CN103377835A - Double electric layer capacitor electrolytic solution - Google Patents
Double electric layer capacitor electrolytic solution Download PDFInfo
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- CN103377835A CN103377835A CN2012101187321A CN201210118732A CN103377835A CN 103377835 A CN103377835 A CN 103377835A CN 2012101187321 A CN2012101187321 A CN 2012101187321A CN 201210118732 A CN201210118732 A CN 201210118732A CN 103377835 A CN103377835 A CN 103377835A
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- fluoroform sulphonyl
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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
- Y02E60/13—Energy storage using capacitors
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Abstract
The invention belongs to the field of electrolytic solutions and discloses a double electric layer capacitor electrolytic solution which is characterized by comprising diimine (fluoroform sulfonyl) salt ionic liquid and aluminum fluoride with the molar ratio of 1:0.01-0.1. The double electric layer capacitor electrolytic solution is formed by the diimine (fluoroform sulfonyl) salt ionic liquid and the aluminum fluoride in a mixed mode, the diimine (fluoroform sulfonyl) salt ionic liquid can corrode electrode current collector-aluminum foil, and the service life of a capacitor is shortened. After added to the diimine (fluoroform sulfonyl) salt ionic liquid, the aluminum fluoride is uniformly deposited on the aluminum foil through reversible reaction with the current collector-aluminum foil to form a passivation layer, aluminum is prevented from being reacted with diimine (fluoroform sulfonyl) salt, and thus the effects that the aluminum foil is prevented from being corroded and the service life of a double electric layer capacitor is greatly prolonged are achieved.
Description
Technical field
The present invention relates to the electrolyte field, relate in particular to a kind of double electric layer capacitor electrolyte.
Background technology
Double electric layer capacitor is a kind of novel energy storage device, has the advantages such as high power density, high cycle life, fast charging and discharging performance be good, is widely used in the AC-battery power source of military field, device for mobile communication, computer and electric automobile etc.As the important component part of double electric layer capacitor, electrolyte has a significant impact the accumulate performance of double electric layer capacitor, is determining the equivalent internal resistance of capacitor, operating voltage range, accumulate capacity and working temperature and operational environment.
Ionic liquid is in room temperature or the organic liquid material that is comprised of ion fully under near the condition of room temperature.As a kind of novel electrolyte, the application of double electric layer capacitor has been expanded in the appearance of ionic liquid greatly.Two (fluoroform sulphonyl) imines salt ionic liquid is because its conductivity is high, overpressure resistant windows is wide, it is one of il electrolyte that relatively has DEVELOPMENT PROSPECT, yet, two (fluoroform sulphonyl) imines salt ionic liquid energy corroding electrode collector---aluminium foil causes the life-span of the double electric layer capacitor that uses two (fluoroform sulphonyl) imines salt ionic liquid to do electrolyte short.
Summary of the invention
Based on the problems referred to above, the invention provides a kind of double electric layer capacitor electrolyte that improves the double electric layer capacitor life-span.
Technical scheme of the present invention is as follows:
A kind of double electric layer capacitor electrolyte comprise two (fluoroform sulphonyl) imines salt ionic liquid and aluminum trifluoride, and the mol ratio of two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride is 1: 0.01~0.1.
In the above-mentioned double electric layer capacitor electrolyte, the mol ratio of two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride is preferably 1: 0.05~and 0.1.
In the above-mentioned double electric layer capacitor electrolyte, described two (fluoroform sulphonyl) imines salt ionic liquid is by any one formation in two (fluoroform sulphonyl) inferior amine salt roots and imidazole salt cation, quaternary ammonium salts cation, pyrroles's salt cationoid or the pyridiniujm cationoid; Wherein, glyoxaline cation is 1-butyl-3-methylimidazole cation, 1-propyl group-3-methylimidazole cation or 1-ethyl-3-methylimidazole cation; The quaternary ammonium salts cation is methyl triethyl group quaternary ammonium cation, tetraethyl quaternary ammonium cation or trimethyl propyl group quaternary ammonium cation; Pyrroles's cation is butyl methyl pyrroles cation, propyl group methylpyrrole cation or ethyl-methyl pyrroles cation; The pyridiniujm cationoid is butyl-pyridylium or hexyl-pyridylium.
The invention provides a kind of double electric layer capacitor electrolyte, it is mixed by two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride, two (fluoroform sulphonyl) imines salt ionic liquid energy corroding electrode collector--aluminium foil, the life-span of capacitor is reduced, in two (fluoroform sulphonyl) imines salt ionic liquid, add after the aluminum trifluoride, in the cyclic process of electrode, aluminum trifluoride will by with the reversible reaction of collector aluminium foil, be deposited on uniformly on the aluminium foil, form passivation layer, stop the reaction of aluminium and two (fluoroform sulphonyl) inferior amine salt, prevent aluminium foil corrosion thereby play, greatly increase the effect in double electric layer capacitor life-span.
Embodiment
A kind of double electric layer capacitor electrolyte provided by the invention comprise two (fluoroform sulphonyl) imines salt ionic liquid and aluminum trifluoride, and the mol ratio of two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride is 1: 0.01~0.1; Be preferably 1: 0.05~0.1.
In the above-mentioned double electric layer capacitor electrolyte, described two (fluoroform sulphonyl) imines salt ionic liquid is by any one formation in two (fluoroform sulphonyl) inferior amine salt roots and imidazole salt cation, quaternary ammonium salts cation, pyrroles's salt cationoid or the pyridiniujm cationoid; Wherein, glyoxaline cation is 1-butyl-3-methylimidazole cation, 1-propyl group-3-methylimidazole cation or 1-ethyl-3-methylimidazole cation; The quaternary ammonium salts cation is methyl triethyl group quaternary ammonium cation, tetraethyl quaternary ammonium cation or trimethyl propyl group quaternary ammonium cation; Pyrroles's cation is butyl methyl pyrroles cation, propyl group methylpyrrole cation or ethyl-methyl pyrroles cation; The pyridiniujm cationoid is butyl-pyridylium or hexyl-pyridylium.
In above-mentioned two (fluoroform sulphonyl) imines salt ionic liquid, after anion and cation combination, the salt compounds of formation is respectively:
1,1-ethyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt; 1-propyl group-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt; 1-butyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt;
2, methyl triethyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt; Tetraethyl quaternary amine two (fluoroform sulphonyl) inferior amine salt; Trimethyl propyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt;
3, butyl methyl pyrroles two (fluoroform sulphonyl) inferior amine salt; Propyl group methylpyrrole two (fluoroform sulphonyl) inferior amine salt; Ethyl-methyl pyrroles two (fluoroform sulphonyl) inferior amine salt;
4, butyl-pyridine two (fluoroform sulphonyl) inferior amine salt; Hexyl-pyridine two (fluoroform sulphonyl) inferior amine salt.
The invention provides a kind of double electric layer capacitor electrolyte, it is mixed by two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride, two (fluoroform sulphonyl) imines salt ionic liquid energy corroding electrode collector--aluminium foil, the life-span of capacitor is reduced, in two (fluoroform sulphonyl) imines salt ionic liquid, add after the aluminum trifluoride, in the cyclic process of electrode, aluminum trifluoride will by with the reversible reaction of collector aluminium foil, be deposited on uniformly on the aluminium foil, form passivation layer, stop the reaction of aluminium and two (fluoroform sulphonyl) inferior amine salt, prevent aluminium foil corrosion thereby play, greatly increase the effect in double electric layer capacitor life-span.
The below is described in further detail preferred embodiment of the present invention.
Among following each embodiment, cycle-index when the life-span of double electric layer capacitor is used and is 60% than electric capacity conservation rate represents, its concrete test is: take Graphene as electrode material, the double electric layer capacitor electrolyte that makes take each embodiment is as electrolyte, be assembled into button cell, utilize the CHI660A electrochemical workstation that it is carried out the constant current charge-discharge test, discharge and recharge number of times when recording it and being 60% than electric capacity conservation rate, namely under 30 degrees celsius, in the 0-2v window ranges, take the constant current repeated charge of 1A/g to than electric capacity for initial than electric capacity 60% the time discharge and recharge number of times.
Embodiment 1
In glove box, be that 1: 0.1 1-ethyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 30 minutes, aluminum trifluoride is dissolved in 1-butyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 900 times as the life-span of electrolyte, and the pure ionic liquid 1-butyl-3-methyl imidazolium two that records under the equal conditions (fluoroform sulphonyl) inferior amine salt is 200 times as the life-span of electrolyte; Therefore, the life-span than ionic liquid 1-ethyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt that does not add aluminum trifluoride that records under the equal conditions as the Service life of electrolyte 450% times.
Embodiment 2
In glove box, be that 1: 0.1 1-propyl group-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mixes with mol ratio.Stir after 60 minutes, aluminum trifluoride is dissolved in 1-propyl group-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 919 times as the life-span of electrolyte, and the pure ionic liquid 1-propyl group that records under the equal conditions-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt is 202 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid 1-propyl group that does not add aluminum trifluoride that records under the equal conditions-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt as the Service life of electrolyte 455% times.
Embodiment 3
In glove box, be that 1: 0.08 1-butyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mixes with mol ratio.Stir after 50 minutes, aluminum trifluoride is dissolved in 1-butyl-3-methylimidazole two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 945 times as the life-span of electrolyte, and the pure ionic liquid 1-butyl-3-methyl imidazolium two that records under the equal conditions (fluoroform sulphonyl) inferior amine salt is 210 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid 1-butyl-3-methyl imidazolium that does not add aluminum trifluoride two that records under the equal conditions (fluoroform sulphonyl) inferior amine salt as the Service life of electrolyte 450% times.
Embodiment 4
In glove box, be that 1: 0.07 methyl triethyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 20 minutes, aluminum trifluoride is dissolved in methyl triethyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 1024 times as the life-span of electrolyte, and pure ionic liquid methyl triethyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 254 times as the life-span of electrolyte; Therefore, the life-span than ionic liquid methyl triethyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt that does not add aluminum trifluoride that records under the equal conditions as the Service life of electrolyte 403% times.
Embodiment 5
In glove box, be that 1: 0.06 tetraethyl quaternary amine two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 30 minutes, aluminum trifluoride is dissolved in tetraethyl quaternary amine two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 983 times as the life-span of electrolyte, and pure ionic liquid tetraethyl quaternary amine two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 260 times as the life-span of electrolyte; Therefore, the life-span than ionic liquid tetraethyl quaternary amine two (fluoroform sulphonyl) inferior amine salt that does not add aluminum trifluoride that records under the equal conditions as the Service life of electrolyte 378% times.
Embodiment 6
In glove box, be that 1: 0.05 trimethyl propyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt and 32 aluminum fluorides mix with mol ratio.Stir after 40 minutes, aluminum trifluoride is dissolved in trimethyl propyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 826 times as the life-span of electrolyte, and pure ionic liquid trimethyl propyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 265 times as the life-span of electrolyte; Therefore, the life-span than ionic liquid trimethyl propyl group quaternary amine two (fluoroform sulphonyl) inferior amine salt that does not add aluminum trifluoride that records under the equal conditions as the Service life of electrolyte 312% times.
Embodiment 7
In glove box, be that 1: 0.04 butyl methyl pyrroles two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 10 minutes, aluminum trifluoride is dissolved in butyl methyl pyrroles two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 546 times as the life-span of electrolyte, and pure ionic liquid butyl methyl pyrroles two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 215 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid butyl methyl pyrroles two who does not add aluminum trifluoride (fluoroform sulphonyl) inferior amine salt that records under the equal conditions as the Service life of electrolyte 254% times.
Embodiment 8
In glove box, be that 1: 0.02 propyl group methylpyrrole two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 60 minutes, aluminum trifluoride is dissolved in propyl group methylpyrrole two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 415 times as the life-span of electrolyte, and pure ionic liquid propyl group methylpyrrole two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 220 times as the life-span of electrolyte; Therefore, the life-span than ionic liquid propyl group methylpyrrole two (fluoroform sulphonyl) inferior amine salt that does not add aluminum trifluoride that records under the equal conditions as the Service life of electrolyte 189% times.
Embodiment 9
In glove box, be that 1: 0.01 ethyl-methyl pyrroles two (fluoroform sulphonyl) inferior amine salt and aluminum trifluoride mix with mol ratio.Stir after 50 minutes, aluminum trifluoride is dissolved in ethyl-methyl pyrroles two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 256 times as the life-span of electrolyte, and pure ionic liquid ethyl-methyl pyrroles two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 223 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid ethyl-methyl pyrroles two who does not add aluminum trifluoride (fluoroform sulphonyl) inferior amine salt that records under the equal conditions as the Service life of electrolyte 115% times.
Embodiment 10
In glove box, be that butyl-pyridine two (fluoroform sulphonyl) inferior amine salt of 1: 0.09 and aluminum trifluoride mix with mol ratio.Stir after 30 minutes, aluminum trifluoride is dissolved in butyl-pyridine two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 1074 times as the life-span of electrolyte, and pure ionic liquid butyl-pyridine two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 243 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid butyl-pyridine two that does not add aluminum trifluoride (fluoroform sulphonyl) inferior amine salt that records under the equal conditions as the Service life of electrolyte 442% times.
Embodiment 11
In glove box, be that hexyl-pyridine two (fluoroform sulphonyl) inferior amine salt of 1: 0.03 and aluminum trifluoride mix with mol ratio.Stir after 50 minutes, aluminum trifluoride is dissolved in hexyl-pyridine two (fluoroform sulphonyl) inferior amine salt, obtains double electric layer capacitor electrolyte.
Test double electric layer capacitor electrolyte is 602 times as the life-span of electrolyte, and pure ionic liquid hexyl-pyridine two (fluoroform sulphonyl) inferior amine salt that records under the equal conditions is 256 times as the life-span of electrolyte; Therefore, the life-span than the ionic liquid hexyl-pyridine two that does not add aluminum trifluoride (fluoroform sulphonyl) inferior amine salt that records under the equal conditions as the Service life of electrolyte 235% times.
Should be understood that above-mentioned statement for preferred embodiment of the present invention is comparatively detailed, can not therefore think the restriction to scope of patent protection of the present invention, scope of patent protection of the present invention should be as the criterion with claims.
Claims (7)
1. a double electric layer capacitor electrolyte is characterized in that, comprises that mol ratio is two (fluoroform sulphonyl) imines salt ionic liquid and aluminum trifluoride of 1: 0.01~0.1.
2. double electric layer capacitor electrolyte according to claim 1 is characterized in that, the mol ratio of described two (fluoroform sulphonyl) imines salt ionic liquids and aluminum trifluoride is 1: 0.05~0.1.
3. double electric layer capacitor electrolyte according to claim 1 and 2, it is characterized in that described two (fluoroform sulphonyl) imines salt ionic liquid is any one formation in two (fluoroform sulphonyl) inferior amine salt root anion and imidazole salt cation, quaternary ammonium salts cation, pyrroles's salt cationoid or the pyridiniujm cationoid.
4. double electric layer capacitor electrolyte according to claim 3 is characterized in that, described glyoxaline cation is 1-butyl-3-methylimidazole cation, 1-propyl group-3-methylimidazole cation or 1-ethyl-3-methylimidazole cation.
5. double electric layer capacitor electrolyte according to claim 3 is characterized in that, described quaternary ammonium salts cation is methyl triethyl group quaternary ammonium cation, tetraethyl quaternary ammonium cation or trimethyl propyl group quaternary ammonium cation.
6. double electric layer capacitor electrolyte according to claim 3 is characterized in that, described pyrroles's cation is butyl methyl pyrroles cation, propyl group methylpyrrole cation or ethyl-methyl pyrroles cation.
7. double electric layer capacitor electrolyte according to claim 3 is characterized in that, described pyridiniujm cationoid is butyl-pyridylium or hexyl-pyridylium.
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Cited By (1)
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CN108550787A (en) * | 2018-04-26 | 2018-09-18 | 北京石墨烯研究院 | Lithium ion cell positive and lithium ion battery comprising it |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101164189A (en) * | 2005-04-19 | 2008-04-16 | 松下电器产业株式会社 | Nonaqueous electrolyte solution, electrochemical energy storage device using same, and nonaqueous electrolyte secondary battery |
EP2090565A2 (en) * | 2001-03-26 | 2009-08-19 | Nisshinbo Industries, Inc. | Ionic liquids |
CN101679292A (en) * | 2007-06-12 | 2010-03-24 | 日宝化学株式会社 | Ionic liquid and method for producing the same |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2090565A2 (en) * | 2001-03-26 | 2009-08-19 | Nisshinbo Industries, Inc. | Ionic liquids |
CN101164189A (en) * | 2005-04-19 | 2008-04-16 | 松下电器产业株式会社 | Nonaqueous electrolyte solution, electrochemical energy storage device using same, and nonaqueous electrolyte secondary battery |
CN101679292A (en) * | 2007-06-12 | 2010-03-24 | 日宝化学株式会社 | Ionic liquid and method for producing the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108550787A (en) * | 2018-04-26 | 2018-09-18 | 北京石墨烯研究院 | Lithium ion cell positive and lithium ion battery comprising it |
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Application publication date: 20131030 |