CA2137323C - Electric double-layer capacitor - Google Patents

Electric double-layer capacitor

Info

Publication number
CA2137323C
CA2137323C CA002137323A CA2137323A CA2137323C CA 2137323 C CA2137323 C CA 2137323C CA 002137323 A CA002137323 A CA 002137323A CA 2137323 A CA2137323 A CA 2137323A CA 2137323 C CA2137323 C CA 2137323C
Authority
CA
Canada
Prior art keywords
resin
electric double
layer capacitor
expanded graphite
carbon
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002137323A
Other languages
French (fr)
Other versions
CA2137323A1 (en
Inventor
Kazuo Saito
Atsushi Hagiwara
Toshiharu Okamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP5339729A external-priority patent/JPH07161589A/en
Application filed by Nisshinbo Industries Inc filed Critical Nisshinbo Industries Inc
Priority to CA002137323A priority Critical patent/CA2137323C/en
Publication of CA2137323A1 publication Critical patent/CA2137323A1/en
Application granted granted Critical
Publication of CA2137323C publication Critical patent/CA2137323C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H01G11/22—Electrodes
    • H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
    • H01G11/28—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
    • 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
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H01G11/32—Carbon-based
    • H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
    • 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
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H01G11/32—Carbon-based
    • H01G11/44—Raw materials therefor, e.g. resins or coal
    • 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
    • H01G11/22—Electrodes
    • H01G11/30—Electrodes characterised by their material
    • H01G11/32—Carbon-based
    • H01G11/38—Carbon pastes or blends; Binders or additives therein
    • 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

An electric double-layer capacitor comprising, as the positive electrode and the negative electrode, a material obtained by adhering a polarizable electrode on one or both sides of a conductive material by the use of a conductive adhesive, in which capacitor the polarizable electrodes are formed by a carbon material composed mainly of active carbon, amorphous carbon and expanded graphite, or the conductive adhesive is composed mainly of a resin and expanded graphite, or the polarizable electrodes are formed by a carbon material composed mainly of active carbon, amorphous carbon and expanded graphite and the conductive adhesive is composed mainly of a resin and expanded graphite.
The electric double-layer capacitor has a low internal resistance, gives substantially no change in internal resistance when subjected to repeated discharging, and has a long life.

Claims (19)

1. An electric double-layer capacitor comprising a positive electrode and a negative electrode, both made of a material obtained by adhering a polarizable electrode on one or both sides of a conductive material by the use of a conductive adhesive, in which capacitor the polarizable electrode is formed of a carbon material composed essentially of active carbon, amorphous carbon and expanded graphite.
2. An electric double-layer capacitor comprising a positive electrode and a negative electrode, both made of a material obtained by adhering a polarizable electrode on one or both sides of a conductive material by the use of a conductive adhesive, in which capacitor the conductive adhesive is composed essentially of a resin and expanded graphite.
3. An electric double-layer capacitor comprising a positive electrode and a negative electrode, both made of a material obtained by adhering a polarizable electrode on one or both sides of a conductive material by the use of a conductive adhesive, in which capacitor the polarizable electrode is formed of a carbon material composed essentially of active carbon, amorphous carbon and expanded graphite and the conductive adhesive is composed essentially of a resin and expanded graphite.
4. An electric double-layer capacitor according to any one of claims 1-3, wherein the conductive material is impervious to any liquid.
5. An electric double-layer capacitor according to claim 1 or 3, wherein the active carbon is powdery, particulate or fibrous.
6. An electric double-layer capacitor according to claim 1 or 3, wherein the amorphous carbon is obtained by pyrolyzing a thermosetting resin in a non-oxidizing atmosphere.
7. An electric double-layer capacitor according to claim 6, wherein the thermosetting resin is a polycarbodiimide resin, a phenolic resin, a furan resin or an epoxy resin.
8. An electric double-layer capacitor according to claim 1 or 3, wherein the carbon material is obtained by pyrolyzing, in a non-oxidizing atmosphere, a mixture consisting essentially of active carbon, expanded graphite and a thermosetting resin capable of becoming amorphous carbon when pyrolyzed in a non-oxidizing atmosphere.
9. An electric double-layer capacitor according to claim 8, wherein the thermosetting resin is a polycarbodiimide resin, a phenolic resin, a furan resin or an epoxy resin.
10. An electric double-layer capacitor according to claim 8, wherein the amount of the expanded graphite in the mixture is 0.01-1,000 parts by weight per 100 parts by weight of the active carbon.
11. An electric double-layer capacitor according to claim 8, wherein the amount of the thermosetting resin capable of becoming amorphous carbon when pyrolyzed in a non-oxidizing atmosphere, in the mixture is 0.5-100 parts by weight per 100 parts by weight of the active carbon.
12. An electric double-layer capacitor according to claim 2, wherein the resin is at least one resin selected from the group consisting of a polycarbodiimide resin, a phenolic resin, a furan resin, an epoxy resin, a urethane resin, an ABS resin, a polyphenylene sulfate resin, an acrylic resin, polyethylene, polypropylene, polyacetylene, an ethylene-vinyl acetate copolymer, polystyrene, pitch, polyethylene terephthalate, polybutylene terephthalate, an isobutyl-isoprene copolymer rubber, a butadiene rubber, a styrene rubber, a silicone rubber, an ethylene-propylene rubber, a nitrile rubber, an acrylic rubber, a urethane rubber, a fluororubber, polyvinyl butyral, methyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, ethyl hydroxyethyl cellulose and hydroxypropyl cellulose.
13. An electric double-layer capacitor according to claim 2, wherein the conductive adhesive contains a solvent.
14. An electric double-layer capacitor according to claim 11, wherein the solvent is at least one solvent selected from the group consisting of toluene, acetone, water, methanol, ethanol, propanol, tetrachloroethylene, trichloroethylene, bromochloromethane, diacetone, dimethylformamide, ethyl ether, cresol, xylene, chloroform, butanol and dimethyl ether.
15. An electric double-layer capacitor according to claim 2, wherein the amount of the expanded graphite in the conductive adhesive is 0.01-5,000 parts by weight per 100 parts by weight of the resin.
16. An electric double-layer capacitor comprising a positive electrode, a negative electrode and an electrolyte impregnated between the positive and negative electrodes, wherein:
each of the positive and negative electrodes is made of a laminate material produced by adhering a polarizable electrode on one or both sides of a conductive material impervious to any liquid by the use of a conductive adhesive, and (1) the polarizable electrode is formed of a pyrolyzed carbon material composed essentially of active carbon, amorphous carbon and expanded graphite and the conductive adhesive is composed essentially of an adhesive resin and a conductive material other than expanded graphite, or (2) the polarizable electrode is formed of a pyrolyzed carbon material composed essentially of active carbon and amorphous carbon and the conductive adhesive is composed essentially of an adhesive resin and expanded graphite, or (3) the polarizable electrode is formed of a pyrolyzed carbon material composed essentially of active carbon, amorphous carbon and expanded graphite and the conductive adhesive is composed essentially of an adhesive resin and expanded graphite.
17. An electric double-layer capacitor according to claim 16 (1), wherein the pyrolyzed carbon material is produced by pyrolyzing, in a non-oxidizing atmosphere, a mixture consisting essentially of active carbon, expanded graphite and a thermosetting resin capable of becoming amorphous carbon when pyrolyzed in a non-oxidizing atmosphere and wherein the conductive material in the adhesive resin other than expanded graphite is graphite.
18. An electric double-layer capacitor according to claim 16 (2), wherein the pyrolyzed carbon material is produced by pyrolyzing, in a non-oxidizing atmosphere, a mixture consisting essentially of active carbon and a thermosetting resin capable of becoming amorphous carbon when pyrolyzed in a non-oxidizing atmosphere.
19. An electric double-layer capacitor according to claim 16 (3), wherein the pyrolyzed carbon material is produced by pyrolyzing, in a non-oxidizing atmosphere, a mixture consisting essentially of active carbon, expanded graphite and a thermosetting resin capable of becoming amorphous carbon when pyrolyzed in a non-oxidizing atmosphere.
CA002137323A 1993-12-06 1994-12-05 Electric double-layer capacitor Expired - Fee Related CA2137323C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002137323A CA2137323C (en) 1993-12-06 1994-12-05 Electric double-layer capacitor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP05-339729 1993-12-06
JP5339729A JPH07161589A (en) 1993-12-06 1993-12-06 Electric double-layer capacitor
CA002137323A CA2137323C (en) 1993-12-06 1994-12-05 Electric double-layer capacitor

Publications (2)

Publication Number Publication Date
CA2137323A1 CA2137323A1 (en) 1995-06-07
CA2137323C true CA2137323C (en) 1999-09-07

Family

ID=29271280

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002137323A Expired - Fee Related CA2137323C (en) 1993-12-06 1994-12-05 Electric double-layer capacitor

Country Status (1)

Country Link
CA (1) CA2137323C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7799099B2 (en) 2005-06-24 2010-09-21 Universal Supercapacitors Llc Method of manufacturing a current collector for a double electric layer capacitor
US7919014B2 (en) 2006-11-27 2011-04-05 Universal Supercapacitors Llc Electrode for use with double electric layer electrochemical capacitors having high specific parameters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1894216T3 (en) * 2005-06-24 2013-06-24 Universal Supercapacitors Llc ELECTRODEMIC AND DOUBLE ELECTRICAL CHEMICAL CONDENSATOR WITH DOUBLE ELECTRICAL LAYER AND THEREFORE MANUFACTURED DOUBLE ELECTRICAL LAYER ELECTRICAL CONDENSOR
CN101663718B (en) 2007-02-19 2012-12-12 通用超级电容器公司 Negative electrode current collector for heterogeneous electrochemical capacitor and method of manufacture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7799099B2 (en) 2005-06-24 2010-09-21 Universal Supercapacitors Llc Method of manufacturing a current collector for a double electric layer capacitor
US7919014B2 (en) 2006-11-27 2011-04-05 Universal Supercapacitors Llc Electrode for use with double electric layer electrochemical capacitors having high specific parameters

Also Published As

Publication number Publication date
CA2137323A1 (en) 1995-06-07

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