Portion conductive electrolyte, method of preparing the...

Details Portion conductive electrolyte, method of preparing the... Portion conductive electrolyte, method of preparing the...

2006-05-26

2010-10-19

Yuan, Dah-Wei D. (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Fuel cell with solid electrolyte

C429S491000, C528S488000

Reexamination Certificate

active

07816052

ABSTRACT:
A proton conductive electrolyte including a polymerized polyurethane, polyethylene(metha)acrylic acid (PEAA), and a cross-linking agent mixture; a method of preparing the same; an electrode including a support and a catalyst layer, the catalyst layer including a supported catalyst and a polymerized mixture of a polyurethane based compound and a polyethylene(metha)acrylic acid; a method of preparing the electrode; and a fuel cell including the proton conductive electrolyte and/or the electrode. The proton conductive electrolyte can be prepared at lower costs than conventionally used polybenzimidazole and NAFION and can be easily formed into a membrane with a controlled thickness by casting. The polymer electrolyte membrane has high mechanical strength, flexibility, and excellent ionic conductivity. The electrode remains stable under high temperature operation, a strong binding force is maintained between the support and the catalyst layer, and the electrode has excellent ionic conductivity. The fuel cell produced using the proton conductive electrolyte and/or the electrode can operate at 100° C. or higher under non-humidified conditions and exhibits an improved performance.

REFERENCES:
patent: 3412054 (1968-11-01), Milligan et al.
patent: 5912093 (1999-06-01), Wen et al.
patent: 2004/0131934 (2004-07-01), Sugnaux et al.
patent: 2004/0241541 (2004-12-01), Watanabe et al.
patent: 2004-281223 (2004-10-01), None
patent: 2004281223 (2004-10-01), None
patent: 2004533702 (2004-11-01), None
Japanese Office Action issued Jan. 5, 2010, in corresponding Japanese Patent Application No. 2006-148827.

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