CN106784994B - Lithium ion battery electrolyte for smart home and battery - Google Patents
Lithium ion battery electrolyte for smart home and battery Download PDFInfo
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- CN106784994B CN106784994B CN201710012326.XA CN201710012326A CN106784994B CN 106784994 B CN106784994 B CN 106784994B CN 201710012326 A CN201710012326 A CN 201710012326A CN 106784994 B CN106784994 B CN 106784994B
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 23
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 33
- 239000000654 additive Substances 0.000 claims abstract description 25
- 230000000996 additive effect Effects 0.000 claims abstract description 25
- 239000002904 solvent Substances 0.000 claims abstract description 23
- -1 Vinyl sulfate ester Chemical class 0.000 claims abstract description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 20
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 19
- 239000011737 fluorine Substances 0.000 claims abstract description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 16
- VEWLDLAARDMXSB-UHFFFAOYSA-N ethenyl sulfate;hydron Chemical compound OS(=O)(=O)OC=C VEWLDLAARDMXSB-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 13
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 13
- 150000005676 cyclic carbonates Chemical class 0.000 claims abstract description 11
- PGYMQGUWHQEYNW-UHFFFAOYSA-N 3-fluoro-1,5,2,4-dioxadithiane 2,2,4,4-tetraoxide Chemical compound FC1S(=O)(=O)OCOS1(=O)=O PGYMQGUWHQEYNW-UHFFFAOYSA-N 0.000 claims abstract description 10
- JHRWWRDRBPCWTF-OLQVQODUSA-N captafol Chemical compound C1C=CC[C@H]2C(=O)N(SC(Cl)(Cl)C(Cl)Cl)C(=O)[C@H]21 JHRWWRDRBPCWTF-OLQVQODUSA-N 0.000 claims abstract description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- CQDGTJPVBWZJAZ-UHFFFAOYSA-N monoethyl carbonate Chemical compound CCOC(O)=O CQDGTJPVBWZJAZ-UHFFFAOYSA-N 0.000 claims description 8
- QJSASPRXSWOLOS-UHFFFAOYSA-N [SH2]=N.[Li] Chemical compound [SH2]=N.[Li] QJSASPRXSWOLOS-UHFFFAOYSA-N 0.000 claims description 3
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 claims description 3
- DFFDSQBEGQFJJU-UHFFFAOYSA-M butyl carbonate Chemical compound CCCCOC([O-])=O DFFDSQBEGQFJJU-UHFFFAOYSA-M 0.000 claims description 2
- 125000001153 fluoro group Chemical group F* 0.000 claims description 2
- FOWDZVNRQHPXDO-UHFFFAOYSA-N propyl hydrogen carbonate Chemical compound CCCOC(O)=O FOWDZVNRQHPXDO-UHFFFAOYSA-N 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims 1
- RVBMCUUUPHHHAP-UHFFFAOYSA-N fluoromethanedisulfonic acid Chemical compound OS(=O)(=O)C(F)S(O)(=O)=O RVBMCUUUPHHHAP-UHFFFAOYSA-N 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 7
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- XWRISGYTPCBGDC-UHFFFAOYSA-N 2,2-difluoropropanedinitrile Chemical compound N#CC(F)(F)C#N XWRISGYTPCBGDC-UHFFFAOYSA-N 0.000 description 4
- UTSYHFRWUGOGJP-UHFFFAOYSA-N 3,3-difluoro-1,5,2,4-dioxadithiane 2,2,4,4-tetraoxide Chemical compound FC1(F)S(=O)(=O)OCOS1(=O)=O UTSYHFRWUGOGJP-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000011267 electrode slurry Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 125000005912 ethyl carbonate group Chemical group 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01M10/056—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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- 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 discloses a long-term storage type lithium ion battery, wherein a negative electrode adopts lithium titanate, an electrolyte comprises a conductive lithium salt, a carbonate solvent and a composite additive, and is characterized in that the concentration of the conductive lithium salt is more than 2mol/L, the carbonate solvent comprises cyclic carbonate, the volume content of the cyclic carbonate accounts for more than 70% of the total volume of the carbonate solvent, the composite additive accounts for 5-10% of the total volume of the carbonate solvent, the volume V proportion relation among methylene fluoromethanedisulfonate, vinyl sulfate and fluorodinitrile is VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid methylene ester>VVinyl sulfate ester+VFluorodinitriles. The battery of the invention has low interface impedance under the condition of long-term storage, can keep high conductivity and prolong the cycle life and improve the long-term storage performance of the battery.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to an electrolyte for a lithium ion battery for smart home.
Background
The intelligent home (English: smart home, home automation) is characterized in that a home is used as a platform, facilities related to home life are integrated by utilizing a comprehensive wiring technology, a network communication technology, a safety precaution technology, an automatic control technology and an audio and video technology, a high-efficiency management system of home facilities and home schedule affairs is constructed, home safety, convenience, comfortableness and artistry are improved, and an environment-friendly and energy-saving living environment is realized.
The existing intelligent home system generally needs to be communicated with an external power supply to work. In many cases, people want to use some functions of the smart home system, such as data reading, signal transceiving, etc., even without an external power source. Therefore, it is necessary to install a battery in the smart home to provide necessary power for basic functions of the smart home, such as data storage, signal transceiving, and the like, without an external power source. The battery used for the smart home is different from the current common battery in demand, the battery is researched in the direction of a low-resistance and high-output power battery at present, the working current of the battery of the smart home is very low, and the battery needs to be capable of bearing long-time storage without influence on capacity, and has higher safety, cyclicity and the like. However, the existing battery cannot meet the requirements of the battery required by smart homes on long-term storage performance and working performance after long-term storage due to the side reaction generated by the contact of the electrode active substance and the electrolyte, or the falling off of the electrode active substance or the dissolution of elements per se.
In view of the above, there is an urgent need to design a new lithium ion battery for smart home systems to overcome the above-mentioned defects of the existing batteries.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a lithium ion battery for smart home. The inventor finds that the storage performance and the cycle life of the battery can be greatly improved on the basis of ensuring that the internal resistance is not increased by adopting the high-concentration lithium salt and the high-proportion cyclic carbonate and adopting the composite additive, and particularly the performance under the high-temperature condition.
The specific scheme is as follows:
the lithium ion battery electrolyte for smart home comprises a conductive lithium salt, a carbonate solvent and a composite additive, and is characterized in that the concentration of the conductive lithium salt is more than 2mol/L, the carbonate solvent comprises cyclic carbonate, the volume content of the cyclic carbonate accounts for more than 70% of the total volume of the carbonate solvent, and the composite additive accounts for 5-10% of the volume percentage of the carbonate solvent in total, wherein the composite additive is prepared from fluorine-containing sulfimide lithium, fluoromethanedisulfonic acid methylene ester, vinyl sulfate and fluorodinitrile, the volume ratio of the fluorine-containing sulfimide lithium to the fluoromethanedisulfonic acid methylene ester to the vinyl sulfate to the fluorodinitrile is 1-1.5: 2-4: 2-4: 0.5 to 1; and the sum of the volumes of the fluorine-containing lithium sulfonimide and the fluorinated dinitrile is not more than 3 percent of the volume of the carbonate solvent; the volume sum of the methylene fluoromethanesulfonate and the vinyl sulfate is not less than 4 percent of the volume percentage of the carbonate solvent, and the volume V proportion relation among the fluorine-containing lithium sulfimide, the methylene fluoromethanesulfonate, the vinyl sulfate and the fluorodinitrile is VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid methylene ester>VVinyl sulfate ester+VFluorodinitriles。
Further, the concentration of the conductive lithium salt is 2-4mol/L.
Further, the carbonate solvent is selected from ethyl carbonate, propyl carbonate, butyl carbonate.
Further, the carbonate solvent also includes linear carbonate.
Further, the volume ratio of the cyclic carbonate to the linear carbonate is 7:3 to 9: 1.
Further, the volume percentage of the composite additive in the carbonate solvent is 6%.
Further, VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid methylene ester= coefficient × (V)Vinyl sulfate ester+VFluorodinitriles) Wherein the coefficient>1.1。
Further, VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid methylene ester= coefficient × (V)Vinyl sulfate ester+VFluorodinitriles) With coefficient = 1.2.
Further, the lithium salt is selected from lithium hexafluorophosphate and lithium tetrafluoroborate.
Further, the lithium ion battery for the smart home comprises the electrolyte, wherein a negative electrode comprises lithium titanate.
The invention has the following beneficial effects:
(1) the high-concentration lithium salt and the high-proportion cyclic carbonate are selected, the cyclic carbonate has good compatibility with an electrode, side reaction is difficult to occur during long-term storage, the high-concentration lithium salt can ensure the conductivity of the electrolyte under the condition of increasing the viscosity of the electrolyte, and the defect of lithium ions in the electrolyte during long-term use can be compensated.
(2) The fluorine-containing lithium sulfimide increases the dissociation capability of positive and negative ions in the electrolyte and improves the conductivity.
(3) By adopting the composite additive in the proportion range, a more compact and stable protective film can be formed on the positive electrode and the negative electrode simultaneously due to the synergistic effect in the additive, the dissolution of metal elements in the active materials of the positive electrode and the negative electrode and the decomposition of electrolyte on the surface of the electrode are inhibited, and high conductivity is kept after long-term storage.
(4) The cathode adopts lithium titanate which has better compatibility with electrolyte and longer cycle life.
Detailed Description
The present invention will be described in more detail below with reference to specific examples, but the scope of the present invention is not limited to these examples.
Example 1
2mol/L of lithium hexafluorophosphate, ethyl carbonate: dimethyl carbonate =7:3, composite additive accounts for 5.5% of carbonate volume, fluorine-containing sulfimide lithium, perfluoromethane disulfonic acid methylene ester, vinyl sulfate, and perfluoromalononitrile =1:2:2:0.5 (volume ratio).
Example 2
Lithium hexafluorophosphate 4mol/L, ethyl carbonate: dimethyl carbonate =9:1, composite additive accounts for 10% of carbonate volume, fluorine-containing sulfimide lithium, perfluoro methane disulfonic acid methylene ester, vinyl sulfate, and perfluoro malononitrile =1.5:4:4:1 (volume ratio).
Example 3
3mol/L of lithium tetrafluoroborate, ethyl carbonate: dimethyl carbonate =8:2, composite additive accounting for 10% of carbonate volume percentage, fluorine-containing sulfimide lithium, perfluoro methane disulfonic acid methylene ester, vinyl sulfate, and perfluoro malononitrile =1.5:4:4:1 (volume ratio).
Comparative example 1
Lithium hexafluorophosphate 1mol/L, ethyl carbonate: dimethyl carbonate =1:1, the additive accounts for 1% of the carbonate volume, and the additive is fluorine-containing lithium sulfonimide.
Comparative example 2:
lithium hexafluorophosphate 1mol/L, ethyl carbonate: dimethyl carbonate =1:1, the additive accounts for 3% of the carbonate volume, and the additive is perfluoromethanedisulfonic acid methylene ester.
Comparative example 3:
lithium hexafluorophosphate 1mol/L, ethyl carbonate: dimethyl carbonate =1:1, the additive accounts for 3% of the carbonate volume, and the additive is vinyl sulfate.
Comparative example 4:
lithium hexafluorophosphate 1mol/L, ethyl carbonate: dimethyl carbonate =1:1, the additive accounts for 1% of the carbonate volume, and the additive is perfluoromalononitrile.
The cells were assembled and tested as described,
and (3) positive electrode: according to the positive electrode active material LiCoO2: conductive carbon black: PVDF =95:2:3, mixing, adding NMP (N-methyl pyrrolidone) serving as a solvent, and mixing to obtain anode slurry; coating the anode on an aluminum foil, and cutting the aluminum foil into pieces to obtain an anode;
negative electrode: according to the following formula: acetylene black: SBR =90:5:5, mixing, adding solvent water, mixing to obtain negative electrode slurry, coating the negative electrode slurry on copper foil, and cutting to obtain a negative electrode;
the diaphragm adopts a PE/PP/PE composite diaphragm,
and (3) laminating and winding the anode, the diaphragm and the cathode, filling the laminated and wound anode, diaphragm and cathode into a shell, injecting electrolyte, forming, vacuumizing and sealing to obtain the battery.
The following table shows test data of examples and comparative examples, wherein the storage temperature is 45 ℃, the circulating current is 0.5C, the charge cut-off voltage is 4.3V, the discharge cut-off voltage is 2.7V, the aging speed of the battery can be accelerated by high-temperature storage, and a room-temperature storage environment for a longer time can be simulated by the high-temperature storage. It can be seen that the battery of the present invention has a significantly improved cycle capacity retention rate after 100 days of high-temperature storage, compared to the battery of the comparative example, although the first charge/discharge efficiency is low and the cycle capacity retention rate is also equivalent to that of the comparative example.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (9)
1. The lithium ion battery electrolyte for smart home comprises conductive lithium salt, a carbonate solvent and a composite additive, and is characterized in that the concentration of the conductive lithium salt is more than 2mol/L, and the carbonate solventThe composite additive comprises cyclic carbonate, the volume content of the cyclic carbonate accounts for more than 70% of the total volume of the carbonate solvent, and the composite additive accounts for 5-10% of the volume percentage of the carbonate solvent in total, wherein the composite additive consists of fluorine-containing sulfimide lithium, fluoromethanedisulfonic acid methylene ester, vinyl sulfate and fluorodinitrile, and the volume ratio of the fluorine-containing sulfimide lithium, the fluoromethanedisulfonic acid methylene ester, the vinyl sulfate and the fluorodinitrile is 1-1.5: 2-4: 2-4: 0.5-1, and the sum of the volumes of the fluorine-containing lithium sulfonimide and the fluoro dinitrile is not more than 3 percent of the volume of the carbonate solvent; the volume sum of the methylene fluoromethanesulfonate and the vinyl sulfate is not less than 4 percent of the volume percentage of the carbonate solvent, and the volume V proportion relation among the fluorine-containing lithium sulfimide, the methylene fluoromethanesulfonate, the vinyl sulfate and the fluorodinitrile is VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid methylene ester= coefficient × (V)Vinyl sulfate ester+VFluorodinitriles) Wherein the coefficient>1.1。
2. The electrolyte of claim 1, wherein the concentration of the conductive lithium salt is 2-4mol/L.
3. The electrolyte of claim 1, the carbonate solvent is selected from the group consisting of ethyl carbonate, propyl carbonate, butyl carbonate.
4. The electrolyte of claim 1, the carbonate solvent further comprising a linear carbonate.
5. The electrolyte of claim 4, wherein the volume ratio of cyclic carbonate to linear carbonate is 7:3 to 9: 1.
6. The electrolyte of claim 1, wherein the combined additive is 6% by volume in the carbonate solvent.
7. The electrolyte of claim 1, VFluorine-containing lithium sulfonimide+VFluoromethanedisulfonic acid sulfinic acidMethyl ester= coefficient × (V)Vinyl sulfate ester+VFluorodinitriles) With coefficient = 1.2.
8. The electrolyte of claim 1, wherein the lithium salt is selected from the group consisting of lithium hexafluorophosphate and lithium tetrafluoroborate.
9. A smart home lithium ion battery comprising the electrolyte of any one of claims 1-8, wherein the negative electrode comprises lithium titanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012326.XA CN106784994B (en) | 2017-01-09 | 2017-01-09 | Lithium ion battery electrolyte for smart home and battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012326.XA CN106784994B (en) | 2017-01-09 | 2017-01-09 | Lithium ion battery electrolyte for smart home and battery |
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| Publication Number | Publication Date |
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| CN106784994A CN106784994A (en) | 2017-05-31 |
| CN106784994B true CN106784994B (en) | 2020-08-18 |
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| CN201710012326.XA Expired - Fee Related CN106784994B (en) | 2017-01-09 | 2017-01-09 | Lithium ion battery electrolyte for smart home and battery |
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| CN108232302A (en) * | 2017-12-30 | 2018-06-29 | 国联汽车动力电池研究院有限责任公司 | A kind of high concentration lithium salt electrolyte suitable for silicon-based anode lithium ion battery |
| CN108321434A (en) * | 2018-03-23 | 2018-07-24 | 安普瑞斯（无锡）有限公司 | A kind of high-voltage lithium-ion battery electrolyte |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412418A (en) * | 2010-09-26 | 2012-04-11 | 比亚迪股份有限公司 | Lithium ion battery electrolyte and lithium ion battery containing same |
| CN105895954A (en) * | 2016-05-05 | 2016-08-24 | 东莞市凯欣电池材料有限公司 | High-stability power battery electrolyte |
| CN106099171A (en) * | 2016-07-13 | 2016-11-09 | 东莞市凯欣电池材料有限公司 | A kind of lithium ion power battery electrolyte and lithium-ion-power cell |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412418A (en) * | 2010-09-26 | 2012-04-11 | 比亚迪股份有限公司 | Lithium ion battery electrolyte and lithium ion battery containing same |
| CN105895954A (en) * | 2016-05-05 | 2016-08-24 | 东莞市凯欣电池材料有限公司 | High-stability power battery electrolyte |
| CN106099171A (en) * | 2016-07-13 | 2016-11-09 | 东莞市凯欣电池材料有限公司 | A kind of lithium ion power battery electrolyte and lithium-ion-power cell |
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