CN109546223A - A kind of warm width electrolyte of the width of lithium ion battery - Google Patents
A kind of warm width electrolyte of the width of lithium ion battery Download PDFInfo
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- CN109546223A CN109546223A CN201811518559.8A CN201811518559A CN109546223A CN 109546223 A CN109546223 A CN 109546223A CN 201811518559 A CN201811518559 A CN 201811518559A CN 109546223 A CN109546223 A CN 109546223A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—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
- H01M10/0568—Liquid materials characterised by the solutes
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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 invention discloses a kind of warm width electrolyte of the width of lithium ion battery comprising electrolytic salt and organic solvent, electrolytic salt includes bis- (pinacolyl) borate lithiums, shown in general structure following (I):In logical formula (I), R1~R8It is respectively and independently selected from hydrogen atom, halogen atom, C substituted or unsubstituted1~6Alkyl, C substituted or unsubstituted1~6Alkene, C substituted or unsubstituted1~6Alkoxy, sulfonyl, sulfone, C substituted or unsubstituted6~C20Aryl.Electrolyte provided by the invention has the characteristics that fusing point is low, viscosity is low, conductivity is high, thermal stability is high and chemical stability is high；Moreover, the electrolyte low temperature discharge knee voltage is high, discharge platform is high, capacity is high, and there is good high temperature storage capacity retention ratio and recovery rate.
Description
Technical field
The invention belongs to field of lithium ion battery, are related to a kind of warm width electrolyte of width of lithium ion battery.
Background technique
Lithium ion battery because its high-energy density, high power, long circulating, it is environmentally protective the advantages that, it is digital and new in 3C
It is used widely in energy field of traffic.But lithium ion battery is influenced by electrolyte property, and there are low temperature performances not
Foot, the poor problem of thermal stability under high temperature self discharge and high temperature seriously constrain its development.Therefore, exploitation one is still needed to
Kind lithium-ion battery electrolytes, the performance of Lai Gaishan lithium ion battery.
The widest electrolytic salt of lithium ion battery applications is lithium hexafluoro phosphate at present.Lithium hexafluoro phosphate fluorine atom radius
Small, anion radius is big, and lattice energy is low, has good conductivity and electrochemically stable in carbonate group electrolyte system
Property.But lithium hexafluoro phosphate thermal stability is poor, decomposes at 80 DEG C and generates HF, to moisture-sensitive, meets water and is extremely easy in decomposition, unsuitable long-term
Storage, and the SEI membrane impedance generated under low temperature is big, cryogenic property is general.Currently used organic solvent system is mostly carbonic ester
Class and carboxylic acid esters, viscosity sharply increases carbonates at low temperature, and conductivity reduces, and influences cryogenic property.Carboxylate coagulates
Solid point is very low, low temperature performance excellent, but carboxylate influences cycle performance, and is easy to produce gas under high temperature, limits its use.
Bis- (pinacolyl) borate lithium salts have good chemical stability, and the electrochemical window of some compounds reaches 5V.
Structurally, it can make the charge on B obtain high degree of dispersion with strong electron-withdrawing group group, high conductivity ensure that.Due to
Negative electrical charge on B is by 8 oxygen atom high degree of dispersion of surrounding, and solubility is bigger in organic solvent.It is in addition bis- that (where is frequency
Base) borate lithium salts has very high thermal stability, and thermal decomposition temperature reaches 300 DEG C.Fluoro chain carboxylic acid ester molecule has
Asymmetry can effectively improve the dielectric constant of organic solvent, increase the conductivity of electrolyte.Due to the strong electrophilic energy of fluorine
Power can preferentially form stable SEI film in negative terminal surface, inhibit the total insertion of solvent, improve cycle performance.But bis- (where is frequency
Base) borate lithium salts the shortcomings that there are its own, it generates serious corrosivity to plus plate current-collecting body aluminium foil under high potential, leads
Aluminum foil current collector is caused Process occur, pole powder is fallen, and aluminium foil is exposed, influences the security performance of lithium ion battery.
Therefore, it needs to research and develop a kind of electrolyte with high thermal stability, high chemical stability, to be effectively improved battery
Low temperature discharge ability and high temperature storage ability, improve the security performance of lithium ion battery.
Summary of the invention
The object of the present invention is to provide a kind of warm width electrolyte of the width of lithium ion battery, to widen the use of lithium ion battery
Temperature range；By the formula of improvement electrolyte, it is effectively improved the low temperature discharge ability and high temperature energy-storage stability of battery, with
Achieve the purpose that widen lithium ion battery temperature use scope.
To achieve the above object, the present invention provides a kind of warm width electrolyte of width of lithium ion battery, including electrolytic salt and
Organic solvent, wherein the electrolytic salt includes bis- (pinacolyl) borate lithiums, wherein bis- (pinacolyl) borate lithiums
Shown in general structure following (I):
In logical formula (I), R1~R8It is respectively and independently selected from hydrogen atom, halogen atom, C substituted or unsubstituted1~6Alkyl, substitution
Or unsubstituted C1~6Alkene, C substituted or unsubstituted1~6Alkoxy, sulfonyl, sulfone, C substituted or unsubstituted6~C20Aryl.
Preferably, R1~R8It is respectively and independently selected from fluorine atom, fluoro C1~3Alkyl, C6~7Fluorinated aryl.
Preferably, bis- (pinacolyl) borate lithiums are selected from any one or more in following compound (Ia)-(Ie)
Combination:
Preferably, the organic solvent includes: fluoro chain carboxylic acid esters solvent, following (II) institute of general structure
Show:
In logical formula (II), R9~R11It is respectively and independently selected from hydrogen atom, halogen atom, C substituted or unsubstituted1~6Alkyl, sulphonyl
Base, sulfone, C substituted or unsubstituted6~C20Aryl；R12Selected from C substituted or unsubstituted1-10Alkyl, C substituted or unsubstituted6~C20Virtue
Base, C substituted or unsubstituted1~10Alkylene, C substituted or unsubstituted1~10Alkynes base；And R9~R12In contain at least one substituent group
There is F.
Preferably, in logical formula (II), R9~R11It is respectively and independently selected from hydrogen atom, halogen atom, fluoro C1~3Alkyl, C6~7
Aryl or fluorinated aryl；, R12Selected from fluoro or unsubstituted C1~6Alkyl, C6~7Aryl or fluorinated aryl.
Preferably, the fluoro chain carboxylic acid esters solvent is any one in following compound (IIa)-(IIe)
Kind or a variety of combinations:
Preferably, the organic solvent also includes chain or cyclic carbonate.
Preferably, the volume ratio of chain or cyclic carbonate and fluoro chain carboxylic acid esters is VFluoro chain carboxylate:
VRing-type-carbonic ester: VChain-carbonic ester=(5~30): (10~85): (10~85).Preferably, the chain or cyclic carbonate and fluoro
Its volume ratio of chain carboxylic acid esters is VFluoro chain carboxylate: VRing-type-carbonic ester: VChain-carbonic ester=(5~30): (10~85): (10~85), into one
Step is preferably VFluoro chain carboxylate: VEthylene carbonate: VMethyl ethyl carbonate: VDimethyl carbonate=(10~30): (10~70): (10~70): (10~70).
Preferably, the chain or cyclic carbonate select ethylene carbonate, methyl ethyl carbonate and dimethyl carbonate
One or more combinations.
Preferably, the electrolytic salt also includes other lithium salts: lithium perchlorate (LiClO4), hexafluoroarsenate lithium
(LiAsF6), LiBF4 (LiBF4), Polyfluoroalkyl Sulfonic Lithium (LiRfSO3), lithium hexafluoro phosphate (LiPF6), two (polyfluoro alkane
Base sulfonyl) imine lithium [LiN (RfSO2)2], two (polyfluoroalkoxy sulfonyl) imine lithium [LiN (RfOSO2)2], two (oxalic acid
Close) borate lithium (LiBOB), two (polyfluoro pinacolyl) Aluminate lithium { LiAl [OCH (Rf)2]4One or more combinations, into
One step is preferably lithium hexafluoro phosphate (LiPF6) and two (trifluoromethyl sulfonyl) imine lithiums one or two kinds of combinations.
The present invention will be bis- (pinacolyl) borate lithium salts and lithium perchlorate, hexafluoroarsenate lithium, LiBF4, Polyfluoroalkyl
Sulfonic Lithium, lithium hexafluoro phosphate, two (Polyfluoroalkyl sulfonyl) imine lithiums, two (polyfluoroalkoxy sulfonyl) imine lithiums, two (oxalic acid
Close) borate lithium, any one or more combination in two (polyfluoro pinacolyl) Aluminate lithiums, using other lithium salts to aluminium foil
Passivation effect solves the problems, such as bis- (pinacolyl) borate lithium salts under high voltages to aluminium foil corrosion.
Preferably, the total moles quality of the electrolytic salt is 0.3~2.0mol/L；Further preferred 0.8~
1.7mol/L。
Preferably, in the electrolytic salt, the molal weight ratio of bis- (pinacolyl) borate lithiums and other lithium salts is
nBis- (pinacolyl) borate lithiums: nOther lithium salts=(1~5): (1~10).Further preferably nBis- (pinacolyl) borate lithiums: nLithium hexafluoro phosphate: bis- (trifluoromethyl of n
Sulfonyl) imine lithium=(1~5): (1~5): (1~5).
The attainable technical effect of the present invention includes following aspect, but not limited to this:
Bis- (pinacolyl) borate lithium salts that the present invention selects have good chemical stability, and oxidizing potential is high.From knot
It is seen on structure, with strong electron-withdrawing group group, the charge on B can be made to obtain high degree of dispersion, and oxygen on lithium ion and borate
It is weaker between atom to be combined into structure, it ensure that high conductivity.Since the negative electrical charge on B is by 8 oxygen atom height of surrounding
Degree dispersion, solubility is bigger in organic solvent.In addition bis- (pinacolyl) borate lithium salts decomposition temperatures are high, have good
Thermal stability.In addition to this, currently preferred fluoro chain carboxylic acid ester molecule has asymmetry, can effectively improve organic
The dielectric constant of solvent increases the conductivity of electrolyte, due to the strong electron-withdrawing ability of fluorine, can preferentially be formed in negative terminal surface
Stable SEI film inhibits the total insertion of solvent, improves cycle performance.
Using the height of electrolyte thermal stability made of the present invention, chemical stability is high, viscosity is low, conductivity is high, can be effective
Improve the low temperature discharge ability and high temperature storage ability of battery, to achieve the purpose that widen lithium ion battery temperature use scope.
Detailed description of the invention
Fig. 1 is various embodiments of the present invention and comparative example 0.5C discharge voltage-Capacity Plan at -20 DEG C of low temperature.
Fig. 2 is that the present invention embodiment and comparative example store 30 days capacity retention ratio scatter plots at 80 DEG C of high temperature.
Specific embodiment
The invention will be further described with embodiment and comparative example with reference to the accompanying drawing.
Comparative example 1
The preparation of electrolyte: organic solvent is ethylene carbonate (EC), methyl ethyl carbonate (EMC), dimethyl carbonate
(DMC), the mixed liquor of ethyl acetate (EA), wherein the volume ratio V of each componentEC: VEMC: VDMC: VEA=36:18:36:10, electricity
Solving matter salt is lithium hexafluoro phosphate and two (trifluoromethyl sulfonyl) imine lithiums, and total moles quality is 1mol/L, and molal weight ratio is
nLithium hexafluoro phosphate: n bis- (trifluoromethyl sulfonyl) is sub-Amine lithium=5:1.
Comparative example 2
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate, volume ratio VEC:
VEMC: VDMC=2:1:2, electrolytic salt are lithium hexafluoro phosphate and bis- (perfluor pinacolyl) borate lithiums, and total moles quality is
1.2mol/L, molal weight ratio are nLithium hexafluoro phosphate: nBis- (perfluor pinacolyl) borate lithiums=2:3.
Comparative example 3
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate, volume ratio VEC:
VEMC: VDMC=2:3:5, electrolytic salt are lithium hexafluoro phosphate, molal weight 1.2mol/L.
Embodiment 1
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate and Trifluoroacetic Acid Ethyl Ester
(3F-EA), volume ratio VEC: VEMC: VDMC: V3F-EA=18:27:35:20, electrolytic salt are lithium hexafluoro phosphate, two (trifluoromethyls
Sulfonyl) imine lithium and bis- (perfluor pinacolyl) borate lithiums, total moles quality is 1mol/L, and molal weight ratio is nLithium hexafluoro phosphate: n
Two (trifluoromethyl sulfonyl) imine lithiums: nBis- (perfluor pinacolyl) borate lithiums=5:1:1.
Embodiment 2
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate and perfluor phenylacetic acid benzene
Methyl esters, volume ratio VEC: VEMC: VDMC: VPerfluor phenylacetic acid benzene methyl=36:18:36:10, electrolytic salt are lithium hexafluoro phosphate, two (fluoroforms
Base sulfonyl) imine lithium and bis- (perfluor pinacolyl) borate lithiums, total moles quality is 1mol/L, and molal weight ratio is
nLithium hexafluoro phosphate: n bis- (trifluoromethyl sulfonyl) imine lithium: nBis- (perfluor pinacolyl) borate lithiums=2:5:3.
Embodiment 3
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate and trifluoroacetic acid second
Ester, volume ratio VEC: VEMC: VDMC: V3F- EA=18:27:35:20, electrolytic salt are lithium hexafluoro phosphate, two (trifluoromethyl sulphurs
Acyl group) imine lithium and bis- (perfluor pinacolyl) borate lithiums, total moles quality is 1.4mol/L, and molal weight ratio is nLithium hexafluoro phosphate: n
Two (trifluoromethyl sulfonyl) imine lithiums: nBis- (perfluor pinacolyl) borate lithiums=2:5:3.
Embodiment 4
The preparation of electrolyte: organic solvent is ethylene carbonate, methyl ethyl carbonate, dimethyl carbonate and Perfluoroneopentane acid
Ethyl ester, volume ratio VEC: VEMC: VDMC: VPerfluoroneopentane acetoacetic ester=36:18:36:10, electrolytic salt are lithium hexafluoro phosphate, two (fluoroforms
Base sulfonyl) imine lithium and bis- (perfluor pinacolyl) borate lithiums, total moles quality is 1.2mol/L, and molal weight ratio is
nLithium hexafluoro phosphate: n bis- (trifluoromethyl sulfonyl) imine lithium: nBis- (perfluor pinacolyl) borate lithiums=2:3:5.
The preparation of lithium ion battery
By positive active material (LiNi1/3Co1/3Mn1/3O2), conductive agent (SP), binder (PVDF) is with 95:2.5:2.5
Mass ratio mixing, and add solvent (N- methyl pyrrole network alkanone), slurry be applied to plus plate current-collecting body aluminium foil after being stirred
On, re-dry rolls, and positive plate is made in punching.
By negative electrode active material graphite, conductive agent (SP), binder butadiene-styrene rubber (SBR) and dispersing agent carboxymethyl cellulose
(CMC) with the mixing of 95:1:2.5:1.5 mass ratio, slurry is applied on negative current collector copper foil after being stirred, does by addition water
It is dry, it rolls, is punched, negative electrode tab is made.
After positive and negative anodes pole piece and isolation film are assembled into lithium battery according to certain technique in stacking machine, above-mentioned comparison is injected
The electrolyte of example and embodiment, is prepared into 18650 lithium-ion battery with steel shell of 2Ah.
The constant-voltage charge after constant-current charge to 4.2V at normal temperature of lithium ion battery made from the above various embodiments and comparative example
To 40mA.8h is stored under -20 DEG C of low temperature, then with 0.5C current discharge to 2.2V, measured voltage-capacity curve graph is shown in figure
1.It can be seen from figure 1 that embodiment 1, embodiment 2, embodiment 3 compare comparative example 1, comparative example 2 and comparative example 3 with embodiment 4
Lithium ion battery low temperature electricity knee voltage is high, and discharge platform is high, and the capacity of releasing is big, low temperature performance well.
Lithium ion battery made from the above various embodiments and comparative example first does the calibration of 0.5C discharge capacity at normal temperature, then permanent
Constant-voltage charge is to 40mA after current charge to 4.2V.It is stored 30 days under 80 DEG C of high temperature, after battery recovery to room temperature, with 0.5C electric current
Constant-current discharge to 2.7V, measured capacity obtains capacity retention ratio divided by initial capacity, and scatter plot is shown in Fig. 2.Wherein, capacity
Conservation rate (%)=(0.5C discharge capacity under 0.5C discharge capacity/initial room temperature after storage) * 100.
As seen from Figure 1, Figure 2, embodiment 1, embodiment 2, embodiment 3 and embodiment 4 compare comparative example 1, comparative example 2 and right
The high-temperature lithium ion battery memory capacity conservation rate of ratio 3 is high, and self discharge is small, and battery is more stable under hot environment.
In conclusion the present invention is effectively improved the low temperature discharge ability and height of battery by the formula of improvement electrolyte
Warm energy storage stability, to achieve the purpose that widen lithium ion battery temperature use scope.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of warm width electrolyte of the width of lithium ion battery, including electrolytic salt and organic solvent, which is characterized in that the electricity
Solving matter salt includes bis- (pinacolyl) borate lithiums, wherein shown in the general structure of bis- (pinacolyl) borate lithiums following (I):
In logical formula (I), R1~R8It is respectively and independently selected from hydrogen atom, halogen atom, C substituted or unsubstituted1~6Alkyl, substitution do not take
For C1~6Alkene, C substituted or unsubstituted1~6Alkoxy, sulfonyl, sulfone, C substituted or unsubstituted6~C20Aryl.
2. the warm width electrolyte of the width of lithium ion battery as described in claim 1, which is characterized in that R1~R8It is respectively and independently selected from
Fluorine atom, fluoro C1~3Alkyl, C6~7Fluorinated aryl.
3. the warm width electrolyte of the width of lithium ion battery as described in claim 1, which is characterized in that bis- (pinacolyl) borate lithiums
The combination of any one or more in following compound (Ia)-(Ie):
4. the warm width electrolyte of the width of lithium ion battery as described in claim 1, which is characterized in that the organic solvent packet
Contain: fluoro chain carboxylic acid esters solvent, shown in general structure following (II):
In logical formula (II), R9~R11It is respectively and independently selected from hydrogen atom, halogen atom, C substituted or unsubstituted1~6Alkyl, sulfonyl,
Sulfone, C substituted or unsubstituted6~C20Aryl；R12Selected from C substituted or unsubstituted1-10Alkyl, C substituted or unsubstituted6~C20Aryl,
C substituted or unsubstituted1~10Alkylene, C substituted or unsubstituted1~10Alkynes base；And R9~R12In contain at least one substituent group
F。
5. the warm width electrolyte of the width of lithium ion battery as claimed in claim 4, which is characterized in that in logical formula (II), R9~R11
It is respectively and independently selected from hydrogen atom, halogen atom, fluoro C1~3Alkyl, C6~7Aryl or fluorinated aryl；, R12It does not take selected from fluoro or
For C1~6Alkyl, C6~7Aryl or fluorinated aryl.
6. the warm width electrolyte of the width of lithium ion battery as claimed in claim 4, which is characterized in that described in logical formula (II)
Fluoro chain carboxylic acid esters solvent is selected from the combination of any one or more in following compound (IIa)-(IIe):
7. the warm width electrolyte of the width of lithium ion battery as claimed in claim 4, which is characterized in that the organic solvent also wraps
Containing chain or cyclic carbonate solvents, wherein fluoro chain carboxylic acid esters solvent and linear carbonate, cyclic carbonate solvents
Volume ratio is VFluoro chain carboxylate: VRing-type-carbonic ester: VChain-carbonic ester=(5~30): (10~85): (10~85).
8. the warm width electrolyte of the width of lithium ion battery as claimed in claim 7, which is characterized in that the chain or cyclic annular carbon
Acid esters selects any one or more combination in ethylene carbonate, methyl ethyl carbonate and dimethyl carbonate.
9. the warm width electrolyte of the width of lithium ion battery as described in claim 1, which is characterized in that the electrolytic salt also wraps
Containing other lithium salts, other lithium salts are selected from: lithium perchlorate, hexafluoroarsenate lithium, LiBF4, Polyfluoroalkyl Sulfonic Lithium, hexafluoro phosphorus
Sour lithium, two (Polyfluoroalkyl sulfonyl) imine lithiums, two (polyfluoroalkoxy sulfonyl) imine lithiums, two (oxalic acid conjunction) borate lithiums,
Any one or more combination in two (polyfluoro pinacolyl) Aluminate lithiums.
10. the warm width electrolyte of the width of lithium ion battery as claimed in claim 9, which is characterized in that the electrolytic salt
Total moles quality is 0.3~2.0mol/L；Wherein, the molal weight ratio of bis- (pinacolyl) borate lithiums and other lithium salts is
nBis- (pinacolyl) borate lithiums: nOther lithium salts=(1~5): (1~10).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010969A (en) * | 2019-04-11 | 2019-07-12 | 湖南工学院 | A kind of wide temperature lithium-ion battery electrolytes of high voltage and preparation method thereof |
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| CN106532120A (en) * | 2016-12-19 | 2017-03-22 | 广州天赐高新材料股份有限公司 | Non-aqueous electrolyte and lithium secondary battery of using same |
| CN107808981A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院宁波材料技术与工程研究所 | Electrolyte and lithium ion battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101197456A (en) * | 2006-12-07 | 2008-06-11 | 索尼株式会社 | Electrolytic solution and battery |
| CN107808981A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院宁波材料技术与工程研究所 | Electrolyte and lithium ion battery |
| CN106532120A (en) * | 2016-12-19 | 2017-03-22 | 广州天赐高新材料股份有限公司 | Non-aqueous electrolyte and lithium secondary battery of using same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110010969A (en) * | 2019-04-11 | 2019-07-12 | 湖南工学院 | A kind of wide temperature lithium-ion battery electrolytes of high voltage and preparation method thereof |
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