 0.5%~8% of described high-voltage electrolyte gross mass.
7. high-voltage electrolyte according to claim 1, it is characterised in that：Described additive also includes anti-overcharge addition
Agent, described anti-overcharge additive is selected from biphenyl, cyclohexyl benzene, methyl phenyl ethers anisole, linear alkylbenzene (LAB), alkoxy benzene, fluorobenzene, alkane
The mixing of one or more in epoxide fluorobenzene, it is total that the addition of described anti-overcharge additive accounts for described high-voltage electrolyte
The 0.1%~5% of quality.
8. high-voltage electrolyte according to claim 1, it is characterised in that：The addition of described extreme-pressure additive accounts for institute
The 0.1%~10% of the high-voltage electrolyte gross mass stated.
9. high-voltage electrolyte according to any one of claim 1 to 8, it is characterised in that：The addition of described additive
Amount accounts for the 0.7%~23% of described high-voltage electrolyte gross mass, and the addition of described nonaqueous solvents accounts for described high-tension electricity
The 70%~95% of solution liquid gross mass, the addition of described lithium salts accounts for the 3%~18% of described high-voltage electrolyte gross mass.
10. a kind of lithium ion battery, it is characterised in that：The electrolyte of described lithium ion battery is any in claim 1 to 9
High-voltage electrolyte described in, described positive electrode active materials are xLi2MO3·(1-x)LiM’O2、LiNi0.5Mn1.5O4、
LiCoPO4、LiNiPO4In one or more, wherein, M is Mn, Ti or Zr, and M ' is Mn, Ni, Co, and x is the number between 0~1.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635166A (en) * | 2018-06-21 | 2019-12-31 | 比亚迪股份有限公司 | Electrolyte, battery containing electrolyte and electric vehicle |
| CN111540952A (en) * | 2020-05-12 | 2020-08-14 | 上海纳米技术及应用国家工程研究中心有限公司 | High-voltage electrolyte for improving high-temperature storage performance of lithium ion battery |
| CN113140791A (en) * | 2021-03-19 | 2021-07-20 | 复旦大学 | Pyrazine electrolyte of lithium-air battery |
| CN114447427A (en) * | 2020-10-30 | 2022-05-06 | 张家港市国泰华荣化工新材料有限公司 | Non-aqueous electrolyte and lithium battery |
| CN114447428A (en) * | 2020-10-30 | 2022-05-06 | 张家港市国泰华荣化工新材料有限公司 | Non-aqueous electrolyte and lithium battery |
| CN116675650A (en) * | 2023-08-03 | 2023-09-01 | 蓝固(淄博)新能源科技有限公司 | Lithium ion battery electrolyte additive, lithium ion battery electrolyte and lithium ion battery |
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