Electrode catalyst for H 2 S fuel cells

Details Electrode catalyst for H 2 S fuel cells Electrode catalyst for H 2 S fuel cells

2006-03-21

2006-03-21

Weiner, Laura (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Having earth feature

C429S047000, C429S010000, C429S006000, C502S100000, C502S101000, C204S280000

Reexamination Certificate

active

07014941

ABSTRACT:
The present invention relates to an anode catalyst for use in the electrochemical oxidation of H2S to elemental sulfur and water, specifically in a fuel cell having an ion-conducting membrane. The catalyst comprises a material prepared from two or more metal sulfides of the formula MSx, wherein M is selected from the group consisting of Co, Ni, Fe, Mo, Cu, Cr, W and Mn, and x is between about 1.0 and about 2.5; a conductive material suitable for fuel cell operation; and a porous material. The invention further provides methods of preparing the catalyst, fuel cells comprising the catalyst and methods of electrochemically oxidizing H2S using the catalyst.

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