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Study of Alternative Oxygen Reduction Electrocatalyst for Pt Based on Transition Metal Chalcogenides
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 14, 2008 by SAE International in United States
Citation: Ueno, Y., Iisaka, H., and Dohmae, K., "Study of Alternative Oxygen Reduction Electrocatalyst for Pt Based on Transition Metal Chalcogenides," SAE Int. J. Mater. Manf. 1(1):648-652, 2009, https://doi.org/10.4271/2008-01-1265.
The development of an alternative oxygen reduction electrocatalyst to platinum based electrocatalysts is critical for practical use of the polymer electrolyte membrane fuel cell (PEMFC). Transition metal sulfide chalcogenides have recently been reported as a possible candidate for Pt replacement. Our work focused on chalcogenides composed of ruthenium, molybdenum, and sulfur (RuMoS). We elucidate the factors affecting electrocatalytic activity of carbon supported RuXMoY SZ catalyst. This was demonstrated through a correlation of oxygen reduction reaction (ORR) activity of the catalysts with structural changes resulting from designed changes in sulfur composition in the catalysts.