Degussa Aktiengesellschaft

Degussa - Huls Ag

Gerhard Heinz

Thomas Lehmann

Robert Schwarz

Karl-Anton Starz

Andreas Freund

Thomas Tacke

Reinhold Brand

Emmanuel Auer

Johannes Ohmer

Jutta Lang

A platinum alloy catalyst on an electrically conductive carbon support which contains an alloy of 40 to 60 atom-% of platinum, 10 to 20 atom-% of rhodium and 20 to 50 atom-% of iron in the form of finely divided alloy particles. The catalyst is characterised in that the average particle size of the alloy particles is less than 10 nm.

Pt/Rh/Fe alloy catalyst for fuel cells and a process for producing the

A catalyst for use in a fuel cell containing a platinum-aluminum alloy on a conductive carbon carrier, wherein the atomic ratio of platinum to aluminum is from 80:20 to 60:40 and the alloy is present on the carbon carrier in carbidized form with the structure of platinum-aluminum carbide Pt.sub.3 AlC.sub.0.5. Also disclosed are multimetallic alloy catalysts for use as electrode catalysts in fuel cells. Catalysts with high activity and stability are obtained on the basis of carbidized platinum-aluminum alloy catalysts by adding alloying elements of the groups VIB, VIIB, VIII and IB of the Periodic Table of Elements.

Platinum-aluminum alloy catalyst for fuel cells and method of its

A ternary platinum alloy catalyst on a conductive carbon carrier for use in fuel cells is disclosed. For the production of the catalyst, nitrate salts are used as precursors of the alloy components and all alloy components are deposited concurrently on the carbon carrier. This method of procedure yields ageing-stable catalysts with high oxygen mass activity.

Platinum alloy catalyst for fuel cells and method of its production

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Hasselroth, Germany

Gerhard Heinz