CN102496469A - High-power double electric layer capacitor - Google Patents
High-power double electric layer capacitor Download PDFInfo
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- CN102496469A CN102496469A CN201110397902XA CN201110397902A CN102496469A CN 102496469 A CN102496469 A CN 102496469A CN 201110397902X A CN201110397902X A CN 201110397902XA CN 201110397902 A CN201110397902 A CN 201110397902A CN 102496469 A CN102496469 A CN 102496469A
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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 provides a high-power double electric layer capacitor with working voltage of 3V. An electrolyte solute of the double electric layer capacitor is 5-Azoniaspiro[4.4]nonane, tetrafluoroborate(1-) of which the molecular formula is C8H16N.BF4; and a solvent of an organic electrolyte consists of acetonitrile (CH3CN) and 3-methylsulfolane serving as a high-temperature stabilizer, wherein the molecular formula of the 3-methylsulfolane is C5H10O2S; and the mass ratio of a positive active substance to a negative active substance of the double electric layer capacitor is within 1.1-1.3. The high-power double electric layer capacitor disclosed by the invention has the beneficial effects that the high-stability single solute 5-Azoniaspiro[4.4]nonane, tetrafluoroborate(1-) is utilized, and the mass ratio of the positive active substance to the negative active substance is regulated to improve working voltage of the double electric layer capacitor, and specific energy and specific power of the double electric layer capacitor can be improved further; simultaneously, the 3-methylsulfolane serving as a high-temperature stabilizer is added to the electrolyte, thus high temperature performance of the double electric layer capacitor is improved, and the double electric layer capacitor cab be successfully applied to fields of new energy sources, aerospace, aviation and military having higher temperature requirements.
Description
Technical field
The present invention relates to the double electric layer capacitor technical field, particularly relating to a kind of operating voltage is the high power double electric layer capacitor of 3V.
Background technology
Electrochemical capacitor in double electrode layer (EDLC) is meant to have considerably beyond the traditional capacitor capacity, utilize the device of electric double layer charge-discharge principle; General both positive and negative polarity all adopts same active material; Like activated carbon, carbon fiber, carbon cloth, carbon aerogels, CNT, carbon black, Graphene; As electrode active material, electric double layer of each self-forming attracts electrically opposite equivalent electric charge respectively.Be characterized in bigger than electric capacity, specific power is high, have extended cycle life, serviceability temperature wide ranges and environmentally friendly, have broad application prospects.Therefore electrode material is one of key of decision EDLC performance, and its preparation technology and chemical property have a large amount of correlative studys, and the research of relevant EDLC system is less relatively.
The general positive and negative electrode quality of existing EDLC equates; And in fact positive and negative electrode shows different electrochemical behaviors at separately polarized area; Make the positive and negative electrode specific capacity that bigger difference arranged; Therefore exist the matching problem of positive and negative electrode, promptly how the charcoal of certain total amount distributes at positive and negative electrode, just makes the best performance of EDLC.
Simultaneously, though the capacity of EDLC is a lot of greatly with respect to traditional capacitor, have extended cycle life, coulombic efficiency is high, with respect to lithium ion battery, its specific energy is little, operating voltage is low.Compare with the inorganic electrolyte liquid system, the operating voltage and the specific energy of organic electrolyte system are higher, are the development trends of EDLC, if can further improve its operating voltage, and its specific energy is also increased considerably.Because the conductivity of organic electrolyte is little,, influenced the power characteristic of organic system EDLC simultaneously, therefore how in the energy response that improves organic system EDLC, to have guaranteed that its power characteristic then is a difficult point approximately than low two one magnitude of inorganic electrolyte liquid.
Electrolyte at present commonly used select generally that decomposition voltage is higher, dielectric constant is higher for use and low-temperature characteristics preferably acetonitrile as solvent; Adopt tetraethyl tetrafluoro boric acid amine salt or triethyl group monomethyl tetrafluoro boric acid amine salt as solute simultaneously; The electrolysis fluid power of this prescription is obtained the favorable conductive effect; But, therefore can influence the high-temperature behavior of EDLC owing to the boiling point lower (81 ℃) of acetonitrile.And if select the better solvent of other high-temperature behaviors for use, like propene carbonate PC, then can cause the internal resistance of EDLC to increase, make the use field of double electric layer capacitor EDLC be restricted.
Adopt the power density of the symmetric form EDLC of above-mentioned organic electrolyte system commonly used generally can reach 5000-6000 W/Kg at present, but have only 2.7V owing to operating voltage is the highest, when operating voltage is higher than 2.7V, solute tetraethyl tetrafluoro boric acid amine salt (Et
4NBF
4) can decompose, so energy density is on the low side, can only reach 3-5Wh/Kg, receives the restriction of electrolyte solvent simultaneously, high-temperature behavior is not good.
Summary of the invention
The objective of the invention is to propose the high power double electric layer capacitor that a kind of operating voltage is 3V, improve the power characteristic and the high-temperature behavior of double electric layer capacitor.
The present invention proposes the high power double electric layer capacitor that a kind of operating voltage is 3V; The electrolyte solute of said double electric layer capacitor is two fourth ring ammonium tetrafluoroborates; 5-Azoniaspiro [4.4] nonane, tetrafluoroborate (1-), molecular formula is C8H16N.BF4; The solvent of organic electrolyte is by acetonitrile (CH
3CN) and high-temperature stabiliser 3-methyl sulfolane, molecular formula is C
5H
10O
2S forms; The quality proportioning of double electric layer capacitor both positive and negative polarity active material is 1.1～1.3.
Wherein, the active material of said double electric layer capacitor both positive and negative polarity is any or several kinds in activated carbon, carbon fiber, carbon cloth, carbon aerogels, CNT, carbon black, the Graphene.
More excellent ground, the quality proportioning of said both positive and negative polarity active material is 1.20.
Preferably, said both positive and negative polarity active material is a carbon fiber, and both positive and negative polarity quality proportioning is 1.15.
Preferably, said both positive and negative polarity active material is a carbon cloth, and both positive and negative polarity quality proportioning is 1.21.
Preferably, said both positive and negative polarity active material is a carbon aerogels, and both positive and negative polarity quality proportioning is 1.22.
Preferably, said both positive and negative polarity active material is a CNT, and both positive and negative polarity quality proportioning is 1.17.
Preferably, said both positive and negative polarity active material is a carbon black, and both positive and negative polarity quality proportioning is 1.25.
Preferably, said both positive and negative polarity active material is a Graphene, and both positive and negative polarity quality proportioning is 1.12.
Double electric layer capacitor of the present invention adopts two fourth ring ammonium tetrafluoroborate 5-Azoniaspiro [4.4] nonane of the single solute of high stability, and tetrafluoroborate (1-) is through regulating the quality proportioning between the both positive and negative polarity active material; Improve the operating voltage of double electric layer capacitor; Operating voltage can be brought up to 3.0V by traditional 2.7V, thereby improves the specific energy and the specific power of capacitor, and its specific energy can arrive 8Wh/kg; Specific power can reach 6000W/kg, and cycle life can reach 1,200,000 times.Simultaneously,, improve the high-temperature behavior of double electric layer capacitor, double electric layer capacitor can be successfully applied to temperature requirement than higher new forms of energy, space flight, aviation field and military field through in electrolyte, adding high-temperature stabiliser 3-methyl sulfolane.
Embodiment
The implementation method of high power double electric layer capacitor according to embodiments of the present invention at first will be described below.Below the preparation method only be used for explanation of the present invention, rather than to the restriction of scope of the present invention.
Double electric layer capacitor of the present invention adopts single solute 5-Azoniaspiro [4.4] nonane of high stability; Tetrafluoroborate (1-); Structural formula is
, and molecular formula is C8H16N.BF4.In electrolyte, add high-temperature stabiliser 3-methyl sulfolane, structural formula does
, molecular formula is C
5H
10O
2S.
Embodiment 1
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane; Solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 2
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.1:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane; Solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 3
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.2:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane; Solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 4
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.2:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane, solute is the tetraethyl ammonium tetrafluoroborate (Et of 1mol/L
4NBF
4), be prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 5
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.3:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane; Solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 6
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.4:1, adopts the paper barrier film as barrier film, and the solvent of electrolyte is an acetonitrile; And be added with high-temperature stabiliser 3-methyl sulfolane; Solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 7
Adopt active carbon to prepare pole piece as active material; The quality proportioning of both positive and negative polarity active material is 1.2:1; Adopt the paper barrier film as barrier film, the solvent of electrolyte is an acetonitrile, and solute is 5-Azoniaspiro [4.4] nonane of 1mol/L; Tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 8
Adopt carbon fiber to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.1:1, adopts composite membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 9
Adopt carbon fiber to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.15:1, adopts composite membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 10
Adopt carbon fiber to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.2:1, adopts composite membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 11
Adopt carbon fiber to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.3:1, adopts composite membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 12
Adopt carbon cloth to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.21:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 13
Adopt carbon cloth to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.25:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 14
Adopt carbon aerogels to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.22:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 15
Adopt CNT to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.17:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 16
Adopt carbon black to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.25:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 17
Adopt Graphene to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.12:1, adopts microporous polypropylene membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer of lamination square aluminum plastic film flexible package.
Embodiment 18
Adopt active carbon to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.2:1, adopts polyethene microporous membrane as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer that coiling column shape aluminum hull is packed.
Embodiment 19
Adopt active carbon to prepare pole piece as active material, the quality proportioning of both positive and negative polarity active material is 1.2:1, adopts the nonwoven fabrics barrier film as barrier film, and the solvent of electrolyte is acetonitrile (CH
3CN), and be added with high-temperature stabiliser 3-methyl sulfolane, solute is 5-Azoniaspiro [4.4] nonane of 1mol/L, and tetrafluoroborate (1-) is prepared into the double electric layer capacitor monomer that the square box hat of reeling is packed.
The performance test of the double electric layer capacitor of making according to the present invention:
The test system that cycle life adopts is (25-30 a ℃) under the normal temperature, 100% depth of discharge (DOD), and 20A charges and discharge, when capacity attenuation is initial to finish 80% the time.
High-temperature load method of life system is under 65 ℃ of conditions of high temperature, 100% capacity retention SOC, behind the constant voltage certain hour with 20A discharge and recharge, the charge/discharge capacity of 100%DOD test capacitors, capacity attenuation is 80% o'clock initial high-temperature load end-of-life.
The chemical property that the sample that obtains produced according to the present invention records is as shown in table 1 respectively.
The performance test of the double electric layer capacitor that table 1 the present invention makes
| ? | Operating voltage (V) | The cycle life life-span (inferior) | The high-temperature load life-span (hour) | Power density (W/kg) | Energy density (Wh/kg) |
| Embodiment 1 | 3.0 | 450000 | 900 | 5500 | 7.2 |
| Embodiment 2 | 3.0 | 1000000 | 1100 | 5600 | 7.5 |
| Embodiment 3 | 3.0 | 1250000 | 1500 | 6000 | 8.1 |
| Embodiment 4 | 3.0 | 250000 | 500 | 6000 | 7.9 |
| Embodiment 5 | 3.0 | 1100000 | 1200 | 6000 | 7.9 |
| Embodiment 6 | 3.0 | 600000 | 1100 | 5400 | 6.5 |
| Embodiment 7 | 3.0 | 1250000 | 900 | 6000 | 8.1 |
| Embodiment 8 | 3.0 | 1150000 | 1100 | 5500 | 6.1 |
| Embodiment 9 | 3.0 | 1200000 | 1300 | 5950 | 6.5 |
| Embodiment 10 | 3.0 | 1100000 | 1100 | 5920 | 6.0 |
| Embodiment 11 | 3.0 | 1000000 | 1000 | 5500 | 5.9 |
| Embodiment 12 | 3.0 | 1050000 | 1100 | 5000 | 5.5 |
| Embodiment 13 | 3.0 | 980000 | 1000 | 4500 | 5.6 |
| Embodiment 14 | 3.0 | 1120000 | 1100 | 5600 | 7.2 |
| Embodiment 15 | 3.0 | 1280000 | 1200 | 6000 | 4.9 |
| Embodiment 16 | 3.0 | 1150000 | 1200 | 4900 | 6.0 |
| Embodiment 17 | 3.0 | 1000000 | 1100 | 6000 | 6.5 |
| Embodiment 18 | 3.0 | 1290000 | 1500 | 6100 | 8.1 |
| Embodiment 19 | 3.0 | 1260000 | 1500 | 5500 | 7.5 |
Can find out from table 1, use acetonitrile (CH among the present invention
3CN) as solvent, 5-Azoniaspiro [4.4] nonane that stability in use is splendid, tetrafluoroborate (1-) is a solute, with the tetraethyl ammonium tetrafluoroborate (Et that uses routine
4NBF
4) be solute, under the same proportioning, cycle life increases greatly; Different electrode active materials is different with the energy response influence degree to the power characteristic of double electric layer capacitor, and different electrode active material has different best both positive and negative polarity quality proportionings.With the electrode active material is that active carbon is an example, when both positive and negative polarity quality proportioning is 1.0, when operating voltage is 3.0V; Cycle life and high-temperature load life-span are all relatively poor, and therefore as making ultracapacitor reach cycle life 1,000,000 times, operating voltage must be lower than 3.0V; And when both positive and negative polarity quality proportioning was brought up between the 1.1-1.3, its operating voltage can be elevated to 3.0V, and power characteristic and energy response all increase simultaneously; When both positive and negative polarity quality proportioning was 1.2, power density reached 6000w/kg, and energy density reaches 8.1wh/kg; And when both positive and negative polarity quality proportioning continues to rise to 1.4, though can enlarge the reaction interval of negative pole, because anodal simultaneously polarization interval range narrows down; So cause the life-span variation of double electric layer capacitor on the contrary, real work voltage reduces.Therefore, concerning absorbent charcoal material, when the both positive and negative polarity proportioning between 1.1-1.3 during arbitrary value, all can obtain operating voltage is the high power double electric layer capacitor of 3V, but also has best both positive and negative polarity proportioning 1.2 simultaneously, this moment, each item performance of EDLC reached optimum.In addition, from table 1, can see, be added with high-temperature stabiliser 3-methyl sulfolane (C
5H
10O
2S), good effect is played in the raising in high-temperature load life-span.
Described in this specification is preferred embodiment of the present invention, and above embodiment is only in order to explain technical scheme of the present invention but not limitation of the present invention.All those skilled in the art all should be within scope of the present invention under this invention's idea through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (9)
1. high power double electric layer capacitor that operating voltage is 3V; It is characterized in that the electrolyte solute of said double electric layer capacitor is two fourth ring ammonium tetrafluoroborates, 5-Azoniaspiro [4.4] nonane; Tetrafluoroborate (1-), molecular formula is C8H16N.BF4; The solvent of organic electrolyte is by acetonitrile (CH
3CN) and high-temperature stabiliser 3-methyl sulfolane, molecular formula is C
5H
10O
2S forms; The quality proportioning of double electric layer capacitor both positive and negative polarity active material is 1.1～1.3.
2. double electric layer capacitor according to claim 1 is characterized in that, the active material of said double electric layer capacitor both positive and negative polarity is any or several kinds in activated carbon, carbon fiber, carbon cloth, carbon aerogels, CNT, carbon black, the Graphene.
3. double electric layer capacitor according to claim 2 is characterized in that, the quality proportioning of said both positive and negative polarity active material is 1.20.
4. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a carbon fiber, and both positive and negative polarity quality proportioning is 1.15.
5. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a carbon cloth, and both positive and negative polarity quality proportioning is 1.21.
6. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a carbon aerogels, and both positive and negative polarity quality proportioning is 1.22.
7. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a CNT, and both positive and negative polarity quality proportioning is 1.17.
8. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a carbon black, and both positive and negative polarity quality proportioning is 1.25.
9. double electric layer capacitor according to claim 1 is characterized in that, said both positive and negative polarity active material is a Graphene, and both positive and negative polarity quality proportioning is 1.12.
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|---|---|---|---|
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| CN201110397902XA CN102496469A (en) | 2011-12-05 | 2011-12-05 | High-power double electric layer capacitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050292A (en) * | 2012-12-20 | 2013-04-17 | 上海奥威科技开发有限公司 | High-power double-electric layer capacitor |
| CN109637820A (en) * | 2018-11-30 | 2019-04-16 | 同济大学 | A kind of asymmetric high-energy density double layer capacitor |
| CN113396496A (en) * | 2018-12-05 | 2021-09-14 | 昭和电工材料株式会社 | Electrolyte solution and electrochemical device |
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|---|---|---|---|---|
| US6469888B1 (en) * | 1999-11-25 | 2002-10-22 | Bridgestone Corporation | Non-aqueous electrolyte electric double-layer capacitor |
| US20060274475A1 (en) * | 2003-08-29 | 2006-12-07 | Kazumi Chiba | Electrolytic solution for electric double layer capacitor and electric double layer capacitor |
| US20070049750A1 (en) * | 2005-08-30 | 2007-03-01 | Honeywell International Inc. | Method for synthesizing spiro quartenary ammonium systems |
| CN101853742A (en) * | 2009-03-31 | 2010-10-06 | Tdk株式会社 | Double electric layer capacitor |
-
2011
- 2011-12-05 CN CN201110397902XA patent/CN102496469A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6469888B1 (en) * | 1999-11-25 | 2002-10-22 | Bridgestone Corporation | Non-aqueous electrolyte electric double-layer capacitor |
| US20060274475A1 (en) * | 2003-08-29 | 2006-12-07 | Kazumi Chiba | Electrolytic solution for electric double layer capacitor and electric double layer capacitor |
| US20070049750A1 (en) * | 2005-08-30 | 2007-03-01 | Honeywell International Inc. | Method for synthesizing spiro quartenary ammonium systems |
| CN101853742A (en) * | 2009-03-31 | 2010-10-06 | Tdk株式会社 | Double electric layer capacitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050292A (en) * | 2012-12-20 | 2013-04-17 | 上海奥威科技开发有限公司 | High-power double-electric layer capacitor |
| CN109637820A (en) * | 2018-11-30 | 2019-04-16 | 同济大学 | A kind of asymmetric high-energy density double layer capacitor |
| CN113396496A (en) * | 2018-12-05 | 2021-09-14 | 昭和电工材料株式会社 | Electrolyte solution and electrochemical device |
| CN113396500A (en) * | 2018-12-05 | 2021-09-14 | 昭和电工材料株式会社 | Electrolyte solution and electrochemical device |
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Application publication date: 20120613 |