CN105140567A - High-voltage electrolyte for lithium-ion battery and preparation method for high-voltage electrolyte - Google Patents
High-voltage electrolyte for lithium-ion battery and preparation method for high-voltage electrolyte Download PDFInfo
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- CN105140567A CN105140567A CN201510463777.6A CN201510463777A CN105140567A CN 105140567 A CN105140567 A CN 105140567A CN 201510463777 A CN201510463777 A CN 201510463777A CN 105140567 A CN105140567 A CN 105140567A
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- ion battery
- lithium
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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
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
-
- 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
Abstract
The invention relates to high-voltage electrolyte for a lithium-ion battery and a preparation method for the high-voltage electrolyte. The electrolyte comprises an organic solvent, conductive lithium salts and a functional additive; the organic solvent comprises a cyclic carbonate solvent and a line-type carbonic ester solvent; and the functional additive comprises oxalic acid boric acid chelate lithium salts and fluoro cyclic carbonate. According to the preparation method for the high-voltage electrolyte for the lithium-ion battery, the preparation method is simple, the raw materials are inexpensive and easy to obtain, the interface properties of the positive electrode and the negative electrode of the battery can be improved at the same time, and the obtained electrolyte is high in stability; the high-voltage lithium ion battery prepared from the high-voltage lithium ion battery electrolyte is long in battery cycle life, low in gas expansion rate and good in high-temperature performance; and the work voltage of the battery can reach higher than 4.9V.
Description
(1) technical field
The invention belongs to field of lithium ion battery, be specifically related to a kind of high-voltage electrolyte for lithium ion battery and preparation method thereof.
(2) background technology
Lithium ion battery, as one of current main-stream energy accumulating device, is widely applied in the electronic product such as communication tool, notebook computer.Along with the development of the progress of science and technology, particularly EV (electric automobile), HEV (hybrid vehicle), need the lithium ion battery of more high-energy-density.The preparation method of positive electrode as spinel nickel LiMn2O4, rich lithium manganese material of current high working voltage is ripe, but, conventional organic electrolyte easily decomposes under high voltages, thus result in the deterioration of high-voltage lithium ion batteries performance, and then have impact on the application of high-voltage anode material and high-voltage lithium ion batteries.Therefore develop high-voltage electrolyte and become problem urgent at present.
Chinese patent CN102683749A discloses " a kind of nonaqueous electrolytic solution of high-voltage lithium ion batteries ", and adopt fluorinated solvents to substitute conventional carbonate-based solvent, the volume ratio of fluorinated solvents is 7 ~ 100%.Chinese patent CN104282939A discloses " a kind of high voltage electrolyte of lithium ion battery ", adopts fluorinated ethylene carbonate, three fluoropropylene carbonates and hydrogen fluorine ether composition mixed solvent, lithium hexafluoro phosphate and di-oxalate lithium borate composition mixing lithium salts.Above patent all improves the cycle performance of lithium ion battery under high voltage, but owing to using fluoroester to make solution viscosity very large in a large number, the low overall performance that have impact on battery of conductivity.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, provide a kind of high-voltage electrolyte for lithium ion battery and preparation method thereof, main purpose solves lithium-ion battery electrolytes the problem such as easily to decompose when high voltage (particularly more than 4.5V), has extended cycle life, good high temperature performance electrolyte under providing a kind of condition of high voltage.
The present invention is achieved through the following technical solutions:
For a high-voltage electrolyte for lithium ion battery, its special character is: described electrolyte by organic solvent, electric conducting lithium salt and functional additive three part form.
Described organic solvent is by cyclic carbonate solvents and linear carbonate solvent composition; Described functional additive is made up of oxalic acid boric acid chelate lithium salts and fluoric cyclic carbonate.
The more excellent scheme of the present invention is:
In described high voltage electrolyte of lithium ion battery, electric conducting lithium salt concentration is in organic solvent 0.8 ~ 1.5mol/L, more optimizedly 1.0 ~ 1.2mol/L, and this concentration can ensure that electrolyte has higher conductivity.
In described high voltage electrolyte of lithium ion battery, fluoric cyclic carbonate is at least one in fluorinated ethylene carbonate (FEC), fluoropropylene carbonate (FPC), trifluoromethyl ethylene carbonate (TFEC).Fluorinated ethylene carbonate (FEC) because how its molecular proportion ethylene carbonate (EC) is containing 1-F key, and has higher electronegativity and stronger electron-withdrawing power, and oxidation resistance is stronger.
Described high voltage electrolyte of lithium ion battery mesoxalic acid boric acid chelate lithium salts is at least one in di-oxalate lithium borate (LiBOB), two propionic acid lithium borate (LiBMB).Di-oxalate lithium borate in battery plus-negative plate film forming, can reduce electrolyte and contacts with positive active material, the HF suppressing fluoric cyclic carbonate to produce in cyclic process and the reaction of positive electrode
In described high voltage electrolyte of lithium ion battery, cyclic carbonate solvents is at least one in ethylene carbonate (EC), propylene carbonate (PC), gamma-butyrolacton and gamma-valerolactone.
In described high voltage electrolyte of lithium ion battery, line style carbonate solvent is at least one in (DMC), methyl ethyl carbonate (EMC), diethyl carbonate (DEC) and methyl propyl carbonate (MPC).
In described high voltage electrolyte of lithium ion battery, electric conducting lithium salt is LiPF
6, LiBF
4, LiSO
3cF
3, LiClO
4, Li (SO
2f) N, Li (CF
3sO
2)
2n and LiC (CF
3sO
2)
3in at least one.
Described functional additive comprises oxalic acid boric acid chelating lithium salts and fluoric cyclic carbonate, and the mass fraction of its mesoxalic acid boric acid chelating lithium salts is 0.05 ~ 2%, and the mass fraction of fluoric cyclic carbonate is 0.5 ~ 10%.
Described oxalic acid boric acid chelating lithium salts is at least one in di-oxalate lithium borate, two propionic acid lithium borate.
Described fluoric cyclic carbonate is at least one in fluorinated ethylene carbonate, fluoropropylene carbonate, trifluoromethyl ethylene carbonate.
The preparation method of above-mentioned high voltage electrolyte of lithium ion battery, comprises the following steps: by cyclic carbonate solvents and linear carbonate solvent purification removal of impurities, dewater; Then be less than 0.1ppm in moisture, under oxygen content is less than 1ppm inert atmosphere, organic solvent mixed; Under room temperature, electric conducting lithium salt is dissolved in organic solvent, and stir; Finally add functional additive, obtain described high voltage electrolyte of lithium ion battery.
The present invention has the following advantages and beneficial effect:
(1) high-voltage lithium-ion battery electrolyte preparation method of the present invention is simple, and raw material is cheaply easy to get, and can improve the interfacial property of anode and negative pole, having good stability of electrolyte simultaneously.
(2) high-voltage lithium ion batteries that high-voltage lithium-ion battery electrolyte of the present invention is obtained has extended cycle life, inflatable rate low and high temperature is functional, and battery operating voltage can higher than 4.9V.
(4) accompanying drawing explanation
Accompanying drawing 1 is embodiment 2 and comparative example 1 battery capacity resolution chart.
(5) embodiment
The consumption percentage of the functional additive described in the present invention all with the gross mass of high-voltage lithium-ion battery electrolyte for benchmark.
Embodiment 1
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of di-oxalate lithium borate (LiBOB) is 0.05%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.Positive active material adopts LiNi
0.5mn
1.5o
4, be LiNi in mass ratio
0.5mn
1.5o
4: conductive agent (SP): binding agent (PVDF)=9:0.5:0.5, mix, add a certain amount of NMP and make anode sizing agent, through coating, compressing tablet, point cut into positive plate, with lithium sheet for negative pole, inject the electrolyte that embodiment 1 is prepared, in glove box, be assembled into button cell, test after leaving standstill 8h, charge-discharge performance test adopts LANDIAN tester, measuring current multiplying power is 1C, and charging/discharging voltage is 3.0V-4.9v.
Embodiment 2
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of di-oxalate lithium borate (LiBOB) is 2%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.1mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 3
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), dimethyl carbonate (DMC); Wherein the mass ratio of EC and DMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 3%; The mass fraction of di-oxalate lithium borate (LiBOB) is 1%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 4
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), diethyl carbonate (DEC); Wherein the mass ratio of EC and DEC is 3:7, and the mass fraction of fluoropropylene carbonate (FPC) is 0.5%; The mass fraction of di-oxalate lithium borate (LiBOB) is 0.2%; Described electric conducting lithium salt is LiClO
4, its concentration is in organic solvent 1.2mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 5
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 10%; The mass fraction of di-oxalate lithium borate (LiBOB) is 0.5%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 6
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of propene carbonate (PC), methyl propyl carbonate (MPC); Wherein the mass ratio of PC and MPC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of two propionic acid lithium borate (LiBMB) is 0.05%; Described electric conducting lithium salt is LiBF
4, its concentration is in organic solvent 0.8mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 7
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of gamma-butyrolacton (γ-BL), dimethyl carbonate (DMC); Wherein the mass ratio of γ-BL, DMC is 3:7, and fluorinated ethylene carbonate (FEC) mass fraction is 1%, and the mass fraction of trifluoromethyl ethylene carbonate (TFEC) is 4%; The mass fraction of two propionic acid lithium borate (LiBMB) is 1%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.5mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 8
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of gamma-valerolactone (γ-GL), methyl ethyl carbonate (EMC); Wherein the mass ratio of γ-GL, EMC is 3:7, and the mass fraction of fluoropropylene carbonate (FPC) is 1%, the mass fraction of trifluoromethyl ethylene carbonate (TFEC) is 4%; The mass fraction of two propionic acid lithium borate (LiBMB) is 2%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 0.9mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 9
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of di-oxalate lithium borate (LiBOB) is 0.2%; Described electric conducting lithium salt is Li (CF
3sO
2)
2n, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 10
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of propene carbonate (PC), dimethyl carbonate (DMC); Wherein the mass ratio of PC and DMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of two propionic acid lithium borate (LiBMB) is 0.2%; Described electric conducting lithium salt is Li (FSO
2)
2n, its concentration is in organic solvent 0.8mol/L.The assembling of described battery is similar to embodiment 1.
Embodiment 11
A kind of high voltage electrolyte of lithium ion battery, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), dimethyl carbonate (DMC); Wherein the mass ratio of EC and DMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 5%; The mass fraction of di-oxalate lithium borate (LiBOB) is 0.5%; Described electric conducting lithium salt is LiSO
3cF
3, its concentration is in organic solvent 0.8mol/L.The assembling of described battery is similar to embodiment 1.
Comparative example 1
A kind of high-voltage lithium-ion battery electrolyte, consists predominantly of machine solvent, electric conducting lithium salt; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Comparative example 2
A kind of high-voltage lithium-ion battery electrolyte, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of fluorinated ethylene carbonate (FEC) is 10%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Comparative example 3
A kind of high-voltage lithium-ion battery electrolyte, consists predominantly of machine solvent, electric conducting lithium salt and functional additive; Described organic solvent is made up of ethylene carbonate (EC), methyl ethyl carbonate (EMC); Wherein the mass ratio of EC and EMC is 3:7, and the mass fraction of di-oxalate lithium borate (LiBOB) is 0.5%; Described electric conducting lithium salt is LiPF
6, its concentration is in organic solvent 1.0mol/L.The assembling of described battery is similar to embodiment 1.
Below for embodiment 1 ~ 5 gained high-voltage lithium-ion battery electrolyte and comparative example electrolyte, set forth the present invention and to grit one's teeth the performance advantage of electrolyte.
Table 1 embodiment 1 ~ 5 gained high-voltage lithium-ion battery electrolyte and comparative example electrolyte test result
| Embodiment | Lithium salts | Organic solvent | Additive | Circulate 100 weeks capability retentions (%) |
| 1 | LiPF 6 | EC+EMC | 5%FEC、0.05%LiBOB | 92.4 |
| 2 | LiPF 6 | EC+EMC | 5%FEC、0.2%LiBOB | 98.9 |
| 3 | LiPF 6 | EC+DMC | 3%FEC、1.0%LiBOB | 98.2 |
| 4 | LiClO 4 | EC+DEC | 0.5%FPC、0.2%LiBOB | 95.7 |
| 5 | LiPF 6 | EC+EMC | 10%FEC、0.5%LiBOB | 95.3 |
| 6 | LiBF 4 | PC+MPC | 5%FEC、0.5%LiBMB | 89.2 |
| 7 | LiPF 6 | γ-BL +DMC | 1%FEC、4%TFEC、1%LiBMB | 92.1 |
| 8 | LiPF 6 | γ-GL+EMC | 1%FPC、4%TFEC、2%LiBMB | 87.7 |
| 9 | Li(CF 3SO 2) 2N | EC+EMC | 5%FEC、0.2%LiBOB | 90.5 |
| 10 | Li(FSO 2) 2N | PC+DMC | 5%FEC、0.2%LiBMB | 98.3 |
| 11 | LiSO 3CF 3 | EC+DMC | 5%FEC、0.5%LiBOB | 85.4 |
| Comparative example 1 | LiPF 6 | EC+EMC | 0 | 37.4 |
| Comparative example 2 | LiPF 6 | EC+EMC | 10%FEC | 76.2 |
| Comparative example 3 | LiPF 6 | EC+EMC | 0.5%LiBOB | 74.7 |
From upper table test result, high-voltage electrolyte of the present invention not easily decomposes, thus improves lithium ion battery cycle performance under high pressure, simultaneously less on the impact of lithium ion battery.
The above is only the preferred embodiment of the present invention; be not restricted to the present invention; for those skilled in the art; under the premise without departing from the principles of the invention; can also make some changes, modification, substitute, combine, simplify, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1., for a high-voltage electrolyte for lithium ion battery, it is characterized in that: described electrolyte by organic solvent, electric conducting lithium salt and functional additive three part form.
2. the high-voltage electrolyte for lithium ion battery according to claim 1, it is characterized in that: described organic solvent is by cyclic carbonate solvents and linear carbonate solvent composition, and cyclic carbonate solvents is at least one in ethylene carbonate, propene carbonate, gamma-butyrolacton and gamma-valerolactone; Linear carbonate solvent is at least one in dimethyl carbonate, methyl ethyl carbonate, diethyl carbonate, methyl propyl carbonate.
3. the high-voltage electrolyte for lithium ion battery according to claim 2, is characterized in that: cyclic carbonate and linear carbonate mass ratio are 3:7.
4. the high-voltage electrolyte for lithium ion battery according to claim 1, is characterized in that: described electric conducting lithium salt concentration is in organic solvent 0.8 ~ 1.5mol/L.
5. the high-voltage electrolyte for lithium ion battery according to claim 4, is characterized in that: described electric conducting lithium salt concentration is in organic solvent 1.0 ~ 1.2mol/L.
6. the high-voltage electrolyte for lithium ion battery according to claim 1 or 4 or 5, is characterized in that: described electric conducting lithium salt is LiPF
6, LiBF
4, LiClO
4, LiSO
3cF
3, Li (SO
2f) N and Li (CF
3sO
2)
2at least one in N.
7. the high-voltage electrolyte for lithium ion battery according to claim 1, it is characterized in that: described functional additive comprises oxalic acid boric acid chelating lithium salts and fluoric cyclic carbonate, the mass fraction of its mesoxalic acid boric acid chelating lithium salts is 0.05 ~ 2%, and the mass fraction of fluoric cyclic carbonate is 0.5 ~ 10%.
8. the high-voltage electrolyte for lithium ion battery according to claim 7, is characterized in that: described oxalic acid boric acid chelating lithium salts is at least one in di-oxalate lithium borate, two propionic acid lithium borate.
9. the high-voltage electrolyte for lithium ion battery according to claim 7, is characterized in that: described fluoric cyclic carbonate is at least one in fluorinated ethylene carbonate, fluoropropylene carbonate, trifluoromethyl ethylene carbonate.
10. a preparation method for the high-voltage electrolyte for lithium ion battery according to claim 2, is characterized in that: comprise the following steps: by cyclic carbonate solvents and linear carbonate solvent purification removal of impurities, dewater; Then be less than 0.1ppm in moisture, under oxygen content is less than 1ppm inert atmosphere, organic solvent mixed; Under room temperature, electric conducting lithium salt is dissolved in organic solvent, and stir; Finally add functional additive, obtain described high voltage electrolyte of lithium ion battery.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107093766A (en) * | 2017-04-28 | 2017-08-25 | 中国工程物理研究院电子工程研究所 | A kind of lithium-ion battery electrolytes |
| CN107221707A (en) * | 2017-06-12 | 2017-09-29 | 百川化工(如皋)有限公司 | A kind of ferromanganese lithium low-temperature electrolyte and preparation method thereof |
| CN107978794A (en) * | 2017-12-01 | 2018-05-01 | 广东天劲新能源科技股份有限公司 | The lithium battery electric core of ternary lithium battery electrolytes and high temperature resistant high power capacity high safety |
| CN110247117A (en) * | 2018-03-10 | 2019-09-17 | 中山天贸电池有限公司 | A kind of electrolyte improving soft bag lithium ionic cell high-temperature behavior |
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| CN104051786A (en) * | 2014-06-24 | 2014-09-17 | 东莞市凯欣电池材料有限公司 | Electrolyte, preparation method for same and high-voltage lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107093766A (en) * | 2017-04-28 | 2017-08-25 | 中国工程物理研究院电子工程研究所 | A kind of lithium-ion battery electrolytes |
| CN107093766B (en) * | 2017-04-28 | 2020-01-14 | 中国工程物理研究院电子工程研究所 | Lithium ion battery electrolyte |
| CN107221707A (en) * | 2017-06-12 | 2017-09-29 | 百川化工(如皋)有限公司 | A kind of ferromanganese lithium low-temperature electrolyte and preparation method thereof |
| CN107978794A (en) * | 2017-12-01 | 2018-05-01 | 广东天劲新能源科技股份有限公司 | The lithium battery electric core of ternary lithium battery electrolytes and high temperature resistant high power capacity high safety |
| CN110247117A (en) * | 2018-03-10 | 2019-09-17 | 中山天贸电池有限公司 | A kind of electrolyte improving soft bag lithium ionic cell high-temperature behavior |
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Application publication date: 20151209 |