US 6,982,128 B2 | ||
Co-catalyst proton exchange membrane fuel cell utilizing borohydride fuels | ||
Joseph W Tsang, Corvallis, Oreg. (US); and Ravi Prasad, Corvallis, Oreg. (US) | ||
Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
Filed on Jan. 28, 2002, as Appl. No. 10/59,693. | ||
Prior Publication US 2003/0143443 A1, Jul. 31, 2003 | ||
Int. Cl. H01M 4/90 (2006.01); H01M 8/18 (2006.01) |
U.S. Cl. 429—19 | 30 Claims |
1. A proton exchange membrane fuel cell comprising:
a membrane electrode assembly comprising a proton permeable membrane bonded on one side to a porous anode and bonded on the
opposite side to a porous cathode;
a continuous supply of a borohydride anolyte and a means of flowing the anolyte over the anode of the cell;
a continuous supply of a catholyte and a means of flowing the catholyte over the cathode of the cell;
a first anode catalyst embedded in surface of the anode and catalyzing the anolyte to generate hydrogen;
a second anode catalyst separately embedded in surface of the anode and catalyzing hydrogen produced by the first anode catalyst
to generate hydrogen ions; and
a cathode catalyst embedded in surface of the cathode and catalyzing the catholyte.
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