Patent ID: 6218035
Filing Date: 2001-04-17
Classification: H01M,Y02E

Abstract:
A membrane electrode diffusion assembly comprising:an electrolyte membrane having opposing first and second surfaces;a catalytic anode having opposing first and second surfaces, and wherein the first surface of said catalytic anode is placed in ionic contact with said first surface of said electrolyte membrane;a catalytic cathode having opposing first and second surfaces, and wherein the first surface of said catalytic cathode is placed in ionic contact with said second surface of said electrolyte membrane;a first electrically conductive diffusion layer having first and second surfaces, and wherein the first surface of said diffusion layer is placed in ohmic electrical contact with the second surface of said catalytic anode;a second electrically conductive diffusion layer having first and second surfaces, and wherein the first surface of said second diffusion laver is placed in ohmic electrical contact with the second surface of said catalytic cathode;a third electrically conductive diffusion layer having first and second surfaces, and wherein the first surface of said third diffusion layer is placed in ohmic electrical contact with said second surface of said first diffusion layer;a fourth electrically conductive diffusion layer having first and second surfaces, and wherein the first surface of said fourth diffusion layer is placed in ohmic electrical contact with said second surface of said second diffusion layer; and wherein additional diffusion layers are placed in ohmic electrical contact on the second surface of the third and fourth diffusion layers.