Nitta Corporation

Yasushi Kobuchi

Ikuzo Usami

Toshiaki Kasazaki

Tomohiro Nishio

Moreover, as a case of not using the press work, in a separator of a polymer electrolyte fuel cell described in a Japanese Unexamined Patent Publication JP-A 2001-76748, a gas channel is formed by printing an electrically conductive material onto an electrically conductive base material. To be specific, as the electrically conductive base material is used a molded plate formed of carbon powder and a thermosetting resin as main components, and as the electrically conductive material is used carbon paste containing carbon powder as a main component.

Separator comprising a metal sheet and a resin

A separator that is excellent in workability and corrosion resistance, and allows a reduction in the number of constituent components of a fuel cell and the number of manufacturing process steps, and a manufacturing method therefore are provided. A separator includes a separating section for achieving separation between a hydrogen gas channel and an oxygen gas channel, and a sealing section disposed along an outer periphery of the separator, for preventing leakage of hydrogen and oxygen gases. The separating section and the sealing section are formed integrally with each other by means of plastic deformation processing, e.g., press working, of a metal thin sheet. A coating layer is formed n the metal thin sheet to coat the metal thin sheet's surface, and a DC power generated at an interface between a high polymer membrane and a catalytic electrode on contact of the coating layer with the catalytic electrode is taken out as a DC current and is collected at a power collector plate after passing through an interior of the separator. A high polymer elastic layer is provided at the part contacting the high polymer membrane of a sealing projection of the sealing section. The polymer elastic layer contacts the polymer film to seal.

Growing community of inventors

Yamatokooriyama, Japan

Yasushi Kobuchi