CN102867989A - Non-aqueous electrolyte ionic liquid additive for improving high-temperature performance of battery - Google Patents
Non-aqueous electrolyte ionic liquid additive for improving high-temperature performance of battery Download PDFInfo
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- CN102867989A CN102867989A CN2011101877765A CN201110187776A CN102867989A CN 102867989 A CN102867989 A CN 102867989A CN 2011101877765 A CN2011101877765 A CN 2011101877765A CN 201110187776 A CN201110187776 A CN 201110187776A CN 102867989 A CN102867989 A CN 102867989A
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- battery
- vinyl
- electrolyte
- allyl imidazole
- allyl
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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 relates to a non-aqueous electrolyte ionic liquid additive for improving the high-temperature performance of a battery. The safety performance of the lithium ion battery can be effectively improved, combustion or explosion of the battery due to overheating and over-charge is prevented, and the cycle performance of the battery at a high temperature is improved. The electrolyte ionic liquid additive of the lithium ion battery includes a series of unitary, binary or ternary substituted imidazolium ionic liquid. By the aid of the non-aqueous electrolyte ionic liquid additive, the safety performance of the battery at the high temperature is effectively ensured, the performance of the battery is less affected, and the requirement of enormous consumers on the high-temperature safety performance can be effectively met.
Description
Technical field
The present invention relates to a kind of nonaqueous electrolytic solution ion liquid addictive, particularly a kind of nonaqueous electrolytic solution ion liquid addictive be used to improving security performance under the high-temperature lithium ion battery condition.
Background technology
Lithium ion battery relies on the comprehensive advantage of himself coming into a more huge industrial colony---automobile power cell field.Nonaqueous electrolytic solution is as the carrier of ion motion in the lithium battery, its each time progress has all effectively promoted the application of lithium ion battery and has developed rapidly, and in a foreseeable future in the electrokinetic cell industry development, electrolyte material will be played the part of very crucial role in the development of lithium battery.The machine solvent of common are mainly contains: ethylene carbonate EC, methyl ethyl carbonate EMC, diethyl carbonate DEC, dimethyl carbonate DMC, propene carbonate PC etc.And organic solution generally has the poor shortcoming of electrical conductance (being that resistance is large), and under the work of short circuit and excess load, large electric current will cause the inside battery heat release fast, cause the electrolyte burning; And overcharging, crossing in the situation about putting, electrolyte is oxidated or reduced, and produces a large amount of gases, makes the lithium ion battery of sealing even the danger of blast is arranged! In addition, inside battery heats up and the aggravation of cell reaction is a pair of positive feedback vicious circle, causes battery short time internal combustion or blast.The adding that improves the battery high-temperature behavior additive can make inflammable organic electrolyte become difficult combustion or non-flammable electrolyte, reduce battery heat release value and battery self-heating rate, also increase simultaneously the thermal stability of electrolyte self, avoid burning or the blast of battery under overheated condition.The adding of ionic liquid can effectively improve the security performance of lithium ion battery under hot conditions, improves the cycle performance of battery under hot conditions.
Summary of the invention
The object of the present invention is to provide a kind of non-water electrolytic solution additive, can effectively improve the security performance of lithium ion battery under hot conditions, improve the cycle performance of battery under hot conditions.
A kind of non-water electrolytic solution additive that improves battery high-temperature behavior of the present invention is a series of glyoxaline ion liquids, and its anion can be PF
6 -, BF
4 -, TFSI
-, FSI
-, BOB
-, TSAC
-Deng.
Ion liquid addictive provided by the invention is characterized in that: described ion liquid addictive cation has following structure, and its proportion content in lithium battery electrolytes is 1%-10%;
Be substituted by monobasic, binary or ternary in the said structure and replace, and, R
1, R
2, R
3Independently be selected from respectively alkyl, alkoxyl, the aromatic radical of carbon atom between 0-10; Independently be selected from following group: methyl, ethyl, propyl group, vinyl, pi-allyl, ethenylidene, phenyl, benzyl or benzyl especially respectively.
Above-mentioned additive is selected from least a in following several material: 1-vinyl-3-allyl imidazole, 1-ethenylidene-3-allyl imidazole, 1-phenyl-3-allyl imidazole, 1-benzyl-3-allyl imidazole, 2-phenyl-1-methylimidazole, 2-ethenylidene-1-ethyl imidazol(e), 2-vinyl-1-phenylimidazole, 2-phenylimidazole, 2-vinyl imidazole, 2-allyl imidazole, 2-ethenylidene imidazoles;
Above-mentioned ion liquid addictive, its anion can be PF
6 -, BF
4 -, TFSI
-, FSI
-, BOB
-, TSAC
-Deng wherein any.
The invention provides a kind of can the safety of Effective Raise lithium battery under hot conditions and the ion liquid addictive of cycle performance, both effectively guaranteed the security performance of battery under the condition of high temperature, very little on the battery performance impact again simultaneously, can finely satisfy consumers in general to the demand of battery high-temperature security performance.
Embodiment
Further narrate the present invention below in conjunction with embodiment.Specific embodiment does not limit claim of the present invention.
Embodiment 1
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 99 parts, add the yellow imide salts of 1 part of additive 1-vinyl of the present invention-3-allyl imidazole bis trifluoromethyl, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, the yellow imide salts of ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole bis trifluoromethyl is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: the yellow imide salts of 1-vinyl-3-allyl imidazole bis trifluoromethyl, 1wt%.
Embodiment 2
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 97 parts, add the yellow imide salts of 3 parts of additive 1-vinyl of the present invention-3-allyl imidazole bis trifluoromethyl, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, the yellow imide salts of ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole bis trifluoromethyl is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: the yellow imide salts of 1-vinyl-3-allyl imidazole bis trifluoromethyl, 3wt%.
Embodiment 3
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 95 parts, add the yellow imide salts of 5 parts of additive 1-vinyl of the present invention-3-allyl imidazole bis trifluoromethyl, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, the yellow imide salts of ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole bis trifluoromethyl is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: the yellow imide salts of 1-vinyl-3-allyl imidazole bis trifluoromethyl, 5wt%.
Embodiment 4
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 90 parts, add the yellow imide salts of 10 parts of additive 1-vinyl of the present invention-3-allyl imidazole bis trifluoromethyl, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
Dispose electrolyte in glove box, moisture is controlled at≤5PPM in the glove box, and ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole are mixed, and then adds LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: the yellow imide salts of 1-vinyl-3-allyl imidazole bis trifluoromethyl, 10wt%.
Embodiment 5
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 99 parts, add 1 part of additive 1-vinyl of the present invention-3-allyl imidazole hexafluorophosphate, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole hexafluorophosphate is mixed, then add LiPF
6, make its solution that becomes 1M, prepare the electrolyte of this invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: 1-vinyl-3-allyl imidazole hexafluorophosphate, 1wt%.
Embodiment 6
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 97 parts, add 3 parts of additive 1-vinyl of the present invention-3-allyl imidazole hexafluorophosphates, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole hexafluorophosphate is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: 1-vinyl-3-allyl imidazole hexafluorophosphate, 3wt%.
Embodiment 7
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 95 parts, add 5 parts of additive 1-vinyl of the present invention-3-allyl imidazole hexafluorophosphates, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole hexafluorophosphate is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: 1-vinyl-3-allyl imidazole hexafluorophosphate, 5wt%.
Embodiment 8
Ethylene carbonate (EC), dimethyl carbonate (DMC) and methyl ethyl carbonate (EMC) are mixed with 1: 1: 1 ratio, be made into mixed solvent.Get mixed solvent 90 parts, add 10 parts of additive 1-vinyl of the present invention-3-allyl imidazole hexafluorophosphates, add a certain amount of LiPF
6, make it be formulated as the electrolyte of 1M.
In glove box, dispose electrolyte, moisture is controlled at≤5PPM in the glove box, ethylene carbonate (EC), dimethyl carbonate (DMC), methyl ethyl carbonate (EMC) and 1-vinyl-3-allyl imidazole hexafluorophosphate is mixed, then add LiPF
6, make its solution that becomes 1M, prepare electrolyte of the present invention.
Take the weight of electrolyte as benchmark, the composition of this additive is: 1-vinyl-3-allyl imidazole hexafluorophosphate, 10wt%.
Claims (5)
1. a nonaqueous electrolytic solution ion liquid addictive that improves battery high-temperature behavior is characterized in that described ionic liquid cationic structural is as follows, and this ion liquid addictive shared part by weight in battery electrolyte is: 1%-10%;
Be substituted by monobasic, binary or ternary in the said structure and replace, and, R
1, R
2, R
3Independently be selected from respectively alkyl, alkoxyl, the aromatic radical of carbon atom between 0-10;
2. the ion liquid addictive in the claim 1 is characterized in that: substituent R
1, R
2, R
3Independently be selected from respectively following group: methyl, ethyl, propyl group, vinyl, pi-allyl, ethenylidene, phenyl, benzyl, benzyl;
3. the ion liquid addictive in the claim 1 or 2 is characterized in that: described additive is selected from least a in following several material: 1-vinyl-3-allyl imidazole, 1-ethenylidene-3-allyl imidazole, 1-phenyl-3-allyl imidazole, 1-benzyl-3-allyl imidazole, 2-phenyl-1-methylimidazole, 2-ethenylidene-1-ethyl imidazol(e), 2-vinyl-1-phenylimidazole, 2-phenylimidazole, 2-vinyl imidazole, 2-allyl imidazole, 2-ethenylidene imidazoles;
4. the ion liquid addictive in the claim 1 or 2 is characterized in that: be selected from following at least a in several: PF with the anion of its complexing
6 -, BF
4 -, TFSI
-, FSI
-, BOB
-, TSAC
-
5. lithium ion battery by the preparation of the lithium-ion battery electrolytes of claim 1 or 2 described raising battery high-temperature behaviors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101877765A CN102867989A (en) | 2011-07-06 | 2011-07-06 | Non-aqueous electrolyte ionic liquid additive for improving high-temperature performance of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101877765A CN102867989A (en) | 2011-07-06 | 2011-07-06 | Non-aqueous electrolyte ionic liquid additive for improving high-temperature performance of battery |
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| Publication Number | Publication Date |
|---|---|
| CN102867989A true CN102867989A (en) | 2013-01-09 |
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|---|---|---|---|
| CN2011101877765A Pending CN102867989A (en) | 2011-07-06 | 2011-07-06 | Non-aqueous electrolyte ionic liquid additive for improving high-temperature performance of battery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996874A (en) * | 2014-05-20 | 2014-08-20 | 珠海市赛纬电子材料有限公司 | Nonaqueous electrolyte of high-temperature safety lithium ion battery |
| CN104022316A (en) * | 2014-06-16 | 2014-09-03 | 中国科学院过程工程研究所 | High-temperature type lithium ion battery |
| CN106328995A (en) * | 2015-07-07 | 2017-01-11 | 中国科学院过程工程研究所 | Electrolyte additive for lithium ion battery |
| CN114641883A (en) * | 2020-02-21 | 2022-06-17 | 株式会社Lg新能源 | Nonaqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087035A (en) * | 2006-06-06 | 2007-12-12 | 比亚迪股份有限公司 | An electrolyte for secondary lithium battery and secondary lithium battery using this electrolyte |
| CN101440188A (en) * | 2008-12-30 | 2009-05-27 | 哈尔滨工业大学 | Lithium ionic cell gel type ion liquid / polymer electrolyte and preparation thereof |
| CN101510622A (en) * | 2008-02-14 | 2009-08-19 | 比亚迪股份有限公司 | Electrolyte for lithium ion secondary battery and battery containing the electrolyte |
| CN101635380A (en) * | 2009-07-15 | 2010-01-27 | 哈尔滨工业大学 | Lithium ion battery gel type ionic liquid/polymer electrolyte and preparation method thereof |
-
2011
- 2011-07-06 CN CN2011101877765A patent/CN102867989A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087035A (en) * | 2006-06-06 | 2007-12-12 | 比亚迪股份有限公司 | An electrolyte for secondary lithium battery and secondary lithium battery using this electrolyte |
| CN101510622A (en) * | 2008-02-14 | 2009-08-19 | 比亚迪股份有限公司 | Electrolyte for lithium ion secondary battery and battery containing the electrolyte |
| CN101440188A (en) * | 2008-12-30 | 2009-05-27 | 哈尔滨工业大学 | Lithium ionic cell gel type ion liquid / polymer electrolyte and preparation thereof |
| CN101635380A (en) * | 2009-07-15 | 2010-01-27 | 哈尔滨工业大学 | Lithium ion battery gel type ionic liquid/polymer electrolyte and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996874A (en) * | 2014-05-20 | 2014-08-20 | 珠海市赛纬电子材料有限公司 | Nonaqueous electrolyte of high-temperature safety lithium ion battery |
| CN104022316A (en) * | 2014-06-16 | 2014-09-03 | 中国科学院过程工程研究所 | High-temperature type lithium ion battery |
| CN106328995A (en) * | 2015-07-07 | 2017-01-11 | 中国科学院过程工程研究所 | Electrolyte additive for lithium ion battery |
| CN114641883A (en) * | 2020-02-21 | 2022-06-17 | 株式会社Lg新能源 | Nonaqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same |
| CN114641883B (en) * | 2020-02-21 | 2024-05-28 | 株式会社Lg新能源 | Nonaqueous electrolyte for lithium secondary battery and lithium secondary battery comprising same |
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Application publication date: 20130109 |