Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Hikaru Murakami

Kazuhito Hatoh

Hideo Ohara

Masaaki Miyoshi

Susumu Kobayashi

Takeshi Tomizawa

Masato Hosaka

Mikio Takezawa

Takayuki Onishi

Separator for fuel cell

A mold for a use of making a fuel cell separator comprises: a first flow path forming portion to form a cooling medium flowing path, or to form an oxidizing gas flowing path, or to form a fuel gas flowing path; and an injection gate to shoot out a forming material settled on the first flow path, and/or disposed at near place with the first flow path.

Fuel cell separator

An electrolyte membrane-gasket assembly for a fuel cell, including a polymer electrolyte membrane and a gasket, made of a seal material, covering the peripheral portion of the electrolyte membrane, in which the electrolyte membrane has a sequence of a plurality of through-holes in the peripheral portion, and a portion of the gasket covering one surface of the electrolyte membrane and a portion covering the other surface are connected to each other through the through-holes of the electrolyte membrane. This assembly provides a polymer electrolyte fuel cell free from gas cross leakage caused by a detachment of the gasket from the polymer electrolyte membrane. It is preferable to further include catalyst layers carried on both surfaces of the polymer electrolyte membrane, respectively, and protective films covering, respectively, sections spanning from the peripheral portion of each of the catalyst layers to the peripheral portion of the polymer electrolyte membrane.

High polymer electrolyte fuel cell and electrolyte film-gasket assembly for the fuel cell

A polymer electrolyte fuel cell in which neither cross leakage nor outward leakage occurs with the application of low clamping pressures. The polymer electrolyte fuel cell a membrane electrode assembly (MEA) including a polymer electrolyte membrane, a gasket covering the periphery of the electrolyte membrane, and an anode and cathode attached to the electrolyte membrane; and conductive separator plates sandwiching the MEA therebetween. The gasket has seal ribs surrounding each of the manifold apertures, the anode and the cathode, as well as seal ribs formed on both sides of each of gas passages connecting the fuel gas manifold apertures with the anode and gas passages connecting the oxidant gas manifold apertures with the cathode. These seal ribs, except for in the gas passages, are pressed against the separator plates by clamping pressure of the cell stack to form gas sealing sections.

Polymer electrolyte fuel cell

Growing community of inventors

Saijo, Japan

Hikaru Murakami