Skip to Content
Find More Like This
Return to Search

Gradient isolator for flow field of fuel cell assembly

United States Patent

5,912,088
June 15, 1999
View the Complete Patent at the US Patent & Trademark Office
Isolator(s) include isolating material and optionally gasketing material strategically positioned within a fuel cell assembly. The isolating material is disposed between a solid electrolyte and a metal flow field plate. Reactant fluid carried by flow field plate channel(s) forms a generally transverse electrochemical gradient. The isolator(s) serve to isolate electrochemically a portion of the flow field plate, for example, transversely outward from the channel(s), from the electrochemical gradient. Further, the isolator(s) serve to protect a portion of the solid electrolyte from metallic ions.
Ernst; William D. (Troy, NY)
Plug Power, L.L.C. (Latham, NY)
08/ 958,163
October 28, 1997
STATEMENT OF GOVERNMENT RIGHTS The Government of the United States of America has rights in this invention pursuant to Contract No. DE-AC02-94CE50389 awarded by the U.S. Department of Energy.