CN103426655B - A kind of electrolyte for double-layer capacitor and preparation method thereof - Google Patents
A kind of electrolyte for double-layer capacitor and preparation method thereof Download PDFInfo
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- CN103426655B CN103426655B CN201210147556.4A CN201210147556A CN103426655B CN 103426655 B CN103426655 B CN 103426655B CN 201210147556 A CN201210147556 A CN 201210147556A CN 103426655 B CN103426655 B CN 103426655B
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- morpholine
- ionic liquid
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- layer capacitor
- double
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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
Abstract
The invention discloses a kind of electrolyte for double-layer capacitor, the electrolyte for double-layer capacitor includes morpholine class ionic liquid and polyxyethylated alkylolamides, and the mass ratio of the morpholine class ionic liquid and polyxyethylated alkylolamides is 1：0.001 to 1：0.05.The invention also discloses a kind of preparation method of electrolyte for double-layer capacitor.The present invention can substantially reduce the equivalent internal resistance of double layer capacitor.
Description
Technical field
The present invention relates to a kind of electrolyte and preparation method thereof, more particularly to a kind of electrolyte for double-layer capacitor and its system
Preparation Method.
Background technology
Double layer capacitor is a kind of novel energy storage device, with high power density, high circulation life-span, fast charging and discharging
The advantages of performance is good, is widely used in the AC-battery power source of military field, device for mobile communication, computer and electric automobile
Deng.Used as the important component of double layer capacitor, electrolyte has a significant impact to the storing up electricity performance of double layer capacitor, certainly
Determine the equivalent internal resistance of capacitor, operating voltage range, storing up electricity capacity and operating temperature and working environment.
Ionic liquid is the organic liquid material being composed entirely of ions in room temperature or close under conditions of room temperature.As one
New electrolyte is planted, the application field of double layer capacitor has been expanded in the appearance of ionic liquid significantly.Morpholine class ionic liquid
It is one of il electrolyte of recent development, however, morpholine class viscosity of il is especially high, conventional with PP, PE etc.
The compatibility of diaphragm material is small so that the equivalent internal resistance of the double layer capacitor for making electrolyte with pure morpholine class ionic liquid is inclined
Greatly.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of electrolyte for double-layer capacitor and preparation method thereof, its
The internal resistance of double layer capacitor can be substantially reduced.
Solving the technical scheme that technical problem of the invention used is：A kind of electrolyte for double-layer capacitor, institute are provided
Stating electrolyte for double-layer capacitor includes morpholine class ionic liquid and polyxyethylated alkylolamides, the morpholine class ionic liquid
It is 1 with the mass ratio of polyxyethylated alkylolamides：0.001 to 1:0.05.
Preferably, the mass ratio of the morpholine class ionic liquid and polyxyethylated alkylolamides is 1：0.03 to 1:
0.05。
Preferably, the polyxyethylated alkylolamides is polyoxyethylene butane group acyl hydramine, polyoxyethylene pentyl acyl
One kind in hydramine, polyoxyethylene hexyl acyl hydramine, polyoxyethylene octyl acyl hydramine.
Preferably, the morpholine class ionic liquid by morpholine cationoid and tetrafluoro boric acid anion, hexafluorophosphoric acid it is cloudy from
Any one in son, two (trimethyl fluoride sulfonyl) imines anion, trifluoroacetic acid anion, trifluoromethane sulfonic acid anion is cloudy
Ion is constituted.
Preferably, the morpholine cationoid is Methylethyl morpholine cation, methyl-propyl morpholine cation, methyl fourth
One kind in base morpholine cation.
Solving another technical scheme that technical problem of the invention used is：A kind of electrolyte for double-layer capacitor is provided
Preparation method, the preparation method comprises the following steps：
Step one, mass ratio is taken for 1：0.001 to 1：0.05 morpholine class ionic liquid and polyxyethylated alkylolamides；
Step 2, the morpholine class ionic liquid in blend step one in glove box and polyxyethylated alkylolamides are simultaneously stirred
Mix 10~60 minutes, you can obtain the electrolyte for double-layer capacitor.
Preferably, in step one, the mass ratio of the morpholine class ionic liquid and polyxyethylated alkylolamides is 1：
0.03 to 1:0.05.
Preferably, the polyxyethylated alkylolamides is polyoxyethylene butane group acyl hydramine, polyoxyethylene pentyl acyl
One kind in hydramine, polyoxyethylene hexyl acyl hydramine, polyoxyethylene octyl acyl hydramine.
Preferably, the morpholine class ionic liquid by morpholine cationoid and tetrafluoro boric acid anion, hexafluorophosphoric acid it is cloudy from
Any one in son, two (trimethyl fluoride sulfonyl) imines anion, trifluoroacetic acid anion, trifluoromethane sulfonic acid anion is cloudy
Ion is constituted.
Preferably, the morpholine cationoid is Methylethyl morpholine cation, methyl-propyl morpholine cation, methyl fourth
One kind in base morpholine cation.
Relative to prior art, the present invention has advantages below：Due to morpholine class ionic liquid because viscosity is especially high, table
Face tension force is big, and the compatibility with the conventional diaphragm material such as PP, PE is small so that make the double of electrolyte with pure morpholine class ionic liquid
The equivalent internal resistance of electric layer capacitor is bigger than normal, after adding polyxyethylated alkylolamides in the morpholine class ionic liquid, because poly-
Oxygen vinyl alkyl alkylolamides is a kind of nonionic surfactant, and it can increase the capacitors such as morpholine class ionic liquid and PP, PE
The compatibility of conventional diaphragm material, so as to substantially reduce the equivalent internal resistance of double layer capacitor；Therefore, the present invention can be substantially reduced
The equivalent internal resistance of double layer capacitor.Additionally, preparation method of the invention is also very simple, it is easy to operate.
Brief description of the drawings
Fig. 1 is the AC impedance curve of the embodiment 1 of electrolyte for double-layer capacitor of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
In glove box (i.e. anaerobic it is anhydrous and by inert gas shielding in the case of), by mass ratio be 1：0.04 first
Base ethyl morpholine tetrafluoroborate and polyoxyethylene butane group acyl hydramine mix, after stirring 60 minutes, polyoxyethylene butane group acyl
Hydramine is dispersed in Methylethyl morpholine tetrafluoroborate, obtains a kind of electrolyte solution for electric double layer capacitor.
Embodiment 2 is different from the parameter of embodiment 1 to the parameter of embodiment 20, but preparation method step and test condition with
Embodiment 1 is identical, see the table below 1.
Table 1
Note：In the table, the ratio of equivalent internal resistance reduction is in corresponding embodiment, using double electricity of the present embodiment electrolyte
The equivalent internal resistance of layer capacitor is more double than the ionic liquid that the application that is measured under equal conditions is not added with polyxyethylated alkylolamides
The percentage of the equivalent internal resistance reduction of electric layer capacitor.
The test of equivalent internal resistance：With Graphene as electrode material, with each embodiment as electrolyte, button cell is assembled into
(barrier film is the materials such as conventional PP/PE), ac impedance measurement is carried out using CHI660A electrochemical workstations to it.
Fig. 1 is the AC impedance curve using capacitor obtained in the electrolyte in embodiment 1.Wherein, abscissa is real
Portion, ordinate is that (it is to process the plural number for drawing, ac impedance spectroscopy by Mathematical Modeling that AC impedance measures the data come to imaginary part
For complex number plane figure, real part and imaginary part correspond to real part and the imaginary part of Mathematical Modeling respectively)；From figure 1 it appears that
The equivalent internal resistance of the embodiment of the present invention 1 be 169 Ω (curve a), and the equivalent internal resistance of pure ionic liquid be 230 Ω (curve b), this
The equivalent internal resistance of inventive embodiments 1 is than the pure ionic liquid Methylethyl morpholine tetrafluoro boric acid salt electrolyte that is measured under equal conditions
Equivalent internal resistance it is low by 26.5%.
In a kind of electrolyte solution for electric double layer capacitor that the present invention is provided, due to morpholine class ionic liquid because viscosity is special
Not high, surface tension is big, and the compatibility with the diaphragm material such as PP, PE is small so that make electrolyte with pure morpholine class ionic liquid
The equivalent internal resistance of double layer capacitor is bigger than normal, after adding polyxyethylated alkylolamides in the morpholine class ionic liquid, because
Polyxyethylated alkylolamides is a kind of nonionic surfactant, and it can increase the electric capacity such as morpholine class ionic liquid and PP, PE
Device often uses the compatibility of diaphragm material, so as to substantially reduce the equivalent internal resistance of double layer capacitor；Therefore, the present invention can drop significantly
The equivalent internal resistance of low double layer capacitor.Additionally, preparation method of the invention is also very simple, it is easy to operate.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of electrolyte for double-layer capacitor, it is characterised in that the electrolyte for double-layer capacitor is by morpholine class ionic liquid
Body and polyxyethylated alkylolamides are constituted, and the mass ratio of the morpholine class ionic liquid and polyxyethylated alkylolamides is 1：
0.001 to 1：0.05, the polyxyethylated alkylolamides is polyoxyethylene butane group acyl hydramine, polyoxyethylene pentyl acyl alcohol
One kind in amine, polyoxyethylene hexyl acyl hydramine, polyoxyethylene octyl acyl hydramine, the morpholine class ionic liquid is by morpholine
Cationoid is constituted with any one anion in trifluoroacetic acid anion, trifluoromethane sulfonic acid anion.
2. electrolyte for double-layer capacitor according to claim 1, it is characterised in that the morpholine class ionic liquid and poly-
The mass ratio of oxygen vinyl alkyl alkylolamides is 1：0.03 to 1:0.05.
3. electrolyte for double-layer capacitor according to claim 1, it is characterised in that the morpholine cationoid is methyl
Ethyl morpholine cation, methyl-propyl morpholine cation, the one kind in methyl butyl morpholine cation.
4. a kind of preparation method of electrolyte for double-layer capacitor, it is characterised in that the preparation method comprises the following steps：
Step one, mass ratio is taken for 1：0.001 to 1：0.05 morpholine class ionic liquid and polyxyethylated alkylolamides；
Step 2, in glove box, morpholine class ionic liquid and polyxyethylated alkylolamides in blend step one are simultaneously stirred
10~60 minutes, you can obtain the electrolyte for double-layer capacitor.
5. preparation method according to claim 4, it is characterised in that in step one, the morpholine class ionic liquid and
The mass ratio of polyxyethylated alkylolamides is 1：0.03 to 1:0.05.
6. preparation method according to claim 4, it is characterised in that the polyxyethylated alkylolamides is polyoxyethylene
In butane group acyl hydramine, polyoxyethylene pentyl acyl hydramine, polyoxyethylene hexyl acyl hydramine, polyoxyethylene octyl acyl hydramine
One kind.
7. preparation method according to claim 4, it is characterised in that the morpholine class ionic liquid is by morpholine cationoid
With tetrafluoro boric acid anion, hexafluorophosphoric acid anion, two (trimethyl fluoride sulfonyl) imines anion, trifluoroacetic acid anion, three
Any one anion in methyl fluoride sulfonic acid anion is constituted.
8. preparation method according to claim 7, it is characterised in that the morpholine cationoid is Methylethyl morpholine sun
Ion, methyl-propyl morpholine cation, the one kind in methyl butyl morpholine cation.
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| CN201210147556.4A CN103426655B (en) | 2012-05-14 | 2012-05-14 | A kind of electrolyte for double-layer capacitor and preparation method thereof |
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| CN201210147556.4A CN103426655B (en) | 2012-05-14 | 2012-05-14 | A kind of electrolyte for double-layer capacitor and preparation method thereof |
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| CN103426655A CN103426655A (en) | 2013-12-04 |
| CN103426655B true CN103426655B (en) | 2017-06-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326821A (en) * | 2006-06-09 | 2007-12-20 | National Institute Of Advanced Industrial & Technology | New onium salt |
| CN101502770A (en) * | 2008-02-05 | 2009-08-12 | 赢创戈尔德施米特有限公司 | Performance additives for improving the wetting properties of ionic liquids on solid surfaces |
| JP2010287727A (en) * | 2009-06-11 | 2010-12-24 | Kaneka Corp | Electrolytic capacitor |
| CN102015666A (en) * | 2008-04-29 | 2011-04-13 | 默克专利有限公司 | Reactive ionic liquids |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2933814B1 (en) * | 2008-07-11 | 2011-03-25 | Commissariat Energie Atomique | IONIC LIQUID ELECTROLYTES COMPRISING A SURFACTANT AND ELECTROCHEMICAL DEVICES SUCH AS ACCUMULATORS COMPRISING SAME |
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2012
- 2012-05-14 CN CN201210147556.4A patent/CN103426655B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007326821A (en) * | 2006-06-09 | 2007-12-20 | National Institute Of Advanced Industrial & Technology | New onium salt |
| CN101502770A (en) * | 2008-02-05 | 2009-08-12 | 赢创戈尔德施米特有限公司 | Performance additives for improving the wetting properties of ionic liquids on solid surfaces |
| CN102015666A (en) * | 2008-04-29 | 2011-04-13 | 默克专利有限公司 | Reactive ionic liquids |
| JP2010287727A (en) * | 2009-06-11 | 2010-12-24 | Kaneka Corp | Electrolytic capacitor |
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