CN107195971A - A kind of low form lithium battery electrolytes and preparation method thereof - Google Patents
A kind of low form lithium battery electrolytes and preparation method thereof Download PDFInfo
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- CN107195971A CN107195971A CN201710293087.XA CN201710293087A CN107195971A CN 107195971 A CN107195971 A CN 107195971A CN 201710293087 A CN201710293087 A CN 201710293087A CN 107195971 A CN107195971 A CN 107195971A
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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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- 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
- H01M10/056—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
- H01M10/058—Construction or manufacture
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a kind of low form lithium battery electrolytes and preparation method thereof, belong to lithium battery material technical field.The present invention is made up of lithium salts, double solvents and additive；The lithium salts is at least one of inorganic lithium salt, lithium salts of sulfonimide；The double solvents is the double solvents of carboxylic acid esters solvent and carbonate-based solvent；The additive is sulfurous esters compound and/or fluorinated ethylene carbonate；The quality of the additive accounts for 1% the 15% of electrolyte.Temperature when present invention is by adjusting lithium salts species and concentration, the species of double solvents, the species of additive and concentration and lithium salts addition etc., the cryogenic property of electrolyte is greatly improved, electrolyte of the invention still shows preferably to put a capability retention at 40 DEG C.
Description
Technical field
The present invention relates to lithium battery material technical field, more particularly to a kind of low form lithium battery electrolytes and its preparation side
Method.
Background technology
Lithium ion battery has that voltage is high, specific energy is big because of it, discharge and recharge long lifespan, safety and environmental protection the features such as, as just
Take the first choice of formula power supply and electrokinetic cell.It is main to the rigors of lithium ion battery in some Aeronautics and Astronautics and military field
It is embodied in cryogenic property, cycle performance and security, and the composition of electrolyte is to determine one of key factor of these performances.
The general use of electrolyte can dissolve the non-aqueous organic ester of lithium salts.Ethylene carbonate (EC), dimethyl carbonate
(DMC), diethyl carbonate (DEC), propene carbonate (PC), methyl ethyl carbonate (EMC) etc. are widely used at present in lithium ion
Organic solvent in electrolyte.
Publication No. CN101017918A Chinese invention patent discloses a kind of lithium ion battery of energy ultra-low temperature discharge
Electrolyte, its electrolyte mixed using lithium hexafluoro phosphate, LiBF4 and solvent, solvent include ethylene carbonate,
Dimethyl carbonate, methyl ethyl carbonate, dimethoxy-ethane.The electrolyte improves the low temperature of lithium ion battery to a certain extent
Performance, but its discharge performance under -40 DEG C of low temperature environments is still poor.
Electrolyte plays a part of conducting lithium ions between the positive and negative electrode of battery, is lithium battery high voltage, high specific energy
Ensure, it is the key factor for determining the performances such as battery life, safety, multiplying power, high temperature and low temperature that it, which is constituted,.
Single solvent is rarely fulfilled that the requirement of electrolyte, current commercial lithium-ion batteries electrolyte it is main by binary or
The EC base electrolyte of ternary system composition.During the first charge-discharge of battery, EC can be formed in negative terminal surface reduction decomposition
SEI (solid electrolyte boundary) film of electrode surface is covered in, prevents electrolyte from further decomposing and is collapsed with negative material structure
Collapse.But, be solid under normal temperature because EC fusing points are higher, cause lithium ion battery cryogenic property using EC base electrolyte compared with
Difference.
The content of the invention
In order to make up the deficiencies in the prior art, the problem of lithium battery electrolytes low temperature properties are poor in the prior art, this hair are solved
It is bright to provide a kind of low form lithium battery electrolytes and preparation method thereof.
The technical scheme is that：
A kind of low form lithium battery electrolytes, are made up of lithium salts, double solvents and additive；The lithium salts is inorganic lithium salt, sulphur
At least one of acid imide lithium salts；The double solvents is the double solvents of carboxylic acid esters solvent and carbonate-based solvent；
The additive is sulfurous esters compound and/or fluorinated ethylene carbonate；The quality of the additive accounts for the 1%- of electrolyte
15%。
Preferably, the concentration of the inorganic lithium salt is 1-1.6mol/L, the concentration of the lithium salts of sulfonimide
For 0.1-0.5mol/L.The optimal lithium salt scope is obtained by lot of experiments and interpretation of result contrast, in the scope
Interior low-temperature resistance is minimum；Excessive concentration causes electrolyte conductibility to be deteriorated because of viscosity increase.
Preferably, the inorganic lithium salt is difluorophosphate；The lithium salts of sulfonimide is that double fluorine sulphonyl are sub-
Amine lithium.Difluorophosphate improves SEI structures to a certain extent, improves Conductivity at low temperature.Double fluorine sulfimide lithiums have compared with
High conductivity, can further lift battery conductive, improve low temperature internal resistance, and then lift the cryogenic property of lithium battery.
Preferably, the carbonate-based solvent is made up of cyclic carbonate and linear carbonates.
Further, the cyclic carbonate is ethylene carbonate and/or propene carbonate.
Further, the linear carbonates are one kind or many in diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate
Kind.
Further, cyclic carbonate and the mass ratio of linear carbonates are 1:1-4.Cyclic carbonate and linear carbonates
Within the range, electrolyte can be prevented further to decompose the liquid amount that can guarantee that electrolyte again with negative material structural breakdown
Journey, makes contributions for lifting electrolyte cryogenic property.
Preferably, the carboxylate is ethyl acetate.When carboxylate is ethyl acetate, it can increase to greatest extent
The liquid range of electrolyte, to improve the cryogenic property of electrolyte.
The preparation method of the low form lithium battery electrolytes, including step：
1）Carboxylic acid esters solvent and carbonate-based solvent are well mixed, less than 10 DEG C are cooled to；
2）Lithium salts is added under conditions of temperature is not higher than 10 DEG C, and is stirred to lithium salts dissolving；
3）Additive is added, continues to stir to uniform solution is formed, obtains the low form lithium battery electrolytes.
In the inventive method, step 2）Temperature control it is very crucial, temperature be higher than 10 DEG C when add lithium salts, its low temperature properties
It can be deteriorated.
The low temperature lithium battery electrolytes meet following require：Impurity≤0.1% (GC), moisture≤15ppm, heavy metal≤
1ppm, chloride≤1ppm, sulfate≤5ppm, color≤50APHA；Other metal impurities Na, K, Fe, K, Mg etc.≤1ppm.
Beneficial effects of the present invention are：
1st, the lithium salts selected of the present invention is difluorophosphate and/or double fluorine sulfimide lithiums, using difluorophosphate to a certain degree
On improve SEI structures, improve Conductivity at low temperature.Double fluorine sulfimide lithiums have high electrical conductivity, can further be lifted
Battery conductive, improves low temperature internal resistance, and then lift the cryogenic property of lithium battery；
2nd, carboxylate is introduced in solvent, improves the liquid range of electrolyte, help to lift the cryogenic property of lithium battery；
3rd, sulfurous esters compound, fluorinated ethylene carbonate significantly improve electrolyte SEI composition and thickness as additive
Degree so that its resistance is substantially reduced, reaches the requirement of lifting battery cryogenic property.
Temperature when the 4th, being added by controlling lithium salts, improves the cryogenic property of electrolyte.
The present invention is by adjusting lithium salts species and concentration, the species of double solvents, the species of additive and concentration and lithium
Temperature when salt is added etc., is greatly improved the cryogenic property of electrolyte, electrolyte of the invention is still shown at -40 DEG C
Preferably put a capability retention.
Embodiment
Embodiment 1：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is 1.1mol/L）, it is stirred continuously until that solution is clarified, then calculates 5% fluoro of addition according to electrolyte gross mass
Ethylene carbonate, is then sufficiently stirred for, and is transferred to and stores stand-by full of inert gas Packaging Bottle.
Embodiment 2：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is 1.1mol/L）, it is stirred continuously until that solution is clarified, then calculates 1% sulfurous of addition according to electrolyte gross mass
Vinyl acetate, is then sufficiently stirred for, and is transferred to and stores stand-by full of inert gas Packaging Bottle.
Embodiment 3：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, it is stirred continuously until that solution is clarified, then presses
5% fluorinated ethylene carbonate of addition is calculated according to electrolyte gross mass, is then sufficiently stirred for, is transferred to full of the storage of inert gas Packaging Bottle
Deposit stand-by.
Embodiment 4：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, it is stirred continuously until that solution is clarified, then presses
1% ethylene sulfite of addition is calculated according to electrolyte gross mass, is then sufficiently stirred for, is transferred to full of the storage of inert gas Packaging Bottle
It is stand-by.
Embodiment 5：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluorophosphoric acid
Lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, be stirred continuously until solution clarify, then according to
Electrolyte gross mass calculates 1% ethylene sulfite of addition, and 5% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to full of lazy
Property gas packed packaging bottle storage it is stand-by.
Embodiment 6：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, it is stirred continuously until that solution is clarified, then presses
1% ethylene sulfite of addition is calculated according to electrolyte gross mass, 3% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to and is full of
The storage of inert gas Packaging Bottle is stand-by.
Embodiment 7：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, it is stirred continuously until that solution is clarified, then presses
1% ethylene sulfite of addition is calculated according to electrolyte gross mass, 10% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to and fills
Full inert gas Packaging Bottle storage is stand-by.
Embodiment 8：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.3mol/L, double fluorine sulfimide lithium concentrations are 0.3mol/L）, it is stirred continuously until that solution is clarified, then presses
1% ethylene sulfite of addition is calculated according to electrolyte gross mass, 10% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to and fills
Full inert gas Packaging Bottle storage is stand-by.
Embodiment 9：
By dimethyl carbonate（DMC）, propyl acetate, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:35:
20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluorophosphoric acid
Lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, be stirred continuously until solution clarify, then according to
Electrolyte gross mass calculates 1% ethylene sulfite of addition, and 10% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to and is full of
The storage of inert gas Packaging Bottle is stand-by.
Comparative example 1：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 sequentially add container, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Six
Lithium fluophosphate concentration is 1.1mol/L）, it is stirred continuously until that solution is clarified, is then sufficiently stirred for, is transferred to full of inert gas bag
Bottling storage is stand-by.
Comparative example 2：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium salts is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluoro phosphorus
Sour lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, it is stirred continuously until that solution is clarified, then fills
Divide stirring, be transferred to and store stand-by full of inert gas Packaging Bottle.
Comparative example 3：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, and lithium salts is slowly added under normal temperature（Hexafluorophosphoric acid lithium concentration is 1.1mol/L, double fluorine sulfimide lithiums are dense
Spend for 0.1mol/L）, it is stirred continuously until that solution is clarified, then calculates 5% fluoro ethylene of addition according to electrolyte gross mass
Alkene ester, is then sufficiently stirred for, and is transferred to and stores stand-by full of inert gas Packaging Bottle.
Comparative example 4：
By dimethyl carbonate（DMC）, ethyl acetate（EA）, ethylene carbonate（EC）, propene carbonate（PC）According to mass ratio 35:
35:20:10 are sequentially added, when temperature is down to 10 DEG C, and lithium is slowly added in the case of ensureing that temperature is not higher than 10 DEG C（Hexafluorophosphoric acid
Lithium concentration is that 1.1mol/L, double fluorine sulfimide lithium concentrations are 0.1mol/L）, be stirred continuously until solution clarify, then according to
Electrolyte gross mass calculates 1% vinylene carbonate of addition, and 5% fluorinated ethylene carbonate is then sufficiently stirred for, is transferred to full of lazy
Property gas packed packaging bottle storage it is stand-by.
Electrolyte in above-described embodiment 1-7 and 4 comparative examples is carried out to the conductive capability test of different temperatures, data are shown in
Table 1.As seen from Table 1, the present invention prepares low temperature lithium battery electrolytes, can lift the conductive capability under electrolyte low temperature.
In addition, being filled into the cobalt acid that design capacity is 2Ah respectively to above-described embodiment 1-7 and the electrolyte of 4 comparative examples
Lithium soft-package battery, is carried out normal temperature and is tested within 500 weeks with the charge and discharge of 1C multiplying powers, test result such as table 2；And carry out -40 degrees Celsius of low temperature and put
Put 24h discharge tests, test result such as table 3.
By table 2 and table 3 it can be seen that the present invention prepares low temperature lithium battery electrolytes and do not influenceing the feelings of normal-temperature circulating performance
Lithium battery cryogenic property can be obviously improved under condition.
Each embodiment of table 1（S）With comparative example（D）Electrolyte different temperatures under conductive capability test result
Each embodiment of table 2（S）With comparative example（D）Electrolyte loads battery normal temperature with 500 weeks test results of 1C multiplying powers charge and discharge
Each embodiment of table 3（S）With comparative example（D）Electrolyte load -40 DEG C of battery low temperature and shelve 24h Discharge tests
The above described is only a preferred embodiment of the present invention, be not the limitation for making other forms to the present invention, it is any ripe
Know the equivalent reality that professional and technical personnel was changed or be modified as equivalent variations possibly also with the technology contents of the disclosure above
Example is applied applied to other fields, but every without departing from technical solution of the present invention content, according to the present invention technical spirit to
Any simple modification, equivalent variations and remodeling that upper embodiment is made, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of low form lithium battery electrolytes, are made up of lithium salts, double solvents and additive；It is characterized in that：The lithium salts
For at least one of inorganic lithium salt, lithium salts of sulfonimide；The double solvents is that carboxylic acid esters solvent and carbonates are molten
The double solvents of agent；The additive is sulfurous esters compound and/or fluorinated ethylene carbonate；The quality of the additive
Account for the 1%-15% of electrolyte.
2. low form lithium battery electrolytes as claimed in claim 1, it is characterised in that：The concentration of the inorganic lithium salt is 1-
1.6mol/L, the concentration of the lithium salts of sulfonimide is 0.1-0.5mol/L.
3. low form lithium battery electrolytes as claimed in claim 1 or 2, it is characterised in that：The inorganic lithium salt is difluorophosphoric acid
Lithium；The lithium salts of sulfonimide is double fluorine sulfimide lithiums.
4. low form lithium battery electrolytes as claimed in claim 1 or 2, it is characterised in that：The carbonate-based solvent is by ring-type
Carbonic ester and linear carbonates composition.
5. low form lithium battery electrolytes as claimed in claim 4, it is characterised in that：The cyclic carbonate is ethylene carbonate
And/or propene carbonate.
6. low form lithium battery electrolytes as claimed in claim 4, it is characterised in that：The linear carbonates are carbonic acid diethyl
One or more in ester, dimethyl carbonate, methyl ethyl carbonate.
7. low form lithium battery electrolytes as claimed in claim 4, it is characterised in that：The matter of cyclic carbonate and linear carbonates
Amount is than being 1:1-4.
8. low form lithium battery electrolytes as claimed in claim 1 or 2, it is characterised in that：The carboxylate is ethyl acetate.
9. low form lithium battery electrolytes as claimed in claim 1 or 2, it is characterised in that：The additive is sulfurous esters
When compound and fluorinated ethylene carbonate, the mass ratio of sulfurous esters compound and fluorinated ethylene carbonate is 1:3-1:10.
10. the preparation method of low form lithium battery electrolytes as claimed in claim 1, it is characterised in that including step：
1）Carboxylic acid esters solvent and carbonate-based solvent are well mixed, less than 10 DEG C are cooled to；
2）Lithium salts is added under conditions of temperature is not higher than 10 DEG C, and is stirred to lithium salts dissolving；
3）Additive is added, continues to stir to uniform solution is formed, obtains the low form lithium battery electrolytes.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108190879A (en) * | 2017-12-25 | 2018-06-22 | 惠州Tcl金能电池有限公司 | Modified artificial graphite and preparation method thereof and lithium ion battery |
| CN111952584A (en) * | 2020-07-13 | 2020-11-17 | 深圳市秸川材料科技有限公司 | Lithium battery |
| CN112687951A (en) * | 2020-11-24 | 2021-04-20 | 风帆有限责任公司 | Low-temperature-resistant high-voltage type soft package lithium ion battery and preparation method thereof |
| CN113964320A (en) * | 2021-10-15 | 2022-01-21 | 湖北亿纬动力有限公司 | Lithium ion battery and preparation method thereof |
| WO2022032802A1 (en) * | 2020-08-11 | 2022-02-17 | 常州赛得能源科技有限公司 | Low-temperature electrolyte and lithium-ion battery |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840707A (en) * | 2012-07-05 | 2012-12-26 | 能一郎科技股份有限公司 | Freezing method for preparing electrolyte of lithium ion battery |
| CN103943882A (en) * | 2014-03-27 | 2014-07-23 | 北京化学试剂研究所 | Preparation method of lithium battery electrolyte |
| CN103985906A (en) * | 2014-06-06 | 2014-08-13 | 东莞市杉杉电池材料有限公司 | Lithium ion battery electrolyte with both high and low temperature performances |
| CN105990607A (en) * | 2016-06-28 | 2016-10-05 | 华蓥市高科德电子科技有限公司 | Method for preparing lithium-ion battery electrolyte |
| CN106025362A (en) * | 2016-06-28 | 2016-10-12 | 华蓥市高科龙电子科技有限公司 | Low-temperature type lithium-ion battery electrolyte |
| CN106025353A (en) * | 2016-07-08 | 2016-10-12 | 广安奥海通讯电子科技有限公司 | Functional electrolyte for improving charge and discharge efficiency of lithium ion battery |
| CN106159325A (en) * | 2016-08-26 | 2016-11-23 | 中航锂电（洛阳）有限公司 | A kind of low temperature electrolyte for lithium ion battery and low-temperature lithium ion battery |
-
2017
- 2017-04-28 CN CN201710293087.XA patent/CN107195971A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840707A (en) * | 2012-07-05 | 2012-12-26 | 能一郎科技股份有限公司 | Freezing method for preparing electrolyte of lithium ion battery |
| CN103943882A (en) * | 2014-03-27 | 2014-07-23 | 北京化学试剂研究所 | Preparation method of lithium battery electrolyte |
| CN103985906A (en) * | 2014-06-06 | 2014-08-13 | 东莞市杉杉电池材料有限公司 | Lithium ion battery electrolyte with both high and low temperature performances |
| CN105990607A (en) * | 2016-06-28 | 2016-10-05 | 华蓥市高科德电子科技有限公司 | Method for preparing lithium-ion battery electrolyte |
| CN106025362A (en) * | 2016-06-28 | 2016-10-12 | 华蓥市高科龙电子科技有限公司 | Low-temperature type lithium-ion battery electrolyte |
| CN106025353A (en) * | 2016-07-08 | 2016-10-12 | 广安奥海通讯电子科技有限公司 | Functional electrolyte for improving charge and discharge efficiency of lithium ion battery |
| CN106159325A (en) * | 2016-08-26 | 2016-11-23 | 中航锂电（洛阳）有限公司 | A kind of low temperature electrolyte for lithium ion battery and low-temperature lithium ion battery |
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| CN108190879A (en) * | 2017-12-25 | 2018-06-22 | 惠州Tcl金能电池有限公司 | Modified artificial graphite and preparation method thereof and lithium ion battery |
| CN111952584A (en) * | 2020-07-13 | 2020-11-17 | 深圳市秸川材料科技有限公司 | Lithium battery |
| WO2022032802A1 (en) * | 2020-08-11 | 2022-02-17 | 常州赛得能源科技有限公司 | Low-temperature electrolyte and lithium-ion battery |
| CN112687951A (en) * | 2020-11-24 | 2021-04-20 | 风帆有限责任公司 | Low-temperature-resistant high-voltage type soft package lithium ion battery and preparation method thereof |
| CN113964320A (en) * | 2021-10-15 | 2022-01-21 | 湖北亿纬动力有限公司 | Lithium ion battery and preparation method thereof |
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