Honda Motor Co., Ltd.

Jsr Corporation

Fusao Nakagawa

Nagayuki Kanaoka

Masahiro Mohri

Hiromichi Yoshida

Takaki Nakagawa

Yoshitaka Yamakawa

Toshiaki Kadota

Ryugo Suzuki

Takeshi Matsubara

Takao Fukumizu

A fuel cell system includes a fuel cell stack, an oxygen-containing gas supply apparatus, a fuel gas supply apparatus, a pressure reduction apparatus, and a dilution apparatus. The oxygen-containing gas supply apparatus supplies an oxygen-containing gas to the fuel cell stack. The oxygen-containing gas supply apparatus is capable of supplying the air to the fuel gas flow field at the time of stopping operation of the fuel cell system. The fuel gas supply apparatus supplies a fuel gas to the fuel cell stack. The pressure reduction apparatus suctions gases in the oxygen-containing gas flow field and the fuel gas flow field. The dilution apparatus dilutes the fuel gas suctioned by the pressure reduction apparatus using the air.

Fuel cell system, method of stopping operation of the fuel cell system, and method of starting operation of the fuel cell system

Disclosed is an electrode electrolyte for solid polymer fuel cells, which uses a polymer electrolyte containing a polyarylene copolymer containing a nitrogen-containing aromatic ring having a substituent represented by &#x2014;SOH, &#x2014;(O(CH)SOH or &#x2014;O(CF)SOH (wherein h represents an integer of 1-12). By having such a constitution, the electrode electrolyte for solid polymer fuel cells can be produced at a low cost, while being excellent in proton conductivity, dimensional stability, hydrothermal resistance and mechanical strength. In addition, this electrode electrolyte for solid polymer fuel cells enables to recover a catalyst metal.

Electrode electrolyte for polymer-type fuel cell, and use thereof

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Wako, Japan

Fusao Nakagawa