GAS FLOW PASSAGE CONSTITUTIVE MATERIAL, AND FUEL CELL PROVIDED WITH GAS FLOW PASSAGE CONSTITUTIVE MATERIAL

摘要

PPROBLEM TO BE SOLVED: To restrain a membrane-electrode assembly side 3, in particular, a diffusion layer 2b from being damaged caused by a gas flow passage constitutive material 20A, in a fuel cell 30 constituted to sandwich the membrane-electrode assembly side 3 by separators 28 comprising two members of the gas flow passage constitutive material 20A and a planar separator body 27. PSOLUTION: The gas flow passage constitutive material 20A is expanded metal formed of a metal thin plate S, and an area 50 development-worked face-directionally to widen a contact area contacting with the membrane-electrode assembly side 3 is formed in a portion where the expanded metal contacts with the membrane-electrode assembly side 3. PCOPYRIGHT: (C)2010,JPO&INPIT