JP2005344104A - イオン性基を有するポリマー、高分子電解質材料、高分子電解質部品、膜電極複合体、および高分子電解質型燃料電池 - Google Patents
イオン性基を有するポリマー、高分子電解質材料、高分子電解質部品、膜電極複合体、および高分子電解質型燃料電池 Download PDFInfo
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- JP2005344104A JP2005344104A JP2005131121A JP2005131121A JP2005344104A JP 2005344104 A JP2005344104 A JP 2005344104A JP 2005131121 A JP2005131121 A JP 2005131121A JP 2005131121 A JP2005131121 A JP 2005131121A JP 2005344104 A JP2005344104 A JP 2005344104A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 198
- 125000003010 ionic group Chemical group 0.000 title claims abstract description 168
- 239000012528 membrane Substances 0.000 title claims abstract description 107
- 239000000446 fuel Substances 0.000 title claims abstract description 103
- 239000005518 polymer electrolyte Substances 0.000 title claims abstract description 92
- 239000000463 material Substances 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title abstract description 7
- 125000003118 aryl group Chemical group 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 125000006575 electron-withdrawing group Chemical group 0.000 claims description 29
- 125000004432 carbon atom Chemical group C* 0.000 claims description 9
- 125000000732 arylene group Chemical group 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 150000002894 organic compounds Chemical class 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 239000011669 selenium Substances 0.000 claims description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 114
- -1 nickel metal hydride Chemical class 0.000 description 84
- 238000000034 method Methods 0.000 description 51
- 239000002904 solvent Substances 0.000 description 40
- 239000000243 solution Substances 0.000 description 36
- 125000000542 sulfonic acid group Chemical group 0.000 description 35
- 239000003054 catalyst Substances 0.000 description 34
- 230000015572 biosynthetic process Effects 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 21
- 229920000557 Nafion® Polymers 0.000 description 20
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 17
- 239000000758 substrate Substances 0.000 description 17
- 238000000576 coating method Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 16
- 238000006116 polymerization reaction Methods 0.000 description 16
- ZFVMWEVVKGLCIJ-UHFFFAOYSA-N bisphenol AF Chemical compound C1=CC(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C=C1 ZFVMWEVVKGLCIJ-UHFFFAOYSA-N 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 15
- 150000003839 salts Chemical class 0.000 description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 14
- 125000000962 organic group Chemical group 0.000 description 14
- 238000003786 synthesis reaction Methods 0.000 description 14
- 235000010290 biphenyl Nutrition 0.000 description 13
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 13
- YWFPGFJLYRKYJZ-UHFFFAOYSA-N 9,9-bis(4-hydroxyphenyl)fluorene Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C2=CC=CC=C21 YWFPGFJLYRKYJZ-UHFFFAOYSA-N 0.000 description 12
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 12
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 238000006277 sulfonation reaction Methods 0.000 description 11
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 10
- LSQARZALBDFYQZ-UHFFFAOYSA-N 4,4'-difluorobenzophenone Chemical compound C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 LSQARZALBDFYQZ-UHFFFAOYSA-N 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 10
- 239000004917 carbon fiber Substances 0.000 description 10
- XTHPWXDJESJLNJ-UHFFFAOYSA-N chlorosulfonic acid Substances OS(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-N 0.000 description 10
- 239000010416 ion conductor Substances 0.000 description 10
- 238000010248 power generation Methods 0.000 description 10
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 9
- 125000000217 alkyl group Chemical group 0.000 description 9
- 239000004020 conductor Substances 0.000 description 9
- 150000002500 ions Chemical class 0.000 description 9
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 9
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000012298 atmosphere Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 8
- 239000000178 monomer Substances 0.000 description 8
- 125000001424 substituent group Chemical group 0.000 description 8
- BATCUENAARTUKW-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)-diphenylmethyl]phenol Chemical compound C1=CC(O)=CC=C1C(C=1C=CC(O)=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 BATCUENAARTUKW-UHFFFAOYSA-N 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 7
- 239000002585 base Substances 0.000 description 7
- 239000004305 biphenyl Substances 0.000 description 7
- JHRWWRDRBPCWTF-OLQVQODUSA-N captafol Chemical group C1C=CC[C@H]2C(=O)N(SC(Cl)(Cl)C(Cl)Cl)C(=O)[C@H]21 JHRWWRDRBPCWTF-OLQVQODUSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 125000005843 halogen group Chemical group 0.000 description 7
- 229920006158 high molecular weight polymer Polymers 0.000 description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 7
- 239000004745 nonwoven fabric Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 238000006467 substitution reaction Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 0 CC(C)(C)Oc1ccc(C2(c3ccccc3-c3c2cccc3)c(cc2)ccc2Oc(c(C)c2)ccc2C(c2ccc(C(C)(C)*)c(C)c2)=O)cc1 Chemical compound CC(C)(C)Oc1ccc(C2(c3ccccc3-c3c2cccc3)c(cc2)ccc2Oc(c(C)c2)ccc2C(c2ccc(C(C)(C)*)c(C)c2)=O)cc1 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 6
- 125000002843 carboxylic acid group Chemical group 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 6
- TXOMILLKBNFCOJ-UHFFFAOYSA-L disodium;2-fluoro-5-(4-fluoro-3-sulfonatobenzoyl)benzenesulfonate Chemical compound [Na+].[Na+].C1=C(F)C(S(=O)(=O)[O-])=CC(C(=O)C=2C=C(C(F)=CC=2)S([O-])(=O)=O)=C1 TXOMILLKBNFCOJ-UHFFFAOYSA-L 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 125000001188 haloalkyl group Chemical group 0.000 description 6
- 229960004337 hydroquinone Drugs 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 6
- 229920000570 polyether Polymers 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- XCZKKZXWDBOGPA-UHFFFAOYSA-N 2-phenylbenzene-1,4-diol Chemical group OC1=CC=C(O)C(C=2C=CC=CC=2)=C1 XCZKKZXWDBOGPA-UHFFFAOYSA-N 0.000 description 5
- GPAPPPVRLPGFEQ-UHFFFAOYSA-N 4,4'-dichlorodiphenyl sulfone Chemical compound C1=CC(Cl)=CC=C1S(=O)(=O)C1=CC=C(Cl)C=C1 GPAPPPVRLPGFEQ-UHFFFAOYSA-N 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 229920001940 conductive polymer Polymers 0.000 description 5
- 238000000921 elemental analysis Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000007654 immersion Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 4
- PLVUIVUKKJTSDM-UHFFFAOYSA-N 1-fluoro-4-(4-fluorophenyl)sulfonylbenzene Chemical compound C1=CC(F)=CC=C1S(=O)(=O)C1=CC=C(F)C=C1 PLVUIVUKKJTSDM-UHFFFAOYSA-N 0.000 description 4
- MVRPPTGLVPEMPI-UHFFFAOYSA-N 2-cyclohexylphenol Chemical compound OC1=CC=CC=C1C1CCCCC1 MVRPPTGLVPEMPI-UHFFFAOYSA-N 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- FLMZHPQIDVOWEJ-UHFFFAOYSA-N 4-[9-(4-hydroxy-3-phenylphenyl)fluoren-9-yl]-2-phenylphenol Chemical compound OC1=CC=C(C2(C3=CC=CC=C3C3=CC=CC=C32)C=2C=C(C(O)=CC=2)C=2C=CC=CC=2)C=C1C1=CC=CC=C1 FLMZHPQIDVOWEJ-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 125000001624 naphthyl group Chemical group 0.000 description 4
- 229920002239 polyacrylonitrile Polymers 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 230000005588 protonation Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 238000004448 titration Methods 0.000 description 4
- 239000002759 woven fabric Substances 0.000 description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 3
- FOIPESFJJNAWLG-UHFFFAOYSA-N 1-chloro-4-[(4-chlorophenyl)-phenylphosphoryl]benzene Chemical compound C1=CC(Cl)=CC=C1P(=O)(C=1C=CC(Cl)=CC=1)C1=CC=CC=C1 FOIPESFJJNAWLG-UHFFFAOYSA-N 0.000 description 3
- UXCCPVBMHBSZHM-UHFFFAOYSA-N 2-fluoro-5-(4-fluoro-3-sulfobenzoyl)benzenesulfonic acid Chemical compound C1=C(F)C(S(=O)(=O)O)=CC(C(=O)C=2C=C(C(F)=CC=2)S(O)(=O)=O)=C1 UXCCPVBMHBSZHM-UHFFFAOYSA-N 0.000 description 3
- OKISUZLXOYGIFP-UHFFFAOYSA-N 4,4'-dichlorobenzophenone Chemical compound C1=CC(Cl)=CC=C1C(=O)C1=CC=C(Cl)C=C1 OKISUZLXOYGIFP-UHFFFAOYSA-N 0.000 description 3
- YFWMKHJNNZCGHF-UHFFFAOYSA-N 4-[1,1,2,2-tetrafluoro-2-(4-hydroxyphenyl)ethyl]phenol Chemical compound C1=CC(O)=CC=C1C(F)(F)C(F)(F)C1=CC=C(O)C=C1 YFWMKHJNNZCGHF-UHFFFAOYSA-N 0.000 description 3
- NUDSREQIJYWLRA-UHFFFAOYSA-N 4-[9-(4-hydroxy-3-methylphenyl)fluoren-9-yl]-2-methylphenol Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3C3=CC=CC=C32)C=2C=C(C)C(O)=CC=2)=C1 NUDSREQIJYWLRA-UHFFFAOYSA-N 0.000 description 3
- 125000004203 4-hydroxyphenyl group Chemical group [H]OC1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 229930185605 Bisphenol Natural products 0.000 description 3
- VOWWYDCFAISREI-UHFFFAOYSA-N Bisphenol AP Chemical compound C=1C=C(O)C=CC=1C(C=1C=CC(O)=CC=1)(C)C1=CC=CC=C1 VOWWYDCFAISREI-UHFFFAOYSA-N 0.000 description 3
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 150000001339 alkali metal compounds Chemical class 0.000 description 3
- 125000002877 alkyl aryl group Chemical group 0.000 description 3
- 125000005037 alkyl phenyl group Chemical group 0.000 description 3
- 125000003710 aryl alkyl group Chemical group 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 3
- 239000003456 ion exchange resin Substances 0.000 description 3
- 229920003303 ion-exchange polymer Polymers 0.000 description 3
- 238000004949 mass spectrometry Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229920001643 poly(ether ketone) Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000002940 repellent Effects 0.000 description 3
- 239000005871 repellent Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 2
- UYTIDFKSDPDIHS-UHFFFAOYSA-N 2-chloro-5-(4-chloro-3-sulfobenzoyl)benzenesulfonic acid Chemical compound C1=C(Cl)C(S(=O)(=O)O)=CC(C(=O)C=2C=C(C(Cl)=CC=2)S(O)(=O)=O)=C1 UYTIDFKSDPDIHS-UHFFFAOYSA-N 0.000 description 2
- MNCHHASTPCASCI-UHFFFAOYSA-N 2-cyclohexyl-4-[9-(5-cyclohexyl-4-hydroxy-2-methylphenyl)fluoren-9-yl]-5-methylphenol Chemical compound CC1=CC(O)=C(C2CCCCC2)C=C1C1(C2=CC=CC=C2C2=CC=CC=C21)C(C(=CC=1O)C)=CC=1C1CCCCC1 MNCHHASTPCASCI-UHFFFAOYSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- YCPULGHBTPQLRH-UHFFFAOYSA-N 3-aminopiperidine-2,6-dione;hydron;chloride Chemical compound Cl.NC1CCC(=O)NC1=O YCPULGHBTPQLRH-UHFFFAOYSA-N 0.000 description 2
- HDMSFHDIUUIJGB-UHFFFAOYSA-N 4-[(4-hydroxy-3-methylphenyl)-diphenylmethyl]-2-methylphenol Chemical compound C1=C(O)C(C)=CC(C(C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=C(C)C(O)=CC=2)=C1 HDMSFHDIUUIJGB-UHFFFAOYSA-N 0.000 description 2
- OVVCSFQRAXVPGT-UHFFFAOYSA-N 4-[1-(4-hydroxyphenyl)cyclopentyl]phenol Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCC1 OVVCSFQRAXVPGT-UHFFFAOYSA-N 0.000 description 2
- OZUKSFSYIRAISP-UHFFFAOYSA-N 4-[9-(4-hydroxy-2,5-dimethylphenyl)fluoren-9-yl]-2,5-dimethylphenol Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3C3=CC=CC=C32)C=2C(=CC(O)=C(C)C=2)C)=C1C OZUKSFSYIRAISP-UHFFFAOYSA-N 0.000 description 2
- SNPPMOSOWNHABX-UHFFFAOYSA-N 4-[9-(4-hydroxy-3,5-dimethylphenyl)fluoren-9-yl]-2,6-dimethylphenol Chemical compound CC1=C(O)C(C)=CC(C2(C3=CC=CC=C3C3=CC=CC=C32)C=2C=C(C)C(O)=C(C)C=2)=C1 SNPPMOSOWNHABX-UHFFFAOYSA-N 0.000 description 2
- 125000004800 4-bromophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Br 0.000 description 2
- 125000000242 4-chlorobenzoyl group Chemical group ClC1=CC=C(C(=O)*)C=C1 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
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- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000001269 time-of-flight mass spectrometry Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- FIQMHBFVRAXMOP-UHFFFAOYSA-N triphenylphosphane oxide Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)(=O)C1=CC=CC=C1 FIQMHBFVRAXMOP-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
Classifications
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
- Conductive Materials (AREA)
- Fuel Cell (AREA)
Abstract
本発明は、プロトン伝導性に優れ、かつ、燃料遮断性にも優れたイオン性基を有するポリマーおよびそれからなる高分子電解質材料を提供し、さらには、それらを用いた高分子電解質部品または膜電極複合体によって高出力で高エネルギー容量の高分子電解質型燃料電池を提供せんとするものである。
【解決手段】
本発明のイオン性基を有するポリマーは、下記数式(F1)で定義されるPが0.2〜0.995であることを特徴とするものである。
P=B/A ……(F1)
(式中、Aは該ポリマーの乾燥重量1gあたりが有するイオン性基の全数を表し、BはAのうち電子吸引性基を有する芳香族環に結合したイオン性基の数を表す。)
であり、また、本発明の高分子電解質材料、高分子電解質部品、膜電極複合体ならびに高分子電解質型燃料電池は、いずれもかかるイオン性基を有するポリマーを用いて構成されていることを特徴とするものである。
【選択図】 なし
Description
J. Polym. Sci., Part A, Polym. Chem. 31, 853-858 (1993) Macromol. Chem. Phys. 199, 1421-1426 (1998) 「ポリマー」(Polymer), 1987, vol. 28, 1009.
(式中、Aは該ポリマーの乾燥重量1gあたりが有するイオン性基の全数を表し、BはAのうち電子吸引性基を有する芳香族環に結合したイオン性基の数を表す。)
であり、また、本発明の高分子電解質材料、高分子電解質部品、膜電極複合体ならびに高分子電解質型燃料電池は、いずれもかかるイオン性基を有するポリマーを用いて構成されていることを特徴とするものである。
(式中、Aは該ポリマーの乾燥重量1gあたりが有するイオン性基の全数を表し、BはAのうち電子吸引性基を有する芳香族環に結合したイオン性基の数を表す。)
ここで本発明において、ポリマーの乾燥重量とは、本発明のポリマーを膜厚300μm以下の膜状、または粉末状(JIS試験用網ふるい(公称目開き250μm)を通過したもの)の形状において、20hPa以下の圧力で50℃、24時間以上乾燥させた状態での重量を意味する。
本発明の前記数式F1のPの制御は以下のようにして行う。
(式中、Ar1およびAr2は置換されていてもよい2価のアリーレン基、Wは電子吸引性の2価の基を表す。Ar1、Ar2および/またはWはそれぞれが2種類以上の基を表してもよい。)
Ar1およびAr2として好適な基は、合成の容易さ、高分子量ポリマーの得られやすさの点で、置換されていてもよいフェニレン基、ナフチレン基、アントラシレン基、ビフェニレン基であり、置換されていてもよいフェニレン基が特に好ましい。
一般式(I’)で表される基におけるTは、「電子吸引性基を有する芳香族環に結合したイオン性基」である。
(式中、Eは芳香族環を有する2価の基を表す。Yは酸素、硫黄またはセレンを表す。Eおよび/またはYはそれぞれが2種類以上の基を表してもよい。)
Eは芳香族環を有する2価の基を表し、Eは任意に置換基を有していても良い。 Yとしては、高分子量体ポリマーの合成の容易さから酸素および硫黄がより好ましく、溶媒に対する溶解性の点から酸素が特に好ましい。
一般式(III)中、R1として用いられる1価の有機基としては、アルキル基、アリール基、アルキルアリル基、シクロアルキル基、アリールアルキル基、ハロゲ化アルキル基、アルキルアリール基、ハロゲン化アリール基などを挙げることができる。イオン性基としてはスルホン酸基、硫酸基、スルホンイミド基、ホスホン酸基、リン酸基およびカルボン酸基などが挙げられる。
式(IV)中、R2、R3として用いられる1価の有機基としては、アルキル基、アリール基、アルキルアリル基、シクロアルキル基、アリールアルキル基、ハロゲン化アルキル基、アルキルアリール基、ハロゲン化アリール基などを挙げることができる。イオン性基としてはスルホン酸基、硫酸基、スルホンイミド基、ホスホン酸基、リン酸基およびカルボン酸基などが挙げられる。
ここで、Ar3〜Ar6の具体例としては、フェニル基、アルキルフェニル基、アリールフェニル基、ハロ置換フェニル基、ハロ置換アルキルフェニル基、ナフチル基、アルキルナフチル基、ハロ置換ナフチル基、アントラシル基などのアリール基、およびこれらに対応するアリーレン基などが挙げられる。溶媒に対する溶解性、高分子量ポリマー重合の容易さおよび入手の容易さからさらに好ましいAr3〜Ar6はフェニル基、アルキルフェニル基、アリールフェニル基、ナフチル基などのアリール基およびこれらに対応するアリーレン基である。
一般式(V−2)または一般式(V−3)中、R4〜R7として用いられる1価の有機基としては、アルキル基、アリール基、アルキルアリル基、シクロアルキル基、アリールアルキル基、ハロ置換アルキル基、アルキルアリール基、ハロ置換アリール基が挙げられる。イオン性基としてはスルホン酸基、硫酸基、スルホンイミド基等が挙げられる。
(式中、Eは芳香族環を有する2価の基で、前記一般式(III)、(IV)、(V)、(V−2)または(V−3)により表される。Ar1およびAr2は置換されていてもよい2価のアリーレン基、Wは電子吸引性の2価の基、Yは酸素、硫黄またはセレンを表す。E、Ar1、Ar2、Wおよび/またはYはそれぞれが2種類以上の基を表してもよい。)
一般式(VI)のEにおいて、一般式(V)、(V−2)および(V−3)のいずれかで表される基が含まれていることが、イオン性基を有するポリマーの燃料クロスオーバー低減効果の点から好ましく、その含有率としては、E全量に対し25〜100mol%が好ましく、より好ましくは40〜100mol%である。25mol%以上とすることにより、燃料クロスオーバー低減効果の実効を期待できる。
(式(C1)中、Gは、ハロゲンを表す。W、Ar1、Ar2は、それぞれ前述の基を表す。)
HO−E−OH (C2)
(式(C2)中、Eは前述の基を表す。)
前記一般式(C1)で表される芳香族活性ジハライド化合物中の2価の基Wは、電子吸引性の基であれば特に限定されるものでない。Wの具体例としては、−CO−、−(CF2)n−(nは1〜10の整数)、−C(CF3)2−、−SO2−、−SO−、−PO(R0)−(R0は任意の有機基)、−CO−A−CO−(Aは芳香環を含む任意の2価の基)、−SO2−B−SO2−(Bは芳香環を含む任意の2価の基)などが挙げられる。中でも、高分子量ポリマーの合成の容易さ、製膜性および入手の容易さの点から、−CO−、−SO2−、−PO(R0)−がさらに好ましく、製膜性および燃料遮断性の点から−CO−が特に好ましい。
オレン−9−イリデン)ビス[2−シクロヘキシルフェノール]、4,4'−(9H−フルオレン−9−イリデン)ビス[2−シクロヘキシル−5−メチルフェノール]、4,4'−(ジフェニルメチレン)ビス[2−メチルフェノール]、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール、4,4'−(9H−フルオレン−9−イリデン)ビス[2−フルオロフェノール]、2,2'−(9H−フルオレン−9−イリデン)ビス[4−フルオロフェノール]、4,4'−(9H−フルオレン−9−イリデン)ビス[2−フェニルフェノール]、2,2'−(9H−フルオレン−9−イリデン)ビス[4−フェニルフェノール]、4,4'−ジヒドロキシテトラフェニルメタンおよび2,2'−ジヒドロキシ−9,9’−スピロビフルオレン等が挙げられる。
[測定方法]
(1)スルホン酸基密度
精製、乾燥後のポリマーについて、元素分析により測定した。C、H、Nの分析は、全自動元素分析装置varioELで、また、Sの分析はフラスコ燃焼法・酢酸バリウム滴定、Pの分析についてはフラスコ燃焼法・リンバナドモリブデン酸比色法で実施した。それぞれのポリマーの組成比から単位グラムあたりのスルホン酸基密度(mmol/g)を算出した。
ポリマーの重量平均分子量をGPCにより測定した。紫外検出器と示差屈折計の一体型装置として東ソー製HLC−8022GPCを、またGPCカラムとして東ソー製TSK gel SuperHM−H(内径6.0mm、長さ15cm)2本を用い、N−メチル−2−ピロリドン溶媒(臭化リチウムを10mmol/L含有するN−メチル−2−ピロリドン溶媒にて、流量0.2mL/minで測定し、標準ポリスチレン換算により重量平均分子量を求めた。
接触式膜厚計にて測定した。
膜状の試料を25℃の純水に24時間浸漬した後、25℃、相対湿度50〜80%の雰囲気中に取り出し、できるだけ素早く定電位交流インピーダンス法でプロトン伝導度を測定した。
核磁気共鳴スペクトル法(溶媒:ジメチルスルホキシド−d6)により、電子吸引性基を有する芳香族環に結合したイオン性基の数と、それ以外のイオン性基の数の比を求め、その結果からPを算出した。
膜状の試料を25℃の純水に24時間浸漬した後、20℃において30重量%メタノール水溶液を用いて測定した。
膜電極複合体(MEA)をエレクトロケム社製セルにセットし、アノード側に30%メタノール水溶液、カソード側に空気を流してMEA評価を行った。評価はMEAに定電流を流し、その時の電圧を測定した。電流を順次増加させ電圧が10mV以下になるまで測定を行った。各測定点での電流と電圧の積が出力となるが、その最大値(MEAの単位面積あたり)を出力(mW/cm2)とした。
出力:最大出力密度(mW/cm2)
容積:燃料の容積(本実施例では10mLとして計算した。)
濃度:燃料のメタノール濃度(%)
MCO:MEAでのMCO(μmol・min−1・cm−2)
電流密度:最大出力密度が得られるときの電流密度(mA/cm2)
[合成例1]
(下記一般式(e1)で表わされるジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノンの合成)
下記一般式(e2)で表わされるイオン性基を有するポリマーを合成した。
(重合)
炭酸カリウム6.9g、2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7g、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0g、4,4'−ジフルオロベンゾフェノン4.4g、および上記合成例1で得たジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを用いて、N−メチルピロリドン(NMP)中、190℃で重合を行った。多量の水で再沈することで精製を行い、その後乾燥して上記式(e2)で示されるポリマーを得た。該ポリマーを粉砕器で微粉末化し、3N塩酸中で3日間以上撹拌してプロトン置換した後に、大過剰量の純水中で3日間以上撹拌して充分洗浄した。
(スルホン化)
室温、N2雰囲気下で、上記で得られた式(e2)で示されるポリマーの微粉末5gをクロロホルムに懸濁させた後、激しく撹拌しながらクロロスルホン酸8mLを加え、1分反応させた。白色沈殿を濾別し、再粉砕し、水で十分洗浄した後、乾燥し、目的のイオン性基を有するポリマーを得た。
(製膜)
該ポリマーを、飽和食塩水浸漬によりNa置換後、N,N−ジメチルアセトアミドを溶媒とする溶液とし、当該溶液をガラス基板上に流延塗布し、100℃にて4時間乾燥して溶媒を除去した。さらに、窒素ガス雰囲気下、200〜300℃まで1時間かけて昇温し、300℃で10分間加熱する条件で熱処理した後、放冷した。1N塩酸に3日間以上浸漬してプロトン置換した後に、大過剰量の純水に3日間以上浸漬して充分洗浄した。
炭素繊維クロス基材に20%ポリテトラフルオロエチレン(PTFE)懸濁液を用いて撥水処理を施し、焼成して電極基材を2枚作製した。
得られたMEAをエレクトロケム社製セルに挟みアノード側に30重量%メタノール水溶液、カソード側に空気を流して高分子電解質型燃料電池とした。
市販の“ナフィオン”117膜(デュポン社製(商品名))を用い、プロトン伝導度およびメタノール透過量を評価した。ナフィオン117膜は、100℃の5%過酸化水素水中にて30分、続いて100℃の5%希硫酸中にて30分浸漬した後、100℃の脱イオン水でよく洗浄した。
下記一般式(e3)で表わされるイオン性基を有するポリマーを合成した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえた以外は実施例1と同様にして、上記式(e3)で示されるポリマーを合成し、プロトン化後にスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
特開2002−226575号公報の実施例4記載の方法で、下記一般式(f1)のポリエーテルケトンのスルホン化物を合成した。
特表2002−524631号公報の例19および例24に記載の方法で、下記一般式(f2)のポリエーテルケトンのスルホン化物を合成した。
下記一般式(e4)で表わされるイオン性基を有するポリマーを合成した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを4,4'−(9H−フルオレン−9−イリデン)ビス(2−メチルフェノール)7.6gにかえた以外は実施例1と同様にして、上記式(e25)で示されるポリマーを合成し、プロトン化後にスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
プロトン伝導度は6.1S・cm−2であった。
下記一般式(e5)で表わされるイオン性基を有するポリマーを合成した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを7.4gにかえ、合成例1で得たジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを2.5gにかえた以外は実施例1の(重合)と同様にして、上記式(e5)で示されるポリマーを合成し、プロトン化した。次に、クロロスルホン酸8mLを14mLにかえ、反応時間を5分とした以外は実施例1の(スルホン化)およびそれ以降と同様にしてスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
下記一般式(e6)で表わされるイオン性基を有するポリマーを合成した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを6.1gにかえ、合成例1で得たジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを5.1gにかえた以外は実施例1の(重合)と同様にして、上記式(e5)で示されるポリマーを合成し、プロトン化した。次に、クロロスルホン酸8mLを14mLにかえた以外は実施例1の(スルホン化)およびそれ以降と同様にしてスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえた以外は実施例1の(重合)と同様にして、前記式(e3)で示されるポリマーを合成し、プロトン化した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえた以外は実施例1の(重合)と同様にして、前記式(e3)で示されるポリマーを合成し、プロトン化した。
下記一般式(e7)で表わされるイオン性基を有するポリマーを合成した。
すなわち、2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを下記一般式(e8)で表される化合物9.8gにかえ、ジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを下記一般式(e9)で表される化合物2.9gにかえた以外は実施例1の(重合)と同様にして、上記一般式(e7)で示されるポリマーを合成し、プロトン化した。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを14.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを前記一般式(e8)で表される化合物9.8gにかえ、ジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを前記一般式(e9)で表される化合物2.9gにかえた以外は実施例1の(重合)と同様にして、前記一般式(e7)で示されるポリマーを合成し、プロトン化した。
下記一般式(e10)で表わされるイオン性基を有するポリマーを合成した。
すなわち、2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを2,2−ビス(4−ヒドロキシフェニル)プロパン9.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを7.0gにかえ、合成例1で得たジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを3.4gにかえた以外は実施例1の(重合)と同様にして、上記一般式(e10)で示されるポリマーを合成し、プロトン化した。次に、クロロスルホン酸8mLを14mLにかえた以外は実施例1の(スルホン化)およびそれ以降と同様にしてスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
2,2−ビス(4−ヒドロキシフェニル)−1,1,1,3,3,3−ヘキサフルオロプロパン6.7gを使用せず、4,4'−(9H−フルオレン−9−イリデン)ビスフェノール7.0gを2,2−ビス(4−ヒドロキシフェニル)プロパン9.1gにかえ、4,4'−ジフルオロベンゾフェノン4.4gを7.0gにかえ、合成例1で得たジソジウム 3,3’−ジスルホネート−4,4’−ジフルオロベンゾフェノン8.4gを3.4gにかえた以外は実施例1の(重合)と同様にして、前記一般式(e10)で示されるポリマーを合成し、プロトン化した。
下記一般式(e11)で表わされるイオン性基を有するポリマーを合成した。
4,4'−(9H−フルオレン−9−イリデン)ビスフェノールを4,4'−ジヒドロキシテトラフェニルメタンにかえた以外は実施例1と同様にして式(e11)で示されるポリマーを合成し、ポリマーを合成し、プロトン化後にスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
下記一般式(e12)で表わされるイオン性基を有するポリマーを合成した。
4,4'−(9H−フルオレン−9−イリデン)ビスフェノールを4,4'−ジヒドロキシテトラフェニルメタンにかえた以外は実施例2と同様にして式(e12)で示されるポリマーを合成し、ポリマーを合成し、プロトン化後にスルホン化、製膜、膜電極複合体の作製、高分子電解質型燃料電池の作製までを行った。
Claims (11)
- 下記数式(F1)で定義されるPが0.2〜0.995であることを特徴とするイオン性基を有するポリマー。
P=B/A ……(F1)
(式中、Aは該ポリマーの乾燥重量1gあたりが有するイオン性基の全数を表し、BはAのうち電子吸引性基を有する芳香族環に結合したイオン性基の数を表す。) - 該Pが0.5〜0.99であることを特徴とする請求項1に記載のイオン性基を有するポリマー。
- 該イオン性基を有するポリマーが、下記一般式(I)で表される構造を含むことを特徴とする請求項1または2に記載のイオン性基を有するポリマー。
−Ar1−W−Ar2− (I)
(式中、Ar1およびAr2は置換されていてもよい2価のアリーレン基、Wは電子吸引性の2価の基を表す。Ar1、Ar2および/またはWはそれぞれが2種類以上の基を表してもよい。) - 該イオン性基を有するポリマーが、下記一般式(II)で表される構造を含むことを特徴とする請求項1〜3のいずれかに記載のイオン性基を有するポリマー。
−Y−E−Y− (II)
(式中、Eは芳香族環を有する2価の基を表す。Yは酸素、硫黄またはセレンを表す。Eおよび/またはYはそれぞれが2種類以上の基を表してもよい。) - 請求項1〜4のいずれかに記載のイオン性基を有するポリマーからなることを特徴とする高分子電解質材料。
- 請求項5に記載の高分子電解質材料を用いてなる高分子電解質部品。
- 請求項6に記載の高分子電解質部品を用いてなる膜電極複合体。
- 請求項7に記載の膜電極複合体を用いてなる高分子電解質型燃料電池。
- 該高分子電解質型燃料電池が、炭素数1〜6の有機化合物およびこれと水との混合物から選ばれた少なくとも1種を燃料として用いてなる直接型燃料電池である請求項8に記載の高分子電解質型燃料電池。
- 該燃料が、炭素数1〜6の有機化合物を20〜70重量%含有するものである請求項9に記載の高分子電解質型燃料電池。
- 該炭素数1〜6の有機化合物が、膜電極複合体に供給されるものである請求項10に記載の高分子電解質型燃料電池。
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