A CO-CATALYST PROTON EXCHANGE MEMBRANE FUEL CELL UTILIZING BOROHYDRIDE FUELS

WIPO Patent Application WO2003065490

A3

Two co-catalysts selected from the transitional metals can be employed in proton exchange membrane fuel cells (10) to catalyze a borohydride anolyte (20), such that diatomic hydrogen produced on the surface of a particle of a first catalyst (19) is diffused to an adjacent surface of a particle of a second catalyst (18). At the second catalyst (18) the diatomic hydrogen is catalyzed to produce hydrogen ions, which are employed as the mobile ion transported across the electrolyte concurrent with the generation of electrical current. The apparatus operates without the accumulation of hydrogen gas, except as adhered to the surface of the two catalysts.

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TSANG JOSEPH W
PRASAD RAVI

PCT/US2003/002440

November 25, 2004

January 28, 2003

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HEWLETT PACKARD CO (US)

H01M4/86; H01M4/90; H01M8/06; H01M4/92; H01M8/10; (IPC1-7): H01M8/10; H01M4/92; H01M8/06; H01M8/22

WO2001073880A1	2001-10-04
WO2001074710A1	2001-10-11
WO2002054506A2	2002-07-11
WO2003006366A1	2003-01-23

US5372617A

1994-12-13

AMENDOLA S C ET AL: "An ultrasafe hydrogen generator: aqueous, alkaline borohydride solutions and Ru catalyst", JOURNAL OF POWER SOURCES, ELSEVIER SEQUOIA S.A. LAUSANNE, CH, vol. 85, no. 2, February 2000 (2000-02-01), pages 186 - 189, XP004189211, ISSN: 0378-7753

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