| US 7,452,624 B2 | ||
| Polymer electrolyte type fuel cell | ||
| Kazuhito Hatoh, Osaka (Japan); Junji Niikura, Hirakata (Japan); Teruhisa Kanbara, Toyonaka (Japan); Hideo Ohara, Katano (Japan); Hiroki Kusakabe, Sakai (Japan); Nobuhiro Hase, Mino (Japan); Shinsuke Takeguchi, Kadoma (Japan); Susumu Kobayashi, Ikoma (Japan); and Tatsuto Yamazaki, deceased, late of Moriguchi (Japan), by Masayo Sugou, legal representative, | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 10/312,812 PCT Filed Feb. 14, 2002, PCT No. PCT/JP02/01275 § 371(c)(1), (2), (4) Date Oct. 01, 2003, PCT Pub. No. WO02/065567, PCT Pub. Date Aug. 22, 2002. |
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| Claims priority of application No. 2001-039246 (JP), filed on Feb. 15, 2002. | ||
| Prior Publication US 2004/0214066 A1, Oct. 28, 2004 | ||
| Int. Cl. H01M 8/00 (2006.01); H01M 8/10 (2006.01); H01M 2/14 (2006.01) | ||
| U.S. Cl. 429—38 [429/12; 429/30] | 10 Claims |
| 1. A polymer electrolyte fuel cell comprising:
a hydrogen ion conductive polymer electrolyte membrane;
a pair of electrodes sandwiching said hydrogen ion conductive polymer electrolyte membrane therebetween; and
a pair of conductive separator plates including means for supplying and discharging a fuel gas to and from one of said electrodes
and supplying and discharging an oxidant gas to and from the other electrode,
wherein said conductive separator plates comprise molded plates of a composition comprising a binder, conductive carbon particles
whose average particle diameter is not less than 50 μm and not more than ⅓ of a thickness of a thinnest portion of said conductive
separator plate, and carbon nanotubes;
wherein said carbon nanotubes have a diameter of 10 to 30 nm and a length of 1 to 10 μm; and
wherein said binder is an acid-resisting resin.
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