| US 7,595,121 B2 | ||
| Proton conductive polymer, catalyst composite, electrolyte membrane for fuel cell and fuel cell | ||
| Yoshihiko Nakano, Kanagawa-ken (Japan); and Hideo Oota, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Aug. 25, 2004, as Appl. No. 10/924,868. | ||
| Claims priority of application No. 2003-304017 (JP), filed on Aug. 28, 2003. | ||
| Prior Publication US 2005/0089741 A1, Apr. 28, 2005 | ||
| Int. Cl. H01M 8/00 (2006.01); H01M 4/00 (2006.01); H01M 8/10 (2006.01); H01M 8/08 (2006.01) | ||
| U.S. Cl. 429—12 [429/46; 429/33; 429/29] | 19 Claims |
1. An electrolyte membrane for a fuel cell comprising a laminated structure of a proton conductive polymer and a perfluorocarbonsulfonic
acid containing polymer membrane, wherein the proton conductive polymer comprises a polymer including at least one repeating
unit selected from the following chemical formulas 1-5:
 A is a valence or a bivalent organic group,
R is a hydrogen atom,
R1 is at least one selected from the group consisting of hydrogen atom, halogen atom, substituted or unsubstituted amino group,
substituted or unsubstituted alkoxy group, and substituted or unsubstituted hydrocarbon group, and
R2 is at least one selected from the group consisting of hydrogen atom, halogen atom, substituted or unsubstituted amino group,
substituted or unsubstituted alkoxy group, and substituted or unsubstituted hydrocarbon group,
and wherein the proton conductive polymer film is different from the perfluorocarbonsulfonic acid containing polymer membrane.
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