JPWO2011070925A1 - 電気二重層キャパシタ - Google Patents
電気二重層キャパシタ Download PDFInfo
- Publication number
- JPWO2011070925A1 JPWO2011070925A1 JP2011545171A JP2011545171A JPWO2011070925A1 JP WO2011070925 A1 JPWO2011070925 A1 JP WO2011070925A1 JP 2011545171 A JP2011545171 A JP 2011545171A JP 2011545171 A JP2011545171 A JP 2011545171A JP WO2011070925 A1 JPWO2011070925 A1 JP WO2011070925A1
- Authority
- JP
- Japan
- Prior art keywords
- double layer
- electric double
- fluorine
- layer capacitor
- electrolytic solution
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 57
- 150000003839 salts Chemical class 0.000 claims abstract description 72
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 61
- 239000003792 electrolyte Substances 0.000 claims abstract description 57
- 239000011737 fluorine Substances 0.000 claims abstract description 51
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000002904 solvent Substances 0.000 claims abstract description 39
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 37
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 29
- -1 sulfolane compound Chemical class 0.000 claims abstract description 29
- 125000000217 alkyl group Chemical group 0.000 claims description 31
- 125000004432 carbon atom Chemical group C* 0.000 claims description 23
- 150000005678 chain carbonates Chemical class 0.000 claims description 15
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 12
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 8
- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- JOROOXPAFHWVRW-UHFFFAOYSA-N 1,1,1,2,3,3-hexafluoro-3-(2,2,3,3,3-pentafluoropropoxy)propane Chemical compound FC(F)(F)C(F)C(F)(F)OCC(F)(F)C(F)(F)F JOROOXPAFHWVRW-UHFFFAOYSA-N 0.000 claims description 3
- SEACXNRNJAXIBM-UHFFFAOYSA-N triethyl(methyl)azanium Chemical class CC[N+](C)(CC)CC SEACXNRNJAXIBM-UHFFFAOYSA-N 0.000 claims description 3
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 8
- 230000006866 deterioration Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 53
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 13
- 239000003575 carbonaceous material Substances 0.000 description 13
- 125000001153 fluoro group Chemical group F* 0.000 description 13
- 150000001450 anions Chemical group 0.000 description 11
- 229910001416 lithium ion Inorganic materials 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 8
- 239000006229 carbon black Substances 0.000 description 8
- 125000000524 functional group Chemical group 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 125000001033 ether group Chemical group 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 150000003863 ammonium salts Chemical class 0.000 description 6
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 6
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 4
- 150000004693 imidazolium salts Chemical class 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000006258 conductive agent Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000003273 ketjen black Substances 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Chemical class 0.000 description 3
- 239000002184 metal Chemical class 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- GKZFQPGIDVGTLZ-UHFFFAOYSA-N 4-(trifluoromethyl)-1,3-dioxolan-2-one Chemical compound FC(F)(F)C1COC(=O)O1 GKZFQPGIDVGTLZ-UHFFFAOYSA-N 0.000 description 2
- 229910017008 AsF 6 Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 229910018286 SbF 6 Inorganic materials 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000005011 alkyl ether group Chemical group 0.000 description 2
- 150000001449 anionic compounds Chemical class 0.000 description 2
- 229910021383 artificial graphite Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 125000005587 carbonate group Chemical group 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 239000000835 fiber Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910001412 inorganic anion Inorganic materials 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 150000002891 organic anions Chemical class 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002006 petroleum coke Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 1
- WKFQMDFSDQFAIC-UHFFFAOYSA-N 2,4-dimethylthiolane 1,1-dioxide Chemical compound CC1CC(C)S(=O)(=O)C1 WKFQMDFSDQFAIC-UHFFFAOYSA-N 0.000 description 1
- GEKLDGQKEZAPFZ-UHFFFAOYSA-N 2-(ethylamino)-1-(3-methylphenyl)propan-1-one Chemical compound CCNC(C)C(=O)C1=CC=CC(C)=C1 GEKLDGQKEZAPFZ-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- GDTSJMKGXGJFGQ-UHFFFAOYSA-N 3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound O1B([O-])OB2OB([O-])OB1O2 GDTSJMKGXGJFGQ-UHFFFAOYSA-N 0.000 description 1
- CMJLMPKFQPJDKP-UHFFFAOYSA-N 3-methylthiolane 1,1-dioxide Chemical compound CC1CCS(=O)(=O)C1 CMJLMPKFQPJDKP-UHFFFAOYSA-N 0.000 description 1
- VUZHZBFVQSUQDP-UHFFFAOYSA-N 4,4,5,5-tetrafluoro-1,3-dioxolan-2-one Chemical compound FC1(F)OC(=O)OC1(F)F VUZHZBFVQSUQDP-UHFFFAOYSA-N 0.000 description 1
- CRJXZTRTJWAKMU-UHFFFAOYSA-N 4,4,5-trifluoro-1,3-dioxolan-2-one Chemical compound FC1OC(=O)OC1(F)F CRJXZTRTJWAKMU-UHFFFAOYSA-N 0.000 description 1
- 229910016467 AlCl 4 Inorganic materials 0.000 description 1
- CPDYZBOAGVJKOE-UHFFFAOYSA-N B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].C(C)[N+](C)(CC)CC.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C Chemical compound B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].C(C)[N+](C)(CC)CC.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C.C(C)[N+](CC)(CC)C CPDYZBOAGVJKOE-UHFFFAOYSA-N 0.000 description 1
- KTDFMIFVMDINQW-UHFFFAOYSA-N B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC Chemical compound B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].B([O-])([O-])[O-].C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC KTDFMIFVMDINQW-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
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- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
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- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013131 LiN Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 229910012513 LiSbF 6 Inorganic materials 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
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- 241000282320 Panthera leo Species 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KPHGPGZVOHOUNI-UHFFFAOYSA-N S1(=O)(=O)CCCC1.[F] Chemical class S1(=O)(=O)CCCC1.[F] KPHGPGZVOHOUNI-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
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- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
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- 238000010494 dissociation reaction Methods 0.000 description 1
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- AEHVMUMGWLAZNV-UHFFFAOYSA-N ethyl propan-2-yl carbonate Chemical compound CCOC(=O)OC(C)C AEHVMUMGWLAZNV-UHFFFAOYSA-N 0.000 description 1
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- 150000002240 furans Chemical class 0.000 description 1
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- 125000005843 halogen group Chemical group 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
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- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- 125000004430 oxygen atom Chemical group O* 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- 229920000573 polyethylene Polymers 0.000 description 1
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- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
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Abstract
Description
Rf1−O−Rf2
(Rf1は炭素数が1〜10のフルオロアルキル基、Rf2は炭素数1〜4のフッ素原子を含んでいてもよいアルキル基)
で示される含フッ素鎖状エーテルがあげられる。上記式(Ib)において、Rf2が非フッ素系のアルキル基である場合に比して、Rf2が含フッ素アルキル基である場合、耐酸化性に優れ、電解質塩との相溶性に特に優れているほか、高い分解電圧をもつ点、凝固点が低いことから低温特性の維持ができる点で好ましい。
式:
式:
HCFX1c−
(式中、X1cはHまたはF)で示される部位を末端に有しかつフッ素含有率が10〜76質量%である含フッ素エーテル基;R2cは水素原子がハロゲン原子で置換されていてもよく、ヘテロ原子を鎖中に含んでいてもよいアルキル基)で示される含フッ素鎖状カーボネートなどがあげられる。
式(IIA):
式(IIA−1):
式(IIA−2):
などがあげられる。アルキルエーテル基を導入することにより、粘性の低下が図れる。
式(IIB):
式(IIC):
式(IID):
が好ましい。
P−(D)−Q (1−1)
[式中、Dは式(2−1):
−(D1)n−(FAE)m−(AE)p−(Y)q− (2−1)
(式中、D1は、式(2a):
FAEは、式(2b):
AEは、式(2c):
Yは、式(2d−1)〜(2d−3):
nは0〜200の整数;mは0〜200の整数;pは0〜10000の整数;qは1〜100の整数;ただしn+mは0ではなく、D1、FAE、AEおよびYの結合順序は特定されない);
PおよびQは同じかまたは異なり、水素原子、フッ素原子および/または架橋性官能基を含んでいてもよいアルキル基、フッ素原子および/または架橋性官能基を含んでいてもよいフェニル基、−COOH基、−OR19(R19は水素原子またはフッ素原子および/または架橋性官能基を含んでいてもよいアルキル基)、エステル基またはカーボネート基(ただし、Dの末端が酸素原子の場合は−COOH基、−OR19、エステル基およびカーボネート基ではない)]で表される側鎖に含フッ素基を有する非晶性含フッ素ポリエーテル化合物である。
(電極の作製)
活性炭粒子(クラレケミカル(株)製のYP50F、比表面積:1600m2/g、平均粒径6μm)を100重量部、導電助剤としてアセチレンブラック(電気化学工業(株)製のデンカブラック)を3重量部、ケッチェンブラック(ライオン(株)製のカーボンECP600JD)を16重量部、エラストマーバインダー(日本ゼオン(株)製のAZ−9001)を6重量部、界面活性剤(東亜合成(株)製のA10H)を3重量部混合して電極用スラリーを調製した。
上記作製した電極を31mm幅に切断した後、ニッポン高度紙工業(株)のTF45−30を34mm幅に切断して作製したセパレータと共にEDLC用捲回機により捲回した。その際、電極に電極引出し用のタブリードをカシメ接続して、直径16mmの円筒捲回体を作製した。
スルホランとHCF2CF2CH2OCF2CF2Hとジメチルカーボネートとを体積比65/15/20で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸スピロビピリジニウムトリエチルメチルアンモニウム(SBPBF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。
得られた電気二重層キャパシタについて、初期特性、耐電圧を測定した。結果を表1に示す。
キャパシタの捲回セルに電子電源を接続した後、捲回セルに定電流充電しながら規定電圧まで充電電圧を上昇させる。充電電圧が規定電圧に到達してから10分間定電圧状態を維持し、充電電流が十分に降下しかつ飽和状態になったことを確認した後、定電流放電を開始し、0.1秒毎にセル電圧を計測する。キャパシタの静電容量(F)および内部抵抗(mΩ)は、社団法人電子情報技術産業協会(JEITA)のRC2377の計測方法に従って計測する。
電源電圧:3.0および3.1V
放電電流:500mA(作製した捲回セルの実測静電容量は50F)
捲回セル型キャパシタを温度70℃の恒温槽中に入れ、電圧3.0V、3.1Vを500時間印加して静電容量と内部抵抗を測定する。測定時期は、初期(0時間)、157時間、337時間、500時間および1000時間とする。得られた測定値から、つぎの計算式に従って静電容量保持率(%)および内部抵抗上昇率(%)を算出した。結果を表1に示す。
スルホランとHCF2CF2CH2OCF2CF2Hとジメチルカーボネートとを体積比65/15/20で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒にトリエチルメチルアンモニウム(TEMABF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
スルホランとHCF2CF2CH2OCF2CF2Hを体積比75/25で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸スピロビピリジニウム(SBPBF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
スルホランとHCF2CF2CH2OCF2CF2Hを体積比75/25で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸トリエチルメチルアンモニウム(TEMABF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
スルホランとHCF2CF2CH2OCF2CF2Hとエチルメチルカーボネートとを体積比65/15/20で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒にトリエチルメチルアンモニウム(TEMABF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
HCF2CF2CH2OCF2CF2Hとプロピレンカーボネートを体積比20/80で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸スピロビピリジニウム(SBPBF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
スルホランとジメチルカーボネートとを体積比75/25で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸スピロビピリジニウム(SBPBF4)を1.2モル/リットル濃度となるように加えたところ、均一に溶解した。得られた溶液を電解液として用い、実施例1と同様にして作製した捲回セル型の電気二重層キャパシタについて各種の試験を行った。結果を表1に示す。
HCF2CF2CH2OCF2CF2Hとジメチルカーボネートを体積比20/80で混合して電解質塩溶解用溶媒を調製した。この電解質塩溶解用溶媒に4フッ化ホウ酸スピロビピリジニウム(SBPBF4)を加えたが、均一に溶解しなかった。
Claims (7)
- 電解質塩溶解用溶媒(I)と電解質塩(II)とを含み、電解質塩溶解用溶媒(I)がスルホラン化合物および含フッ素鎖状エーテルを含むことを特徴とする電気二重層キャパシタ用電解液。
- 前記スルホラン化合物が、スルホランである請求項1記載の電気二重層キャパシタ用電解液。
- 前記含フッ素鎖状エーテルが、Rf1−O−Rf2(Rf1は炭素数が1〜10のフルオロアルキル基、Rf2は炭素数1〜4のフッ素を含んでいてもよいアルキル基)である請求項1記載の電気二重層キャパシタ用電解液。
- 前記含フッ素鎖状エーテルが、HCF2CF2CH2OCF2CFHCF3、HCF2CF2CH2OCF2CF2H、CF3CF2CH2OCF2CFHCF3およびCF3CF2CH2OCF2CF2Hよりなる群から選ばれる少なくとも1種である請求項1記載の電気二重層キャパシタ用電解液。
- 前記電解質塩溶解用溶媒(I)が、環状カーボネートおよび鎖状カーボネートよりなる群から選ばれる少なくとも1種を含む請求項1〜4のいずれかに記載の電気二重層キャパシタ用電解液。
- 前記電解質塩(II)が、スピロビピリジニウム塩、トリエチルメチルアンモニウム塩またはテトラエチルアンモニウム塩である請求項1〜5のいずれかに記載の電気二重層キャパシタ用電解液。
- 請求項1〜6のいずれかに記載の電解液、ならびに正極および負極を備える電気二重層キャパシタ。
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KR20120090095A (ko) | 2012-08-16 |
EP2511923A4 (en) | 2018-04-11 |
WO2011070925A1 (ja) | 2011-06-16 |
KR101375450B1 (ko) | 2014-03-17 |
EP2511923A1 (en) | 2012-10-17 |
US20120243145A1 (en) | 2012-09-27 |
TW201203299A (en) | 2012-01-16 |
JP5392355B2 (ja) | 2014-01-22 |
CN102667984A (zh) | 2012-09-12 |
CN102667984B (zh) | 2014-11-05 |
US8767376B2 (en) | 2014-07-01 |
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