CN111261426B - Super capacitor electrolyte and super capacitor - Google Patents
Super capacitor electrolyte and super capacitor Download PDFInfo
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- CN111261426B CN111261426B CN201811465140.0A CN201811465140A CN111261426B CN 111261426 B CN111261426 B CN 111261426B CN 201811465140 A CN201811465140 A CN 201811465140A CN 111261426 B CN111261426 B CN 111261426B
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- tetrafluoroborate
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- imide salt
- hexafluorophosphate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/60—Liquid electrolytes characterised by the solvent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/62—Liquid electrolytes characterised by the solute, e.g. salts, anions or cations therein
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/64—Liquid electrolytes characterised by additives
-
- 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
- Y02E60/13—Energy storage using capacitors
Abstract
In order to overcome the problems of short cycle life and large gas production rate of the electrolyte under high temperature and high voltage in the prior art, the invention provides a super capacitor electrolyte, which comprises a polar aprotic solvent, an organic electrolyte and an additive, wherein the additive is selected from a compound shown in a structural formula 1: structural formula 1:
wherein R is an alkanenitrile containing 1 to 3 carbon atoms or a compound of formula 2: structural formula 2:
wherein R is 1 ～R 3 Selected from hydrogen, alkyl containing 1-3 carbon atoms, alkoxy containing 1-3 carbon atoms or aromatic hydrocarbon; r 1 ～R 3 May be the same or different. Meanwhile, the invention also discloses a super capacitor adopting the electrolyte. The super capacitor containing the super capacitor electrolyte provided by the invention has long cycle life and small gas production rate under high temperature and high voltage.
Description
Technical Field
The invention relates to a super capacitor electrolyte and a super capacitor.
Background
Supercapacitors, also called gold capacitors, electrochemical capacitors, use either ion adsorption (double layer capacitors) or surface fast redox reactions (pseudocapacitors) to store energy. A super capacitor is a new type of energy storage device between a battery and a conventional electrostatic capacitor. The super capacitor stores hundreds of times more charge than the traditional solid electrolytic capacitor, can be fully charged and discharged within seconds, has higher power input or output than a battery, and can achieve the charge in shorter time. Meanwhile, the super capacitor has the advantages of short charging and discharging time, long storage life, high stability, wide working temperature range (-40-70 ℃) and the like, so the super capacitor is widely applied to the fields of consumer electronics, new energy power generation systems, distributed energy storage systems, intelligent distributed power grid systems, new energy vehicles and other traffic fields, energy-saving elevator cranes and other load fields, electromagnetic bombs and other military equipment fields, motion control fields and the like, relates to various industries such as new energy power generation, intelligent power grids, new energy vehicles, energy-saving buildings, industrial energy conservation and emission reduction and the like, and belongs to a standard full-series low-carbon economic core product.
As one of the most promising energy storage devices in the new energy field, supercapacitors have become one of the hot spots of research in the cross-discipline fields of materials, electricity, physics, chemistry, etc. in the countries of the united states, japan, korea, and russia. The main research aims to prepare an electrode material with excellent performance and low cost and an electrolytic liquid system material with high conductivity, good chemical and thermal stability and high working voltage (wide electrochemical stability window), and prepare a super capacitor energy storage device which has high energy density, high power density and long service life and can be used for various hybrid power systems of electric and hybrid automobiles, backup power sources of electronic equipment and the like on the basis.
The propylene carbonate and the acetonitrile have better electrochemical and chemical stability and better solubility to organic quaternary ammonium salts, so the propylene carbonate and the acetonitrile are widely applied to an electrolyte system of a super capacitor. The currently commercialized supercapacitor electrolyte mainly adopts tetraethylammonium tetrafluoroborate (Et) 4 NBF 4 ) Or methyltriethylammonium tetrafluoroborate (Et) 3 MeNBF 4 ) Of Acetonitrile (AN) or Propylene Carbonate (PC). The upper limit of the voltage of the AN system super capacitor is only 2.7V, and the working temperature range is-40-65 ℃; the upper limit of the voltage of the super capacitor of the PC system is only 2.5V, and the working temperature range is-40 ℃ to 70 ℃. With the development of the super-capacity market, the conventional electrolyte at present cannot meet the requirements of customers on high temperature resistance and high pressure resistance of the super capacitor for the sake of safety and market competitiveness. The conventional electrolyte can cause electrochemical decomposition of the electrolyte when working at high voltage and high temperature, so that the pressure in the capacitor is remarkably increased, the electrochemical performance is remarkably reduced, and finally the capacitor fails.
Disclosure of Invention
The invention aims to solve the technical problems of short cycle life and large gas production rate of the electrolyte under high temperature and high voltage in the prior art, and provides the electrolyte of the super capacitor.
The technical scheme adopted by the invention for solving the technical problems is as follows:
provided is a supercapacitor electrolyte comprising a polar aprotic solvent, an organic electrolyte and an additive selected from compounds represented by structural formula 1:
structural formula 1:
wherein R is an alkanenitrile containing 1 to 3 carbon atoms or a compound of formula 2:
structural formula 2:
wherein R is 1 ～R 3 Selected from hydrogen, alkyl containing 1-3 carbon atoms, alkoxy containing 1-3 carbon atoms or aromatic hydrocarbon; r 1 ～R 3 May be the same or different.
Meanwhile, the invention also provides a super capacitor which comprises a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode and the super capacitor electrolyte.
The inventor finds that the additive can react with water in a capacitor at high temperature and high voltage in the super capacitor, so that side reactions caused by water are reduced, the stability of electrolyte is improved, the self-discharge and gas generation of the capacitor are reduced, the service life of the super capacitor is prolonged greatly, and the capacitor has good cycle life and high and low temperature performance.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The electrolyte of the super capacitor provided by the invention comprises a polar aprotic solvent, an organic electrolyte and an additive, wherein the additive is selected from a compound shown in a structural formula 1:
structural formula 1:
wherein R is an alkanenitrile containing 1 to 3 carbon atoms or a compound of formula 2:
structural formula 2:
wherein R is 1 ～R 3 Selected from hydrogen, alkyl containing 1-3 carbon atoms, alkoxy containing 1-3 carbon atoms or aromatic hydrocarbon; r 1 ～R 3 May be the same or different.
As mentioned above, in formula 1, R may be an alkanenitrile containing 1 to 3 carbon atoms, such as carbonitrile, acetonitrile, propionitrile, preferably carbonitrile. In the above R, if the carbon number of the alkylnitrile exceeds 3, the capacity of the supercapacitor is significantly reduced.
Meanwhile, R in the structural formula 1 can also be a silicon-containing substituent shown in a structural formula 2. Specifically, in the structural formula 2, R 1 、R 2 、R 3 Each independently selected from hydrogen, methyl, methoxy, ethoxy, phenyl.
In the present invention, the additive is preferably at least one selected from the group consisting of benzonitrile, phenylsilane, phenyltrimethoxysilane, phenyltriethoxysilane, methylphenyldimethoxysilane, and diphenyldimethoxysilane.
According to the invention, the content of the above-mentioned additive in the supercapacitor electrolyte may vary within wide limits, preferably in the range of 0.1% to 5%, more preferably in the range of 0.5% to 5%, based on the total weight of the supercapacitor electrolyte.
In general, a small amount of moisture is inevitably present in the electrolyte of the supercapacitor, including moisture brought in by the electrolyte, moisture brought in by other parts (such as positive and negative electrodes and separators) of the supercapacitor, and moisture in air brought in during the manufacturing process of the supercapacitor. The inventor finds that the side reaction of the moisture has obvious influence on the performance of the super capacitor, especially under high temperature and high voltage. When the electrolyte contains the additive, the occurrence of side reaction caused by water can be effectively avoided under high temperature and high voltage, so that the service life of the super capacitor under high temperature and high voltage is prolonged, and the gas generation is reduced.
In the present invention, various substances commonly used for the organic electrolyte can be used, for example, the organic electrolyte is selected from tetraethylammonium tetrafluoroborate, tetramethylammonium tetrafluoroborate, tetrapropylammonium tetrafluoroborate, tetrabutylammonium tetrafluoroborate, methyltriethylammonium tetrafluoroborate, diethyldimethylammonium tetrafluoroborate, trimethylethylammonium tetrafluoroborate, N-dimethylpyrrolidinetetrafluoroborate, N-ethyl-N-methylpyrrolidinium tetrafluoroborate, N-propyl-N-methylpyrrolidinium tetrafluoroborate, N-N-tetramethylpyrrolidiniumtetrafluoroborate, spiro- (1, 1') -dipyrrolidinefluoroamine, N-dimethylpiperidine tetrafluoroborate, N-diethylpiperidinefluoroamine, N-dimethylmorpholinefluoroborate, N-dimethylmorpholinefluorobluoroborate, N-dimethylpiperidine tetrafluoroborate, N-diethylpiperidinefluoroborate, N-dimethylpiperidine tetrafluoroborate, N-dimethylpyrrolidinefluoroborate, N-N-dimethylpyrrolidinebetrafluoroborate, N-tetrafluoroborate, N-N-dimethylpyrrole, N-N-dimethylpyrrolidineb, 1-Ethyl-3-methylimidazolium tetrafluoroborate, bis (trifluoromethylsulfonyl) imides such as tetraethylammonium tetrafluoroborate, tetramethylbis (trifluoromethylsulfonyl) imide salt, tetrapropylbis (trifluoromethylsulfonyl) imide salt, tetrabutylbis (trifluoromethylsulfonyl) imide salt, methyltriethylbis (trifluoromethylsulfonyl) imide salt, diethyldimethylbis (trifluoromethylsulfonyl) imide salt, trimethylethylbis (trifluoromethylsulfonyl) imide salt, N-dimethylpyrrolidinedi (trifluoromethylsulfonyl) imide salt, bis (fluorosulfonyl) imides such as tetraethylammonium tetrafluoroborate, tetramethylbis (fluorosulfonyl) imide salt, tetrapropylbis (fluorosulfonyl) imide salt, tetrabutylbis (fluorosulfonyl) imide salt, methyltriethylbis (fluorosulfonyl) imide salt, diethyldimethylbis (fluorosulfonyl) imide salt, Trimethylethylbis (fluorosulfonyl) imide salt, N-dimethylpyrrolidinebis (fluorosulfonyl) imide salt, ammonium hexafluorophosphate species such as tetraethylammonium hexafluorophosphate, tetramethylammonium hexafluorophosphate, tetrapropylammonium hexafluorophosphate, tetrabutylammonium hexafluorophosphate, methyltriethylammonium hexafluorophosphate, triethylmethylammonium hexafluorophosphate or diethyldimethylammonium hexafluorophosphate.
Preferably, the organic electrolyte is selected from the group consisting of N, N-dimethylpyrrolidine tetrafluoroborate, tetraethylammonium tetrafluoroborate, methyltriethylammonium tetrafluoroborate, spiro- (1, 1') -dipyrrolidine tetrafluoroborate, N-dimethylpyrrolidine bis (trifluoromethylsulfonyl) imide salts; n, N-dimethylpyrrolidine bis (fluorosulfonyl) imide salt, N-dimethylpyrrolidine hexafluorophosphate.
The content of the organic electrolyte can vary within a wide range, and preferably, the concentration of the organic electrolyte in the electrolyte of the supercapacitor is 0.5 to 3.0mol/L, more preferably 0.8 to 2.0 mol/L.
According to the present invention, the above-mentioned polar aprotic solvent may employ a substance conventional in the art, for example, the polar aprotic solvent is selected from one or more of acetonitrile, propionitrile, methoxypropionitrile, γ -butyrolactone, γ -valerolactone, ethylene carbonate, propylene carbonate, N-dimethylformamide, dimethylacetamide, 1-methyl-2-pyrrolidone, dimethoxyethane, 2-methoxyethyl ether, tetrahydrofuran, dioxolane, dimethyl carbonate, diethyl carbonate, methylethyl carbonate, sulfolane, dimethyl sulfoxide, dimethyl sulfone, methyl ethyl sulfone, methyl isopropyl sulfone, ethyl isobutyl sulfone, isopropyl-s-butyl sulfone, and butyl isobutyl sulfone. Preferably one or two of acetonitrile, propylene carbonate, sulfolane, dimethyl sulfone and ethyl isopropyl sulfone. Especially, when R in the additive is alkane nitrile, the effect is more remarkable.
The invention also discloses a super capacitor, which comprises a positive electrode, a negative electrode, a diaphragm between the positive electrode and the negative electrode and the super capacitor electrolyte.
The positive electrode, the negative electrode and the diaphragm of the super capacitor can be conventional, for example, the positive electrode and the negative electrode are carbon material electrodes, and the diaphragm is a fiber cloth diaphragm.
The present invention will be further illustrated by the following examples.
Assembling a super capacitor model in a glove box: the cell includes two collecting electrodes made of aluminum foil, two working electrodes made of activated carbon, and a fiber cloth separator interposed therebetween, but is not limited to this structure. Immersing the battery cell into the electrolyte in the following comparative examples and examples, assembling and sealing by adopting an aluminum shell and colloidal particles, and testing the high-low temperature performance; and testing the gas production rate by adopting an aluminum plastic film vacuum seal.
The test process of the super capacitor comprises the following steps:
(1) pre-cycle (10): charging at 25 ℃ with a charging cut-off voltage U and a constant current of 10 mA/F; then, discharging according to the lower limit voltage U/2 and the constant current 10 mA/F;
(2) charging the high-temperature box at 65-70 ℃ with constant current of 10mA/F to an upper limit voltage U, and keeping the voltage U constant for a certain time; taking out the super capacitor, cooling to 25 ℃, performing a charge-discharge test under the same test condition as the pre-circulation, and calculating the capacity retention rate and the ESR increase rate of the super capacitor;
(3) the capacity retention rate is less than or equal to 80 percent, and/or the ESR growth rate is more than or equal to 100 percent, which are used as the judgment standard of the over-capacity service life.
Example 1
Using N, N-dimethylpyrrolidine ammonium tetrafluoroborate as a solute and Acetonitrile (AN) as a solvent, 2.0mol/L of AN electrolyte was prepared, 0.2% by mass of phenylsilane was added based on the total mass of the electrolyte, and the composition of the electrolyte was as shown in table 1, and the conductivity of the electrolyte at 25 ℃ was measured, and the results were as shown in table 1. The electrolyte is used for manufacturing a super capacitor and carrying out electrochemical performance test on the super capacitor, and the service life, the capacity and the ESR test result are respectively listed in Table 1.
Examples 2 to 13
The same as in example 1, except that the solute, solvent, additive and concentration of the electrolyte were different. The solute, solvent, additive and concentration composition of the electrolyte of each example are shown in tables 1 and 2, and the conductivity of the electrolyte at 25 ℃ was measured, and the results are shown in tables 1 and 2, respectively. The electrolytes were used to fabricate supercapacitors and tested for electrochemical performance, with the results of life, capacity and ESR tests shown in tables 1 and 2, respectively.
Comparative example 1
Tetraethylammonium tetrafluoroborate was used as a solute and AN was used as a solvent to prepare 1.0mol/L of AN electrolyte solution, the composition of the electrolyte solution is shown in table 1, and the conductivity of the electrolyte solution at 25 ℃ was measured, and the results are respectively shown in table 1. The electrolyte is used for manufacturing a super capacitor and carrying out electrochemical performance test on the super capacitor, and the service life, the capacity and the ESR test result are respectively listed in Table 1.
Comparative examples 2 to 8
Except that the solute, solvent, additive and concentration of the electrolyte were different from those of comparative example 1. The solute, solvent, additive and concentration composition of each comparative electrolyte are shown in tables 1 and 2, and the conductivity of the electrolyte at 25 ℃ was measured, and the results are shown in tables 1 and 2, respectively. The electrolytes were used to fabricate supercapacitors and tested for electrochemical performance, with the results of life, capacity and ESR tests shown in tables 1 and 2, respectively.
TABLE 1
From the test results in table 1, it can be seen that, after the additive provided by the present invention is added under different solute and acetonitrile solvent systems, the service life of the supercapacitor under high temperature and high voltage conditions is significantly improved, and the gas production is significantly reduced. And with the increase of the content of the additive, the service life is prolonged, and the effect of inhibiting gas generation is more obvious.
TABLE 2
From the test results in table 2, it can be seen that, after the additive provided by the present invention is added under different solutes and propylene carbonate solvent systems, the service life of the supercapacitor under high temperature and high voltage conditions is significantly improved, and the gas production is significantly reduced. And with the increase of the content of the additive, the service life is prolonged, and the effect of inhibiting gas generation is more obvious.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A supercapacitor electrolyte comprising a polar aprotic solvent, an organic electrolyte and an additive selected from compounds represented by structural formula 1:
structural formula 1:
wherein R comprises structural formula 2:
structural formula 2:
wherein R is 1 ～R 3 Selected from hydrogen, alkoxy containing 1-3 carbon atoms or aromatic hydrocarbon; r 1 ～R 3 May be the same or different;
the additive is at least one selected from phenyl trimethoxy silane, phenyl triethoxy silane, methyl phenyl dimethoxy silane and diphenyl dimethoxy silane.
2. The supercapacitor electrolyte according to claim 1, wherein in the structural formula 2, R 1 、R 2 、R 3 Each independently selected from hydrogen, methoxy, ethoxy, phenyl.
3. The supercapacitor electrolyte according to any one of claims 1 to 2, wherein the additive is present in the supercapacitor electrolyte in an amount of 0.1% to 5% based on the total weight of the supercapacitor electrolyte.
4. The supercapacitor electrolyte according to claim 3, wherein the concentration of the organic electrolyte in the supercapacitor electrolyte is 0.5 to 3.0 mol/L.
5. The supercapacitor electrolyte according to claim 3, wherein the concentration of the organic electrolyte in the supercapacitor electrolyte is 0.8-2.0 mol/L.
6. The supercapacitor electrolyte according to any one of claims 1 to 2, 4 or 5, wherein the organic electrolyte is selected from one or more of ammonium tetrafluoroborate, bis (trifluoromethylsulfonyl) imide, bis (fluorosulfonyl) imide and ammonium hexafluorophosphate.
7. The supercapacitor electrolyte according to claim 6,
the ammonium tetrafluoroborate is selected from tetraethylammonium tetrafluoroborate, tetramethylammonium tetrafluoroborate, tetrapropylammonium tetrafluoroborate, tetrabutylammonium tetrafluoroborate, methyltriethylammonium tetrafluoroborate, diethyldimethylammonium tetrafluoroborate, trimethylethylammonium tetrafluoroborate, N, one or more of N-dimethylpyrrolidine tetrafluoroborate, N-ethyl-N-methylpyrrolidine tetrafluoroborate, N-propyl-N-methylpyrrolidine tetrafluoroborate, N-N-tetramethylenepyrrolidine tetrafluoroborate, spiro- (1, 1') -dipyrrolidine tetrafluoroborate, N-dimethylpiperidine tetrafluoroborate, N-diethylpiperidine tetrafluoroborate, N-dimethylmorpholine tetrafluoroborate, 1-ethyl-3-methylimidazolium tetrafluoroborate;
the bis (trifluoromethylsulfonyl) imide is selected from one or more of tetramethylbis (trifluoromethylsulfonyl) imide salt, tetrapropylbis (trifluoromethylsulfonyl) imide salt, tetrabutylbis (trifluoromethylsulfonyl) imide salt, methyltriethylbis (trifluoromethylsulfonyl) imide salt, diethyldimethylbis (trifluoromethylsulfonyl) imide salt, trimethylethylbis (trifluoromethylsulfonyl) imide salt, N-dimethylpyrrolidine bis (trifluoromethylsulfonyl) imide salt;
the bis (fluorosulfonyl) imide is selected from one or more of tetramethylbis (fluorosulfonyl) imide salt, tetrapropylbis (fluorosulfonyl) imide salt, tetrabutylbis (fluorosulfonyl) imide salt, methyltriethylbis (fluorosulfonyl) imide salt, diethyldimethylbis (fluorosulfonyl) imide salt, trimethylethylbis (fluorosulfonyl) imide salt, N-dimethylpyrrolidine bis (fluorosulfonyl) imide salt;
the ammonium hexafluorophosphate is selected from one or more of tetraethylammonium hexafluorophosphate, tetramethylammonium hexafluorophosphate, tetrapropylammonium hexafluorophosphate, tetrabutylammonium hexafluorophosphate, methyltriethylammonium hexafluorophosphate, triethylmethylammonium hexafluorophosphate, diethyldimethylammonium hexafluorophosphate and N, N-dimethylpyrrolidine hexafluorophosphate.
8. The supercapacitor electrolyte according to any one of claims 1 to 2, 4 and 5, wherein the polar aprotic solvent is selected from one or more of acetonitrile, propionitrile, methoxypropionitrile, γ -butyrolactone, γ -valerolactone, ethylene carbonate, propylene carbonate, N-dimethylformamide, dimethylacetamide, 1-methyl-2-pyrrolidone, dimethoxyethane, 2-methoxyethyl ether, tetrahydrofuran, dioxolane, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, sulfolane, dimethyl sulfoxide, dimethyl sulfone, methyl ethyl sulfone, methyl isopropyl sulfone, ethyl isobutyl sulfone, isopropyl s-butyl sulfone, butyl isobutyl sulfone.
9. A supercapacitor comprising a positive electrode, a negative electrode, a separator between the positive and negative electrodes and a supercapacitor electrolyte according to any one of claims 1 to 8.
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| CN201811465140.0A CN111261426B (en) | 2018-12-03 | 2018-12-03 | Super capacitor electrolyte and super capacitor |
| PCT/CN2019/122300 WO2020114338A1 (en) | 2018-12-03 | 2019-12-02 | Supercapacitor electrolyte and supercapacitor |
| KR1020217016491A KR102495382B1 (en) | 2018-12-03 | 2019-12-02 | Supercapacitor Electrolyte and Supercapacitor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103620714A (en) * | 2011-05-10 | 2014-03-05 | Cap-Xx有限公司 | Electrolyte |
| CN105359238A (en) * | 2013-07-12 | 2016-02-24 | Ioxus公司 | Stability enhancing additive for electrochemical devices |
| JP2017142940A (en) * | 2016-02-09 | 2017-08-17 | 三菱ケミカル株式会社 | Nonaqueous electrolytic solution and nonaqueous electrolyte secondary battery |
| CN107210144A (en) * | 2015-01-26 | 2017-09-26 | Ioxus公司 | Additive for reducing the ESR gains in electrochemical double layer capacitor |
| CN108475821A (en) * | 2015-12-17 | 2018-08-31 | 巴斯夫欧洲公司 | Cyanoalkyl sulfuryl fluoride for high-performance lithium ion battery group electrolyte composition |
| CN108899212A (en) * | 2018-07-17 | 2018-11-27 | 中国科学院过程工程研究所 | A kind of preparation method and application of ternary poly ion liquid base solid electrolyte |
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| CN101184691A (en) * | 2005-05-27 | 2008-05-21 | 住友化学株式会社 | Electric double layer capacitor |
| KR102457557B1 (en) * | 2014-09-30 | 2022-10-24 | 미쯔비시 케미컬 주식회사 | Nonaqueous electrolyte, and nonaqueous electrolyte secondary battery using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103620714A (en) * | 2011-05-10 | 2014-03-05 | Cap-Xx有限公司 | Electrolyte |
| CN105359238A (en) * | 2013-07-12 | 2016-02-24 | Ioxus公司 | Stability enhancing additive for electrochemical devices |
| CN107210144A (en) * | 2015-01-26 | 2017-09-26 | Ioxus公司 | Additive for reducing the ESR gains in electrochemical double layer capacitor |
| CN108475821A (en) * | 2015-12-17 | 2018-08-31 | 巴斯夫欧洲公司 | Cyanoalkyl sulfuryl fluoride for high-performance lithium ion battery group electrolyte composition |
| JP2017142940A (en) * | 2016-02-09 | 2017-08-17 | 三菱ケミカル株式会社 | Nonaqueous electrolytic solution and nonaqueous electrolyte secondary battery |
| CN108899212A (en) * | 2018-07-17 | 2018-11-27 | 中国科学院过程工程研究所 | A kind of preparation method and application of ternary poly ion liquid base solid electrolyte |
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| CN111261426A (en) | 2020-06-09 |
| KR102495382B1 (en) | 2023-02-06 |
| KR20210094553A (en) | 2021-07-29 |
| WO2020114338A1 (en) | 2020-06-11 |
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