CN105591157A - Electrolyte for high-voltage battery - Google Patents
Electrolyte for high-voltage battery Download PDFInfo
- Publication number
- CN105591157A CN105591157A CN201610156472.5A CN201610156472A CN105591157A CN 105591157 A CN105591157 A CN 105591157A CN 201610156472 A CN201610156472 A CN 201610156472A CN 105591157 A CN105591157 A CN 105591157A
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- CN
- China
- Prior art keywords
- electrolyte
- voltage battery
- additive
- battery according
- nonaqueous solvents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses electrolyte for a high-voltage battery. The electrolyte is prepared from, by weight, 80-90% of non-aqueous solvent, 9.5-15% of lithium salt and 0.5-5% of an additive, wherein the additive is a mixture of pyridine derivatives and fluorine boron compounds with the mass ratio being (1-9): (9-1). The electrolyte for the high-voltage battery can prolong the circulating service life of the high-voltage battery.
Description
Technical field
The invention belongs to technical field of lithium ion, relate in particular to a kind of electrolyte for high-voltage battery.
Background technology
Than lead-acid battery, nickel-hydrogen/nickel-cadmium battery, lithium ion battery has that energy density is high, self-discharge rateLow, advantages of environment protection, start large-scale application in recent years in new-energy automobile, electricity storage station field. MakeCan improve the voltage of integral battery door with high-tension positive electrode, realize the increase of energy content of battery storage density.A lot of high-voltage anode materials are reported at present, as cobalt phosphate lithium, nickel LiMn2O4, rich lithium transition-metalOxides etc. can be realized the above voltage charge and discharge cycles of 4.5V. But the electrolyte of industrialization at present cannotMeet the requirement of high-voltage battery. The more ripe electrolyte taking carbonates as solvent can more than 4.5VOxidized decomposition, and then discharge and recharge chemical system in destruction battery, cause battery life seriously to shorten.
Summary of the invention
The object of this invention is to provide a kind of electrolyte for high-voltage battery.
The present invention is achieved through the following technical solutions above-mentioned purpose:
For an electrolyte for high-voltage battery, by weight percentage, comprise the nonaqueous solvents of 80%-90%,The lithium salts of 9.5%-15% and the additive of 0.5-5%, described additive is that mass ratio is (1-9): (9-1)The mixture of pyridine derivatives and fluorine boron compound.
Further, described nonaqueous solvents is carbonates solvent.
Further, described nonaqueous solvents is ethylene carbonate, propene carbonate, dimethyl carbonate, carbonic acidAny two or more combination in diethylester, methyl ethyl carbonate.
Further, described lithium salts is LiPF6、LiPF4、LiClO4、LiBOB、LiN(CF3SO2)2In appointMeaning is a kind of.
Further, the concentration of described lithium salts in described nonaqueous solvents is 0.8M-1.3M.
Further, described additive is the mixture of pyridine and boron trifluoride.
Compared with prior art, the invention has the beneficial effects as follows: of the present invention a kind of for high-voltage batteryElectrolyte, by increasing additive, can improve the service life cycle of high-voltage battery.
Brief description of the drawings
Fig. 1 is the charge and discharge cycles design sketch of the embodiment of the present invention.
Detailed description of the invention
Embodiment:
A kind of electrolyte for high-voltage battery of the present embodiment, by weight percentage, comprises 3% addAdd agent, additive is that mass ratio is the pyridine of 1:1 and the mixture of boron trifluoride. Also comprise nonaqueous solvents andLithium salts, wherein nonaqueous solvents is that mass ratio is ethylene carbonate and the dimethyl carbonate of 3:7, lithium salts is non-Concentration in aqueous solvent is the LiPF of 1.0M6。
The not additivated electrolyte of mark is A, and the electrolyte that adds additive is B. By A, two kinds of electricity of BSeparate liquid and be injected into just very LiNi0.5Mn1.5O4, the aluminum hull 26800 type cylindrical batteries that negative pole is Delanium (characterizeCapacity 4.4Ah), in 3.5-4.8V voltage range, carry out 1C charge and discharge cycles. As shown in Figure 1, makeWith discharge capacitance after the circulating battery of A electrolyte 100 times be 50% left and right, and use B electrolyteAfter circulating battery 100 times, discharge capacitance reaches more than 90%. Thus, the one of the present embodiment is for highThe electrolyte of voltage battery, by increasing additive, can improve the service life cycle of high-voltage battery.
Above-described is only some embodiments of the present invention. For the person of ordinary skill of the art,Without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong toProtection scope of the present invention.
Claims (6)
1. for an electrolyte for high-voltage battery, it is characterized in that: by weight percentage, compriseThe nonaqueous solvents of 80%-90%, the lithium salts of 9.5%-15% and the additive of 0.5-5%, described additive is mass ratioFor (1-9): the mixture of pyridine derivatives (9-1) and fluorine boron compound.
2. a kind of electrolyte for high-voltage battery according to claim 1, is characterized in that: instituteStating nonaqueous solvents is carbonates solvent.
3. a kind of electrolyte for high-voltage battery according to claim 2, is characterized in that: instituteStating nonaqueous solvents is ethylene carbonate, propene carbonate, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonateAny two or more combination in ester.
4. a kind of electrolyte for high-voltage battery according to claim 1, is characterized in that: instituteStating lithium salts is LiPF6、LiPF4、LiClO4、LiBOB、LiN(CF3SO2)2In any one.
5. a kind of electrolyte for high-voltage battery according to claim 1, is characterized in that: instituteStating the concentration of lithium salts in described nonaqueous solvents is 0.8M-1.3M.
6. a kind of electrolyte for high-voltage battery according to claim 1, is characterized in that: instituteState the mixture that additive is pyridine and boron trifluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156472.5A CN105591157A (en) | 2016-03-18 | 2016-03-18 | Electrolyte for high-voltage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156472.5A CN105591157A (en) | 2016-03-18 | 2016-03-18 | Electrolyte for high-voltage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105591157A true CN105591157A (en) | 2016-05-18 |
Family
ID=55930534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610156472.5A Pending CN105591157A (en) | 2016-03-18 | 2016-03-18 | Electrolyte for high-voltage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105591157A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017204599A1 (en) * | 2016-05-27 | 2017-11-30 | 주식회사 엘지화학 | Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising same |
| CN108878975A (en) * | 2017-05-12 | 2018-11-23 | 宁德时代新能源科技股份有限公司 | Electrolyte and secondary battery including the same |
| CN109863634A (en) * | 2017-04-14 | 2019-06-07 | 株式会社Lg化学 | Copolymer solid electrolyte and lithium secondary battery comprising it |
| CN111129589A (en) * | 2019-12-23 | 2020-05-08 | 东莞市杉杉电池材料有限公司 | Ternary high-voltage lithium ion battery non-aqueous electrolyte and lithium ion battery thereof |
| CN112820940A (en) * | 2019-11-15 | 2021-05-18 | 华南师范大学 | Non-aqueous electrolyte containing 2-fluoro-3-pyridineboronic acid, and lithium metal battery containing same |
-
2016
- 2016-03-18 CN CN201610156472.5A patent/CN105591157A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| MENGYUN NIE等: ""A Comparative Study of Pyridine-Boron Trifluoride, Pyrazine-(BF3)2 and Triazine-(BF3)3 as Electrolyte Additives for Lithium-Ion Cells"", 《JOURNAL OF THE ELECTROCHEMICAL SOCIETY》 * |
| MENGYUN NIE等: ""Development of Pyridine-Boron Trifluoride Electrolyte Additives for Lithium-Ion Batteries"", 《JOURNAL OF THE ELECTROCHEMICAL SOCIETY》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017204599A1 (en) * | 2016-05-27 | 2017-11-30 | 주식회사 엘지화학 | Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising same |
| US11031625B2 (en) | 2016-05-27 | 2021-06-08 | Lg Chem, Ltd. | Non-aqueous electrolyte for lithium secondary battery, and lithium secondary battery comprising the same |
| CN109863634A (en) * | 2017-04-14 | 2019-06-07 | 株式会社Lg化学 | Copolymer solid electrolyte and lithium secondary battery comprising it |
| CN109863634B (en) * | 2017-04-14 | 2022-04-05 | 株式会社Lg新能源 | Polymer solid electrolyte and lithium secondary battery comprising the same |
| CN108878975A (en) * | 2017-05-12 | 2018-11-23 | 宁德时代新能源科技股份有限公司 | Electrolyte and secondary battery including the same |
| CN112820940A (en) * | 2019-11-15 | 2021-05-18 | 华南师范大学 | Non-aqueous electrolyte containing 2-fluoro-3-pyridineboronic acid, and lithium metal battery containing same |
| CN112820940B (en) * | 2019-11-15 | 2022-05-10 | 华南师范大学 | Non-aqueous electrolyte containing 2-fluoro-3-pyridineboronic acid, and lithium metal battery containing same |
| CN111129589A (en) * | 2019-12-23 | 2020-05-08 | 东莞市杉杉电池材料有限公司 | Ternary high-voltage lithium ion battery non-aqueous electrolyte and lithium ion battery thereof |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160518 |