CN101714657A - Novel multifunctional lithium ion battery electrolyte - Google Patents
Novel multifunctional lithium ion battery electrolyte Download PDFInfo
- Publication number
- CN101714657A CN101714657A CN200910249883A CN200910249883A CN101714657A CN 101714657 A CN101714657 A CN 101714657A CN 200910249883 A CN200910249883 A CN 200910249883A CN 200910249883 A CN200910249883 A CN 200910249883A CN 101714657 A CN101714657 A CN 101714657A
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- ion battery
- lithium ion
- chemical formula
- battery electrolyte
- novel multifunctional
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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
Abstract
The invention discloses a novel multifunctional lithium ion battery electrolyte. In the novel multifunctional lithium ion battery electrolyte, one or more fluorinated ether organic compounds are added into the traditional lithium ion battery electrolyte to be used as additives or solvents main body, namely, 1-50% of preferable fluorinated ether organic compound is added into the additive in the traditional lithium ion battery electrolyte to be mixed and used as a multifunctional additive. The fluorinated ether organic compound can be selected from the ether compound R2--O--R1 with the following chemical formula: (1) HCF2CH2OCF2CF2H, (2) HCF2CF2CH2OCF2CF2H or (3) HCF2CF2CH2OCF2H; the R1 and the R2 are respectively straight-chain paraffin groups with the carbon atoms being in a range of 1-5; and the number of residual hydrogen atoms is 1-5, namely, the content of hydrogen atoms accounts for 1%-5% of the whole chemical formula structure.
Description
Technical field
The invention belongs to technical field of lithium ion, relate to lithium-ion battery electrolytes, particularly a kind of multifunctional lithium ion battery electrolyte that contains new additive agent.
Background technology
Nowadays, mobile phone begins to realize 3G network gradually, and is more and more higher to the performance of lithium-ion secondary battery requirement of high-energy-density and high power capacity.In order to meet the need of market to the requirement of battery performance, along with the demand of constantly improving lithium ion cell positive, negative pole, three kinds of material properties of electrolyte, the while has also proposed new requirement to the improvement design of lithium ion battery.
From material property self, realize the high power capacity performance of lithium ion battery, can to improve the energy density of material, reach the volumetric properties that improves entire cell by changing the microstructure of positive and negative electrode material.But also can under the condition that does not change the material self structure,, promptly realize the charge and discharge cycles of lithium ion battery more than 4.2V by changing the system that discharges and recharges of lithium ion battery.For example: battery is realized charge and discharge cycles in the scope of 4.3V-3.0V.
Above-mentioned change discharges and recharges system and improves in order to reach battery capacity, can quicken in the charge and discharge process, electrolyte is in the oxidation Decomposition on both positive and negative polarity surface, thereby cause the internal resistance of battery to increase, cell thickness increases, the cycle performance variation, even under such system that discharges and recharges, cause dangerous generations the such as explosive combustion of battery toward the contact meeting, cause huge injury to people.
Summary of the invention
Organic solvent in the common lithium-ion battery electrolytes, for example vinyl carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate etc. can't satisfy high voltage and discharge and recharge condition.In order to satisfy the demand of high-capacity lithium ion cell electrolyte, the purpose of this invention is to provide a kind of novel multifunctional lithium ion battery electrolyte, its adopt to select appropriate organic solvent or additive to suppress under the high voltage condition electrolyte in the oxidation on both positive and negative polarity surface, thoroughly eliminate dangerous battery explosion burning possibility, solved problems of the prior art.
The technical solution adopted in the present invention is, a kind of novel multifunctional lithium ion battery electrolyte, this novel multifunctional lithium ion battery electrolyte are to add one or more fluoro ethers organic compound as additive or solvent main body in existing lithium-ion battery electrolytes.
Novel multifunctional lithium ion battery electrolyte of the present invention, its feature also be,
In described existing lithium-ion battery electrolytes, on the basis of additive, add through fluoro ethers organic compound preferred, 1～50% and mix as multifunction additive with it.
In described electrolyte basic composition, fluoro ethers organic compound use amount in lithium-ion battery electrolytes can be according to the performance requirement of electrolyte, the mass ratio of transposing the type fluoro ethers organic compound in 1～50% interval.
Described fluoro ethers organic compound can be to be selected from the ether compound shown in the following chemical formula:
Ether compound is: R2---O---R1, its chemical formula is:
Chemical formula (1) HCF
2CH
2OCF
2CF
2H
Chemical formula (2) HCF
2CF
2CH
2OCF
2CF
2H
Chemical formula (3) HCF
2CF
2CH
2OCF
2H
Described R1 and R2 are respectively that carbon number is 1～5 with interior linear paraffin group, and remaining hydrogen atom number is 1～5, and promptly the content of hydrogen atom accounts for 1%～5% of whole chemical formula structure.
The invention has the beneficial effects as follows, novel multifunctional lithium ion battery electrolyte of the present invention is on preferred existing organic solvent basis, the fluoro ethers organic compound that adds one or more is as additive or solvent main body, suppressed under the high voltage condition electrolyte in the oxidation on both positive and negative polarity surface; And on the basis of original additive with preferred fluoro ethers organic compound, ratio in 1～50% is mixed the multiple performance of improving lithium ion battery as multifunction additive with it, the security performance of lithium ion battery under conditions such as abuse improved greatly, stoped the burning of electrolyte, thoroughly eliminate dangerous battery explosion burning possibility, by containing the lithium-ion battery electrolytes that the type fluorinated organic compound is formed, can realize the charge and discharge cycles of lithium ion battery between 4.35V-3.0V, and circulation volume is greatly improved, be implemented under the condition that does not change the positive and negative pole material characteristic, the performance of lithium ion cell high-capacity performance, also promptly use in the lithium ion battery of the type electrolyte, the utilization ratio of positive and negative pole material active material is significantly increased, and makes it obtain the increase of charge and discharge cycles capacity under the booster tension condition.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The present invention is a kind of novel multifunctional lithium ion battery electrolyte, and this novel multifunctional lithium ion battery electrolyte is to add one or more fluoro ethers organic compound as additive or solvent main body in existing lithium-ion battery electrolytes.
In described existing lithium-ion battery electrolytes on the basis of additive, add through preferred, 1～50% fluoro ethers organic compound mix as multifunction additive with it.
In described electrolyte basic composition, fluoro ethers organic compound use amount in lithium-ion battery electrolytes can be carried out the mass ratio adjustment of the type fluoro ethers organic compound according to the performance requirement of electrolyte in 1～50% interval.
Described fluoro ethers organic compound can be to be selected from the ether compound shown in the following chemical formula:
Ether compound is: R2---O---R1, its chemical formula is:
Chemical formula (1) HCF
2CH
2OCF
2CF
2H
Chemical formula (2) HCF
2CF
2CH
2OCF
2CF
2H
Chemical formula (3) HCF
2CF
2CH
2OCF
2H
Described R1 and R2 are respectively that carbon number is 1～5 with interior linear paraffin group, and remaining hydrogen atom number is 1～5, and promptly the content of hydrogen atom accounts for 1%～5% of whole chemical formula structure.
In order better to describe the present invention, specify below by embodiment:
Embodiment 1
(H in the glove box of applying argon gas
2O＜10ppm), 1: 1: 1 in proportion (wt%) gets EC, DEC, the DMC organic solvent that accounts for total weight 77.5%; Get lithium salts lithium hexafluoro phosphate (LiPF
6), account for 12.5% of total weight; Get 5% chemical formula (1) HCF that accounts for total weight
2CH
2OCF
2CF
2The additive of H ether compound; Get propane sultone (PS), account for 5% of total weight; Add container successively and stir, promptly obtain multifunctional lithium ion battery electrolyte of the present invention.
Embodiment 2
(H in the glove box of applying argon gas
2O＜10ppm), 1: 1: 1 in proportion (wt%) gets EC, DEC, the DMC organic solvent that accounts for total weight 72.5%; Get lithium salts lithium hexafluoro phosphate (LiPF
6), account for 12.5% of total weight; Get 10% chemical formula (2) HCF that accounts for total weight
2CF
2CH
2OCF
2CF
2The additive of H ether compound; Get inferior vinyl carbonate (VC), account for 5% of total weight; Add container successively and stir, promptly obtain multifunctional lithium ion battery electrolyte of the present invention.
Embodiment 3
(H in the glove box of applying argon gas
2O＜10ppm), 1: 2 in proportion (wt%) gets EC, the DMC organic solvent that accounts for total weight 47.5%; Get lithium salts lithium hexafluoro phosphate (LiPF
6), account for 12.5% of total weight; Get 40% chemical formula (2) HCF that accounts for total weight
2CF
2CH
2OCF
2CF
2The additive of H ether compound; Add container successively and stir, promptly obtain multifunctional lithium ion battery electrolyte of the present invention.
The performance test contrast test:
A, B are respectively taken by weighing 100 grams place two to fluoridize bottle respectively, wherein A is not for containing the battery electrolyte contrast sample of additive of the present invention, and B adds the battery electrolyte of 3% chemical formula (2) for the present invention, is prepared into battery with two kinds of electrolyte respectively.According to the experimental project demand, the following test of carrying out battery performance.
Performance test mainly comprises:
1. get the prepared battery that forms of two kinds of different electrolytes of A and B, each 10 groups.The 1C multiplying power is charged to 4.4V, and the 1C multiplying power discharging is to 3.0V then, according to this system of discharging and recharging 200 cycles that circulate.Following table is capability retention, thickness increment rate, internal resistance increment rate data
2. get the prepared battery that forms of two kinds of different electrolytes of A and B, each 5 groups.Then with battery as for baking battery 30 minutes in 150 ℃ the baking oven.
√ represents that battery passes through thermal shock test, and * expression battery does not pass through thermal shock test.
| Sequence number | ??A | ??B |
| ??1 | ??× | ??√ |
| ??2 | ??× | ??√ |
| ??3 | ??× | ??√ |
| ??4 | ??× | ??√ |
| ??5 | ??× | ??√ |
By finding out significantly in the above-mentioned table that the battery performance index that contains multifunctional lithium ion battery electrolyte of the present invention is better than not containing the battery electrolyte of additive of the present invention greatly.
Above-mentioned execution mode is an an example of the present invention, is not to be used for limiting enforcement of the present invention and interest field, and all equivalences of making according to the described content of the present patent application scope of patent protection change and modify, and all should be included in the present patent application claim.
Claims (4)
1. novel multifunctional lithium ion battery electrolyte, it is characterized in that this novel multifunctional lithium ion battery electrolyte is to add one or more fluoro ethers organic compound as additive or solvent main body in existing lithium-ion battery electrolytes.
2. novel multifunctional lithium ion battery electrolyte according to claim 1, it is characterized in that, in described existing lithium-ion battery electrolytes, on the basis of additive, add through fluoro ethers organic compound preferred, 1～50% and mix as multifunction additive with it.
3. novel multifunctional lithium ion battery electrolyte according to claim 1, it is characterized in that, in described electrolyte basic composition, fluorinated organic compound is use amount in lithium-ion battery electrolytes, can in 1～50% interval, carry out the mass ratio adjustment of the type fluoro ethers organic compound according to the performance requirement of electrolyte.
4. novel multifunctional lithium ion battery electrolyte according to claim 1 is characterized in that, described fluoro ethers organic compound can be to be selected from the ether compound shown in the following chemical formula:
Ether compound is: R2-O-R1, and its chemical formula is:
Chemical formula (1) HCF
2CH
2OCF
2CF
2H
Chemical formula (2) HCF
2CF
2CH
2OCF
2CF
2H
Chemical formula (3) HCF
2CF
2CH
2OCF
2H
Described R1 and R2 are respectively that carbon number is 1～5 with interior linear paraffin group, and remaining hydrogen atom number is 1～5, and promptly the content of hydrogen atom accounts for 1%～5% of whole chemical formula structure.
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|---|---|---|---|
| CN200910249883A CN101714657A (en) | 2009-11-30 | 2009-11-30 | Novel multifunctional lithium ion battery electrolyte |
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|---|---|---|---|
| CN200910249883A CN101714657A (en) | 2009-11-30 | 2009-11-30 | Novel multifunctional lithium ion battery electrolyte |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012074135A (en) * | 2010-09-27 | 2012-04-12 | Tosoh F-Tech Inc | Nonaqueous electrolyte containing difluoroethyl ether |
| CN103456993A (en) * | 2013-09-30 | 2013-12-18 | 东莞市杉杉电池材料有限公司 | High-voltage lithium-ion battery electrolyte |
| CN103843189A (en) * | 2011-10-03 | 2014-06-04 | 大金工业株式会社 | Battery and non-aqueous electrolyte |
| CN104752770A (en) * | 2013-12-30 | 2015-07-01 | 天津金牛电源材料有限责任公司 | Preparation method of high voltage electrolyte used for lithium ion battery |
| CN105794035A (en) * | 2013-11-28 | 2016-07-20 | 日本电气株式会社 | Electrolyte for secondary battery and secondary battery using same |
| CN105826608A (en) * | 2016-05-25 | 2016-08-03 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN105826607A (en) * | 2016-05-25 | 2016-08-03 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN107799828A (en) * | 2017-10-26 | 2018-03-13 | 中国科学院过程工程研究所 | Suitable for insertion, the Difunctional electrolyte of transformant lithium battery, preparation method and include its lithium battery |
| CN109148960A (en) * | 2018-10-10 | 2019-01-04 | 杉杉新材料（衢州）有限公司 | A kind of lithium ion battery nonaqueous electrolytic solution and the lithium ion battery using the electrolyte |
| US10243234B2 (en) | 2014-10-24 | 2019-03-26 | Nec Corporation | Secondary battery |
| US10249449B2 (en) | 2016-03-01 | 2019-04-02 | Maxwell Technologies, Inc. | Electrolyte formulations for energy storage devices |
| CN112310477A (en) * | 2019-08-02 | 2021-02-02 | 杉杉新材料（衢州）有限公司 | Overcharge-preventing lithium ion battery electrolyte |
| CN114447426A (en) * | 2021-12-22 | 2022-05-06 | 清华大学 | Lithium-sulfur battery electrolyte, preparation method thereof and lithium-sulfur battery |
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| CN1287695A (en) * | 1998-09-11 | 2001-03-14 | 三井化学株式会社 | Nonaqueous electrolytic liquid and secondary battery with nonaqueous electrolytic liquid |
| CN1477729A (en) * | 2002-08-22 | 2004-02-25 | ����Sdi��ʽ���� | Electrolyte for chargeable lithium cell and chargeable lithium cell containg the same |
| CN101156215A (en) * | 2005-03-30 | 2008-04-02 | 大金工业株式会社 | Electrolyte solution |
| CN101584075A (en) * | 2006-12-22 | 2009-11-18 | 大金工业株式会社 | Nonaqueous electrolyte solution |
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2009
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| CN1287695A (en) * | 1998-09-11 | 2001-03-14 | 三井化学株式会社 | Nonaqueous electrolytic liquid and secondary battery with nonaqueous electrolytic liquid |
| CN1477729A (en) * | 2002-08-22 | 2004-02-25 | ����Sdi��ʽ���� | Electrolyte for chargeable lithium cell and chargeable lithium cell containg the same |
| CN101156215A (en) * | 2005-03-30 | 2008-04-02 | 大金工业株式会社 | Electrolyte solution |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012074135A (en) * | 2010-09-27 | 2012-04-12 | Tosoh F-Tech Inc | Nonaqueous electrolyte containing difluoroethyl ether |
| CN103843189A (en) * | 2011-10-03 | 2014-06-04 | 大金工业株式会社 | Battery and non-aqueous electrolyte |
| US9509016B2 (en) | 2011-10-03 | 2016-11-29 | Daikin Industries, Ltd. | Battery and non-aqueous electrolyte |
| CN103456993A (en) * | 2013-09-30 | 2013-12-18 | 东莞市杉杉电池材料有限公司 | High-voltage lithium-ion battery electrolyte |
| CN105794035A (en) * | 2013-11-28 | 2016-07-20 | 日本电气株式会社 | Electrolyte for secondary battery and secondary battery using same |
| US10587008B2 (en) | 2013-11-28 | 2020-03-10 | Nec Corporation | Electrolyte solution for secondary battery and secondary battery using same |
| CN105794035B (en) * | 2013-11-28 | 2019-07-26 | 日本电气株式会社 | Secondary cell electrolyte and the secondary cell for using it |
| CN104752770A (en) * | 2013-12-30 | 2015-07-01 | 天津金牛电源材料有限责任公司 | Preparation method of high voltage electrolyte used for lithium ion battery |
| US10243234B2 (en) | 2014-10-24 | 2019-03-26 | Nec Corporation | Secondary battery |
| US10249449B2 (en) | 2016-03-01 | 2019-04-02 | Maxwell Technologies, Inc. | Electrolyte formulations for energy storage devices |
| US11107640B2 (en) | 2016-03-01 | 2021-08-31 | Maxwell Technologies, Inc. | Electrolyte formulations for energy storage devices |
| CN105826608A (en) * | 2016-05-25 | 2016-08-03 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN105826607B (en) * | 2016-05-25 | 2019-05-14 | 宁德新能源科技有限公司 | A kind of electrolyte and the lithium ion battery including the electrolyte |
| CN105826607A (en) * | 2016-05-25 | 2016-08-03 | 宁德新能源科技有限公司 | Electrolyte and lithium ion battery containing electrolyte |
| CN107799828A (en) * | 2017-10-26 | 2018-03-13 | 中国科学院过程工程研究所 | Suitable for insertion, the Difunctional electrolyte of transformant lithium battery, preparation method and include its lithium battery |
| CN109148960A (en) * | 2018-10-10 | 2019-01-04 | 杉杉新材料（衢州）有限公司 | A kind of lithium ion battery nonaqueous electrolytic solution and the lithium ion battery using the electrolyte |
| CN109148960B (en) * | 2018-10-10 | 2020-10-02 | 杉杉新材料（衢州）有限公司 | Non-aqueous electrolyte for lithium ion battery and lithium ion battery using same |
| CN112310477A (en) * | 2019-08-02 | 2021-02-02 | 杉杉新材料（衢州）有限公司 | Overcharge-preventing lithium ion battery electrolyte |
| CN112310477B (en) * | 2019-08-02 | 2022-08-19 | 杉杉新材料（衢州）有限公司 | Overcharge-preventing lithium ion battery electrolyte |
| CN114447426A (en) * | 2021-12-22 | 2022-05-06 | 清华大学 | Lithium-sulfur battery electrolyte, preparation method thereof and lithium-sulfur battery |
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Application publication date: 20100526 |