Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Fuel cell with solid electrolyte
Reexamination Certificate
2011-02-08
2011-02-08
Yuan, Dah-Wei (Department: 1727)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Fuel cell with solid electrolyte
C029S623100, C429S535000, C502S101000, C502S172000
Reexamination Certificate
active
07883817
ABSTRACT:
The present invention provides a gas diffusion electrode capable of sufficiently preventing not only degradation of MEA during storage but also degradation of initial characteristics and durability during the time period from production to initial use, and a polymer electrolyte fuel cell including the gas diffusion electrode. The gas diffusion electrode includes a catalyst layer in which A1representing a total mass of organic substance comprising alcohol, a partial oxide of the alcohol, a product of intramolecular dehydrogenation reaction of the alcohol, a product of intermolecular condensation reaction of the alcohol, a product of intermolecular condensation reaction between the alcohol and the partial oxide and a product of intermolecular condensation reaction of the partial oxide, E1representing a total mass of carbon powder and G1representing a total mass of cation exchange resin are controlled to satisfy {100×A1/(E1+G1)}≦0.05.
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Chinese Office Action with English Translation issued in Chinese Patent Application No. CN 200580019372.8 dated on Mar. 14, 2008.
Hori Yoshihiro
Tsuji Yoichiro
Yamauchi Masaki
Yonamine Takeshi
Yoshimura Mikiko
Asahi Glass Co. Ltd.
Martin Angela J.
McDermott Will & Emery LLP
Panasonic Corporation
Yuan Dah-Wei
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