Nissan Motor Company Limited

Toyo Tanso Co., Ltd.

Takehiko Okui

Hiroyuki Tanaka

Shinichi Miyazaki

Atsushi Ohma

Ryoichi Shimoi

Tetsuya Mashio

Kazuki Arihara

Takahiro Morishita

Yoshio Shodai

Satoshi Takaichi

Stacked bodies each formed by alternately stacking power generation cells and separators are fixed to an end plate, the separators each having a flow passage portion, a gas flow-in port, and a gas flow-out port. The end plate includes upper and lower end plates sandwiching the stacked bodies. The stacked bodies are arranged side by side and a first thermal deformation absorbing portion configured to absorb thermal deformation in a direction orthogonal to a stacking direction is formed between the stacked bodies. Fixing means for fixing the stacked bodies to the end plate fix at least outer peripheral portions of the stacked bodies arranged side by side to the end plate.

Stack structure of fuel cell and method of absorbing thermal deformation in fuel cell stack

A cathode electrode for a fuel cell, includes a conductive carrier having pores and a catalyst having a platinum alloy supported in the pores of the conductive carrier, wherein the catalyst has in a pore diameter range of 2 to 6 nm when diameters of the pores is plotted in relation with volumes of the pores a peak value of more than 1 cm/g and also a BET specific surface area of 1300 m/g.

Cathode electrode for fuel cell

Provided are a carbon powder which can provide a catalyst exhibiting high performance and a catalyst. A carbon powder for fuel cell comprising carbon as a main component, which has a ratio (B/A) of an area B of peak 1 to an area A of peak 0 of more than 0 and 0.15 or less, wherein the area A represents an area of peak 0 at a position of 2&#x3b8;=22.5&#xb0; to 25&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere, and the area B represents an area of peak 1 at a position of 2&#x3b8;=26&#xb0; as observed by XRD analysis when the carbon powder for fuel cell is subjected to heat treatment at 1800&#xb0; C. for 1 hour in an inert atmosphere.

Carbon powder for fuel cell and catalyst, electrode catalyst layer, membrane electrode assembly, and fuel cell using the carbon powder for fuel cell

The fuel cell single cell of the present invention includes: a fuel cell unit in which an anode electrode, an electrolyte layer and a cathode electrode are sequentially laminated; a separator; and a current collection assisting layer disposed between the cathode electrode of the fuel cell unit and the separator. The separator has protruded portions that are in contact with the current collection assisting layer to form gas channels between the separator and the current collection assisting layer. Further, at least a part of an end of the cathode electrode in a planar direction of the cathode electrode extends outward beyond an end of the current collection assisting layer in a planar direction of the current collection assisting layer.

Fuel cell single cell

A fuel cell system includes: an external load connected to a fuel cell; an electric power adjusting unit configured to adjust a generated electric power of the fuel cell in accordance with electric power consumption of the external load; a humidity control unit configured to control humidity of an electrolyte membrane in the fuel cell on the basis of the generated electric power of the fuel cell; an output voltage detecting unit configured to detect an output voltage of the fuel cell; and a cross leakage determining unit configured to cause the humidity control unit to increase the humidity of the electrolyte membrane when the fuel cell generates the electric power, the cross leakage determining unit being configured to determine whether a cross leakage amount increases or not on the basis of a change in the output voltage at that time.

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Kanagawa, Japan

Takehiko Okui