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Fuel Cell Flow Field Design

United States Patent Application

20040265675
A1
View the Complete Application at the US Patent & Trademark Office
A fuel cell comprising a stack of two or more flow field plates with flow field paths on one or both surfaces of each flow field plate may have a plurality of flow field paths of substantially different length and geometry on each surface. Despite these differences, the electric current density may be substantially uniform among all portions of the fuel cell by providing each flow field path a cross-sectional area determined in proportion to the flow length and geometry of that flow field path.
Woodcock, Gordon R. (Santa Cruz, CA), Issacci, Farrokh (Playa Del Rey, CA), Rehg, Timothy J. (Rancho Palos Verdes, CA)
GENERAL ELECTRIC COMPANY (1 River Road Schenectady NY)
10/ 604,044
June 24, 2003
[0001] The invention described herein was made in the performance of work under United States Department of Energy Contract No. DE-FC02-97EE50470. The United States Government may have certain rights to this invention.