An electrolyte membrane-electrode assembly comprises a polymer electrolyte membrane; a cathode catalyst layer and a cathode gas diffusion layer including a cathode micro porous layer and a cathode gas diffusion layer substrate, arranged in order on one sid...

A gas diffusion layer for a fuel cell includes a gas diffusion layer substrate and a microporous layer formed on the surface of the gas diffusion layer substrate. The microporous layer is formed into a sheet-like shape including a binder and a carbon mater...

An object of the present invention is to provide a gas diffusion layer having gas flow passages formed at its one main surface, which is capable of achieving a further improvement in power generation performance. The fuel cell-use gas diffusion layer (14A,...

In a fuel cell of the present invention, a gas diffusion layer (15A, 15C) provided on at least one surface side of a polymer electrolyte membrane (12) is structured with a conductive carbon sheet. Fluid flow passages (16A, 16C) are formed on the surface of...

A gas diffusion layer for fuel cell of the present invention is structured with a porous member mainly comprised of conductive particles such as acetylene black, graphite and a polymer resin such as PTFE. This makes it possible to achieve both an improveme...

A gas diffusion layer (10) for a fuel cell includes a conductive microparticle layer (2) and a base material layer (1). The conductive microparticle layer (2) is formed with first pores (3) of no less than 0.5µm and no more than 50µm and second pores (4)...

A fuel cell stack includes at least one electricity generating element that generates electrical energy through a reaction of fuel and oxygen, the electricity generating element including a membrane-electrode assembly, separators respectively positioned at...

A membrane electrode assembly (9) is formed by arranging a gas diffusion layer (3) for fuel made on the basis of electrically conductive fibers, a catalyst layer (5) for fuel, an electrolyte membrane (2), a catalyst layer (6) for oxidizing agent, and a gas...

Contamination of the ion-exchange membrane in an electrochemical fuel cell can significantly reduce the lifetime. One source of contamination is from sealant materials, particularly if the sealant is silicone and impregnated into the peripheral region of t...