Fuel cell anode based on a disordered catalytic material

Details Fuel cell anode based on a disordered catalytic material Fuel cell anode based on a disordered catalytic material

H - Electricity

01

M

319/15, 252/52.L

H01M 4/90 (2006.01) H01M 4/86 (2006.01)

Patent

CA 1197554

ABSTRACT An anode for hydrogen oxidation in a fuel cell is formed from a host matrix including at least one transition element which is structurally modified by the incorporation of at least one modifier element to improve its catalytic prop- erties. The catalytic body is based on a dis- ordered non-equilibrium material designed to have a high density of catalytically active sites, resistance to poisioning, and long operating life. Modifier elements, including Ti, Mo, Zr, Mg, V, Si or Al, structurally modify tile local chemical environment of a nickel or other transition ele- ment host matrix to form the catalytic materials of the anode. The improved low overvoltage cata- lytic materials of the anode of the present inven- tion increase the operating efficiencies of fuel cells employing such anodes. The catalytic mate- rials can be deposited as a layer on the surface of porous electrode substrates to form a gas dif- fusion anode or can be formed as a gas diffusion electrode.

431711

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