Metal working – Method of mechanical manufacture – Electrical device making
Patent
1993-12-10
1996-06-18
Skapars, Anthony
Metal working
Method of mechanical manufacture
Electrical device making
264293, 429 34, H01M 214
Patent
active
055273637
ABSTRACT:
An embossed fluid flow field plate for electrochemical cells comprises two sheets of compressible, electrically conductive material. Each sheet has two oppositely facing major surfaces. At least one of the major surfaces has an embossed surface which has a fluid inlet formed therein. The embossed surface has at least one open-faced channel embossed therein extending from the fluid inlet for conducting pressurized fluid introduced at the fluid inlet. A metal sheet is interposed between each of the compressible sheets. The compressible, electrically conductive sheet preferably comprises graphite foil. A method of fabricating an embossed separator plate for use in conjunction with an electrochemical fuel cell comprises (1) providing two sheets of compressible, electrically conductive sheet material, (2) interposing a metal sheet between each of the compressible sheets, and (3) embossing an open-faced channel in at least one of the surfaces of the sheets facing away from the metal sheet.
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Interim Report: "New Membrane-Catalyst For Solid Polymer Electrolyte Systems", P.O. N. 9-X53-D6272-1, Prepared for University of California, Los Alamos National Laboratory. General Electrical Company, 1984. Month not available.
Product Description: "GRAFOIL Flexible Graphite Quick Reference Grade Guide", UCAR Carbon Company, Inc., 1991. Month not available.
Lamont Gordon J.
Schwab Clemens
Voss Henry H.
Wilkinson David P.
Ballard Power Systems Inc.
Daimler-Benz AG
Skapars Anthony
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