Patent ID: 6689439
Filing Date: 2004-02-10
Classification: H01M,Y02E,Y10T

Abstract:
A diffusion substrate suitable for use within a fuel cell, comprising:a base for conducting electrical charge and porous so that at least one fuel cell reaction constituent is capable of moving between a first side of said base and a second side of said base that is separated from said first side of said base; and a bed that is attached to said first side of said base and comprised of a plurality of micro-stud elements that each have a first end and a second end, said plurality of micro-stud elements extending between a first surface and a second surface which is substantially parallel to said first surface, said first surface defined by a plurality of said first ends of said micro-stud elements, said second surface defined by a plurality of said second ends of said micro-stud elements, said micro-stud elements for conducting electrical charge between said first and second surfaces, said bed further comprised of channels that extend between said first and second surfaces and are for transporting at least one fuel cell reaction constituent.