CN106887642A - A kind of safe aquo-lithium ion battery electrolyte solution and preparation method thereof - Google Patents
A kind of safe aquo-lithium ion battery electrolyte solution and preparation method thereof Download PDFInfo
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- CN106887642A CN106887642A CN201710131475.8A CN201710131475A CN106887642A CN 106887642 A CN106887642 A CN 106887642A CN 201710131475 A CN201710131475 A CN 201710131475A CN 106887642 A CN106887642 A CN 106887642A
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- Prior art keywords
- ion battery
- lithium ion
- safe
- aquo
- electrolyte solution
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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
- H01M10/056—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
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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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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The present invention discloses a kind of safe aquo-lithium ion battery electrolyte solution, by the lithium salts LiBETI of the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is obtained in being dissolved into aqueous solvent simultaneously.A kind of concentration of safe aquo-lithium ion battery electrolyte solution has reached 29m, and LiBETI is 22m, LiOT5It is 7m.Through experiment, the voltage of 2.4 3.7 volt equal with the commercial li-ion battery of use organic solvent can be restrained oneself using the lithium ion battery of the safe water system electrolyte solution, and it is also equipped with greatly shortening the time than the lithium ion battery of commercial type, realizes quick charge, electric discharge（6 minutes）Advantage.The safe aquo-lithium ion battery electrolyte solution can solve the inflammable and explosive safety issue of the long-standing electrolyte of lithium ion battery.
Description
Technical field
The invention belongs to Electrochemical Engineering and process unit field, belong to lithium ion battery electrolyte aspect, more specifically
It is to be related to a kind of safe aquo-lithium ion battery electrolyte solution and preparation method thereof, for cobalt nickel lithium manganate ternary material
（NCM）, LiFePO4（LFP）Deng the lithium ion battery for positive pole.
Background technology
Lithium ion battery is extensive as that can store electric energy and the when necessary light-duty high-performance battery of release electric energy
Be applied to the accumulating system in the articles for daily use such as hand-held terminal and multi industries field, current lithium battery progressively to it is electronic from
The fields such as driving, electric automobile are expanded.The electrolyte that current lithium ion battery is used all adds special organic solvent, organic
Solvent is not only inflammable, fire hazardous and explosion accident, also toxic, it is worrying can be to human body and environment when there is accident
Produce harmful effect.
The content of the invention
The technical problem to be solved in the present invention is：It is organic molten that the electrolyte for overcoming existing lithium ion battery to use is used
Agent is inflammable, explosive, poisonous, the low defect of security, there is provided a kind of safe aquo-lithium ion battery electrolyte solution and its preparation
Method, the safety issue inflammable, explosive, poisonous to solve the long-standing electrolyte of lithium ion battery.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme：A kind of safe aquo-lithium ion battery electricity
Electrolyte solution, by the lithium salts LiBETI of the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is dissolved into water-soluble simultaneously
Obtained in agent.
The further restriction of above-mentioned technical proposal is, a kind of safe aquo-lithium ion battery electrolyte solution it is dense
Degree has reached 29m.
The further restriction of above-mentioned technical proposal is, in a kind of safe aquo-lithium ion battery electrolyte solution
LiBETI is 22m, LiOTfIt is 7m.
In order to solve the above-mentioned technical problem, the present invention proposes following technical scheme：A kind of safe aquo-lithium ion battery electricity
The preparation method of electrolyte solution, the lithium salts LiBETI of the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is simultaneously
It is dissolved into aqueous solvent and can be prepared by.
Beneficial effects of the present invention：
1st, why the liquid based on water is not suitable as the electrolyte solution of lithium ion battery because water generally pressurizes
Hydrogen and oxygen can be resolved into during to 1.2 volts.But a kind of safe aquo-lithium ion battery electrolyte solution of the present invention is unique
Double lithium salts water system electrolyte solutions, can restrain oneself and be lied prostrate using the equal 2.4-3.7 of commercial li-ion battery of organic solvent
Voltage, and be also equipped with greatly shortening the time than the lithium ion battery of commercial type, realize quick charge, electric discharge（6 points
Clock）Advantage.
2nd, compared to organic electrolyte solution, aqueous electrolyte solution is nonflammable, safe and reliable, and environmental protection has more
Application prospect.The present invention is safe, and aquo-lithium ion battery electrolyte solution can solve the long-standing electrolyte of lithium ion battery
Inflammable and explosive safety issue.
3rd, the present invention can greatly speed up opening for the large-scale battery of electric automobile and family expenses that requires security and low price
Hair, and for the power system in IoT epoch brings major transformation.
Brief description of the drawings
Fig. 1 is with cobalt nickel lithium manganate ternary material that lithium ion is to electrode（NCM）In the electrolysis of safe aquo-lithium ion battery
Typical charging and discharging curve in matter solution.
Fig. 2 is with LiFePO4 that lithium ion is to electrode（LFP）Material is in safe aquo-lithium ion battery electrolyte solution
In cycle performance.
Specific embodiment
The present invention proposes a kind of safe aquo-lithium ion battery electrolyte solution, by the lithium salts LiBETI of the crystallization water
（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is dissolved into aqueous solvent simultaneously, forms double lithium salts water systems electricity of uniqueness
Electrolyte solution（It is defined as WIBS）, the concentration of double lithium salts electrolyte greatly improved, reach 29m（Wherein LiBETI is 22m,
LiOTfIt is 7m）.
A kind of preparation method of above-mentioned safe aquo-lithium ion battery electrolyte solution is exactly the lithium salts the crystallization water
LiBETI（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio can be prepared by being dissolved into aqueous solvent simultaneously.
Embodiment 1
By the lithium salts LiBETI containing the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is dissolved into aqueous solvent simultaneously
In, double lithium salts water system electrolyte solutions of uniqueness are formd, it is defined as WIBS.Double lithium salts water system electrolyte solutions of the uniqueness,
The concentration of double lithium salts electrolyte greatly improved, 29m has been reached, wherein LiBETI is 22m, LiOTfIt is 7m.Obtain the present invention
A kind of safe aquo-lithium ion battery electrolyte solution WIBS, using WIBS as electrolyte assemble NCM/WIBS/C-TiO2Lithium
Ionic structure battery, wherein NCM cobalt nickel lithium manganate ternary materials are positive pole, C-TiO2It is carbon（Graphite）The titanium dioxide of cladding is
Negative pole, WIBS is electrolyte.
Embodiment 2
By the lithium salts LiBETI containing the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is dissolved into aqueous solvent simultaneously
In, double lithium salts water system electrolyte solutions of uniqueness are formd, it is defined as WIBS.Double lithium salts water system electrolyte solutions of the uniqueness,
The concentration of double lithium salts electrolyte greatly improved, 29m has been reached, wherein LiBETI is 22m, LiOTfIt is 7m.Obtain the present invention
A kind of safe aquo-lithium ion battery electrolyte solution WIBS, using WIBS as electrolyte assemble LFP/WIBS/C-TiO2Lithium
Ionic structure battery, wherein LFP LiFePO 4 materials are positive pole, C-TiO2It is carbon（Graphite）The titanium dioxide of cladding is negative pole,
WIBS is electrolyte.
The effect of above example：It is molten that above-mentioned technical process prepares a kind of safe aquo-lithium ion battery electrolyte
Liquid, by being assembled into NCM/WIBS/C-TiO2And LFP/WIBS/C-TiO2Deng lithium ion structure battery, through experiment test, this
A kind of safe aquo-lithium ion battery electrolyte solution of invention can be restrained oneself and the commercial li-ion battery using organic solvent
The voltage of equal 3.2 volts, and be also equipped with greatly shortening the time than the lithium ion battery of commercial type, realization is quickly filled
Electricity, electric discharge（6 minutes）Advantage.
The significant role of above example：Above-mentioned technical process prepares a kind of safe aquo-lithium ion battery electrolyte
Solution, can solve the inflammable and explosive safety issue of the long-standing electrolyte of lithium ion battery.
The stability of above example：It is molten that above-mentioned technical process prepares a kind of safe aquo-lithium ion battery electrolyte
Liquid, by being assembled into NCM/WIBS/C-TiO2And LFP/WIBS/C-TiO2Deng lithium ion structure battery, through experiment test, this
A kind of safe aquo-lithium ion battery electrolyte solution of invention can significantly improve lithium ion battery specific discharge capacity, reach
500mAh/g, and keep 95% coulombic efficiency high and the long-term cycle stability of 1200 times.
Claims (4)
1. a kind of safe aquo-lithium ion battery electrolyte solution, it is characterised in that its by the crystallization water lithium salts LiBETI
（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is obtained in being dissolved into aqueous solvent simultaneously.
2. a kind of safe aquo-lithium ion battery electrolyte solution according to claim 1, it is characterised in that the safety
The concentration of aquo-lithium ion battery electrolyte solution has reached 29m.
3. a kind of safe aquo-lithium ion battery electrolyte solution according to claim 2, it is characterised in that the safety
LiBETI is 22m, LiOT in aquo-lithium ion battery electrolyte solutionfIt is 7m.
4. the preparation method of a kind of a kind of safe aquo-lithium ion battery electrolyte solution according to claim 1,2 or 3,
Characterized in that, the lithium salts LiBETI of the crystallization water（H2O）2.0With anhydrous lithium salts LiOTfWith 3:1 mol ratio is dissolved into water simultaneously
Be can be prepared by solvent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710131475.8A CN106887642A (en) | 2017-03-07 | 2017-03-07 | A kind of safe aquo-lithium ion battery electrolyte solution and preparation method thereof |
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| CN201710131475.8A CN106887642A (en) | 2017-03-07 | 2017-03-07 | A kind of safe aquo-lithium ion battery electrolyte solution and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172911A (en) * | 2018-01-11 | 2018-06-15 | 武汉大学 | A kind of full vanadium Water-soluble lithium ion battery |
| CN108183268A (en) * | 2017-12-29 | 2018-06-19 | 深圳市希顺有机硅科技有限公司 | A kind of water base lithium battery of safety anti-explosive fire prevention |
| CN110945708A (en) * | 2017-09-15 | 2020-03-31 | 株式会社Lg化学 | Aqueous electrolyte and energy storage device including the same |
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| CN102055029A (en) * | 2010-12-17 | 2011-05-11 | 复旦大学 | High-safety aqueous and organic mixed lithium ion battery |
| CN102629686A (en) * | 2012-03-29 | 2012-08-08 | 郑州大学 | Electrode material of drainage rechargeable and dischargeable lithium ion and aqueous solution rechargeable and dischargeable lithium ion battery |
| CN104362392A (en) * | 2009-12-09 | 2015-02-18 | 丰田自动车株式会社 | Battery |
-
2017
- 2017-03-07 CN CN201710131475.8A patent/CN106887642A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362392A (en) * | 2009-12-09 | 2015-02-18 | 丰田自动车株式会社 | Battery |
| CN102055029A (en) * | 2010-12-17 | 2011-05-11 | 复旦大学 | High-safety aqueous and organic mixed lithium ion battery |
| CN102629686A (en) * | 2012-03-29 | 2012-08-08 | 郑州大学 | Electrode material of drainage rechargeable and dischargeable lithium ion and aqueous solution rechargeable and dischargeable lithium ion battery |
Non-Patent Citations (3)
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| LIUMIN SU, ET AL.: ""Advanced High-Voltage Aqueous Lithium-Ion Battery Enabled by"Water-in-Bisalt" Electrolyte"", 《ANGEW. CHEM. INT. ED.》 * |
| MICHAEL S. DING,ET AL.: ""Conductivity, Viscosity, and Their Correlation of a Super-Concentrated Aqueous Electrolyte"", 《J. PHYS. CHEM. C》 * |
| YUKI YAMADA, ET AL.: ""Hydrate-melt electrolytes for high-energy-density aqueous batteries"", 《NATURE ENERGY》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110945708A (en) * | 2017-09-15 | 2020-03-31 | 株式会社Lg化学 | Aqueous electrolyte and energy storage device including the same |
| CN108183268A (en) * | 2017-12-29 | 2018-06-19 | 深圳市希顺有机硅科技有限公司 | A kind of water base lithium battery of safety anti-explosive fire prevention |
| CN108172911A (en) * | 2018-01-11 | 2018-06-15 | 武汉大学 | A kind of full vanadium Water-soluble lithium ion battery |
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Application publication date: 20170623 |