Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Hiroaki Matsuoka

Kazuhito Hatoh

Toshihiro Matsumoto

Hiroki Kusakabe

Teruhisa Kanbara

Norihiko Kawabata

Yoshihiro Hori

Masato Hosaka

Takeshi Yonamine

Tomohiro Kijima

Junji Nikura

An MEA having an MEA body partC; a framemade of a plate-like thermoplastic resin; and gasketsformed on opposed surfaces of the frameso as to hold the framebetween. The gasketseach have an annular portionA that is annularly formed so as to extend along the inner periphery of the frameand elongated portionsBtoBthat extend from the annular portionA and come into contact with the side faces of an associated electrode layerC after passing over the inner periphery of the frameand a peripheral regionD of a polymer electrolyte membrane.

MEA, MEA manufacturing method, and polymer electrolyte fuel cell

In a polymer electrolyte fuel cell of the present invention, at least one of electrodes comprises conductive carbon carrying a platinum group metal catalyst, conductive carbon carrying no catalyst metal and a hydrogen ion-conductive polymer electrolyte. The preferable amount of the conductive carbon carrying no catalyst metal is equivalent to 5 to 50 wt % of the conductive carbon carrying the catalyst metal. Incorporation of the conductive carbon carrying no catalyst metal to the catalyst layer enables reduction in potential concentration on part of electron conduction channels in an electrode, whereby an electrode for a polymer electrolyte fuel cell having an excellent life characteristic can be provided.

Polymer electrolyte type fuel cell

Growing community of inventors

Kagawa, Japan

Hiroaki Matsuoka