Chemistry: electrical current producing apparatus – product – and – Fuel cell – subcombination thereof – or method of making or... – Electrode structure or composition
Reexamination Certificate
2005-07-14
2010-12-28
Yuan, Dah-Wei D (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Fuel cell, subcombination thereof, or method of making or...
Electrode structure or composition
C429S523000, C429S525000, C429S526000
Reexamination Certificate
active
07858263
ABSTRACT:
A solid polymer electrolyte fuel cell comprises: a plurality of electrode structures comprising an anode and a cathode, and polymer electrolyte membrane held between the anode and the cathode, and a plurality of separators for holding the respective electrode structures, with a fuel gas passage for supplying and discharging fuel gas containing hydrogen on a surface opposing the anode; and an oxidant gas passage for supplying and discharging oxidant gas on a surface opposing the cathode. The catalyst layer of the anode comprises a mixture of an ion conductive material, a platinum powder and/or platinum alloy powder and a carbon, the platinum powder and/or platinum alloy powder and carbon substantially exist independently from each other, and the catalyst layer of the cathode comprises a metal support mixture in which the ion conductive material and the electro-conductive material having the supported catalyst material are mixed.
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Japanese Office Action dated May 18, 2010 (in Japanese).
Fukuda Kaoru
Inoue Masahiko
Matsuo Junji
Matsutani Koichi
Tada Tomoyuki
Honda Motor Co. Ltd.
Kratz Quintos & Hanson, LLP
Scully Steven
Tanaka Kikinzoku Kogyo K.K.
Yuan Dah-Wei D
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