Sony Corporation

Sayaka Nanjo

Shuji Goto

Kazuaki Fukushima

Tetsuro Kusamoto

A fuel cell is provided that prevents destabilization of power generation due to heat generated in an electrochemical device portion. In a fuel cell having a membrane-electrode assembly which performs power generation by chemical reaction, a membrane-electrode assembly is disposed with a space from another membrane-electrode assembly or two membrane-electrode assemblies are provided adjacent to each other so that the pair is disposed with a space from another membrane-electrode assembly or another pair, and one of the main surfaces of a membrane-electrode assembly is in contact with outside air. Conductive plates are disposed in contact with the membrane-electrode assembly in order to exchange a current generated in the membrane-electrode assembly with the outside, and radiation fins are provided on the conductive plate on the main surface side in contact with outside air so that the conductive plate serves as a radiation member.

Fuel cell having enhanced heat dissipation

An electrochemical device capable of improving arrangement efficiency of bonded bodies and securing favorable sealing characteristics is provided. An electrolyte membranehas a reaction regionA sandwiched between a fuel electrodeand an oxygen electrodeand a peripheral regionB exposed from between the fuel electrodeand the oxygen electrode. A connection memberhas a bent sectionbetween two flat sectionsand. Since an adhesive layeris provided in the peripheral sectionB of the electrolyte membrane, and the bent sectionof the connection memberis bonded to the adhesive layer, arrangement efficiency of a bonded bodyis improved, and favorable sealing characteristics are secured. The adhesive layerhas a structure in which a first contact layer having high adhesion to the electrolyte membrane, a barrier layer, a strength retention layer, and a second contact layer having high adhesion to the connection memberare sequentially laminated. Since a connection-member-side adhesive layer is provided on the bent sectionof the connection member, adhesion strength can be further improved.

Growing community of inventors

Kanagawa, Japan

Sayaka Nanjo