Toyota Jidosha Kabushiki Kaisha

Kohsei Yoshida

Masaaki Matsusue

Yasushi Araki

Kazunori Shibata

Hiromi Tanaka

Takashi Kajiwara

Atsushi Ida

Naohiro Hoshikawa

Joji Tomiyasu

Koji Fukunaga

A fuel cell stack includes a plurality of single cells stacked and a manifold. The plurality of single cells each include a first separator including a seal portion surrounding the manifold and including a hollow protrusion and a fluid passage portion allowing the fluid to flow between the manifold and a space on the opposite side of the seal portion from the manifold via the hollow of the seal portion, a second separator disposed on the side opposite to the side on which the seal portion projects, of the first separator, and an electric insulating frame disposed on the opposite side of the second separator from the first separator. The second separator includes a flat-and-bulge portion in a surface facing the seal portion, along an abutment region of the seal portion and the electric insulating frame.

Fuel cell stack

A fuel cell includes: a membrane electrode assembly; cathode and anode-side water-repellent layers; a cathode-side separator that includes a cathode gas passage and an air exhaust manifold communicated to the cathode gas passage. The cathode gas passage includes a water exhaust inhibiting portion and a water storage portion. The water exhaust inhibiting portion is provided on a lowermost passage positioned on a lowermost side in a gravity direction. The water storage portion is provided upstream of the water exhaust inhibiting portion such that liquid water is stored in the water storage portion by the water exhaust inhibiting portion. A liquid water connection portion is provided in the water-repellent layer so as to pass through the water-repellent layer such that liquid water flows between the catalyst layer and the water storage portion.

Fuel cell and fuel cell system

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Gotemba, Japan

Kohsei Yoshida