Patent ID: 7153602
Filing Date: 2006-12-26
Classification: B82Y,H01M,Y02E

Abstract:
1. A fuel cell assembly including at least one cell comprising: an electrolyte layer; first and second gas diffusion electrode layers interposing the electrolyte layer between them; a first flow distribution plate placed on an outer side of the first gas diffusion electrode layer, the first flow distribution plate including a silicon substrate having a recess in a surface facing the first gas diffusion electrode layer and defining fuel gas passages for fuel gas that contacts the first gas diffusion electrode layer; and a second flow distribution plate placed on an outer side of the second gas diffusion electrode layer, the second flow distribution plate including a silicon substrate having a recess in a surface facing the second gas diffusion electrode and defining oxidizer passages for oxidizer gas that contacts the second gas diffusion electrode layer, wherein said recess of each of said first and second flow distribution plates is provided with a number of projections formed on a bottom of said recess, a first electrode terminal layer is formed on said projections of said first flow distribution plate for electrically connecting said first gas diffusion electrode layer to an external circuit, a second electrode terminal layer is formed on said projections of said second flow distribution plate for electrically connecting said second gas diffusion electrode layer to said external circuit, each of said first and second gas diffusion electrode layers comprises a porous layer covering said recess to define the passages for fuel and oxidizer gases, and said porous layer of each of said first and second gas diffusion electrode layers comprises a carbon nano-tube film, wherein said first and second electrode terminal layers each consist of gold.