An
electrode base material for
solid polymer fuel
cell that overcomes the problems of prior art and is most suitable for use in assembling of an inexpensive compact
cell stack; and a process for producing the
electrode base material. There is provided a
porous electrode base material of <= 150 mum thickness, comprising carbon staple fibers of 3 to 9 mum
diameter dispersed in random directions within a substantially two-dimensional plane, these carbon staple fibers bound to each other by an amorphous resin
carbide, further these carbon staple fibers crosslinked to each other by a filamentous resin
carbide. It is also intended to provide an
electrode base material for
solid polymer fuel
cell that overcomes the problems of prior art, realizing low cost, smooth supply and
discharge of gas and water for use in reaction and
exertion of cell performance. Thus, further, there is provided a
porous electrode base material, comprising carbon staple fibers of 3 to 9 mum
diameter dispersed in random directions within a substantially two-dimensional plane, these carbon staple fibers bound to each other by an amorphous resin
carbide, further these carbon staple fibers crosslinked to each other by a network resin carbide of <= 3 mum minimum
fiber diameter.