In a polymer electrolyte fuel cell wherein a plurality of unit cells are arranged in a flat manner oriented in the same direction, and the prescribed adjacent unit cells are electrically connected in series so as to connect the plurality of unit cells in series, a flat-type polymer electrolyte fuel cell is made possible by providing at least one of a through hole connecting portion, a filled via connecting portion and a bump connecting portion in an insulating portion located between the prescribed adjacent unit cells, electrically insulated from the unit cells and having a thickness approximately equal to that of the unit cell, for establishing electrical connection between the prescribed adjacent unit cells.


< Acrylic pressure-sensitive adhesives with aziridine crosslinking agents

< 2-ethyl-4,6-dimethyl-phenyl-substituted spirocyclic tetramic acid derivatives

> Non-aqueous dispersions of naphthol as pigments

> Toner, developer including the toner, and image forming method, image forming apparatus and process cartridge using the toner

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