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Data from Los Alamos National Laboratory Advance Knowledge in Chalcogens (Electrocatalysis of oxygen reduction with platinum supported on molybdenum...

July 29, 2014



Data from Los Alamos National Laboratory Advance Knowledge in Chalcogens (Electrocatalysis of oxygen reduction with platinum supported on molybdenum carbide-carbon composite)

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Chalcogens have been published. According to news reporting out of Los Alamos, New Mexico, by NewsRx editors, research stated, "Molybdenum carbide-carbon (MoC0.56-C) composite was synthesized using a polymer assisted deposition (PAD) technique, and studied as possible catalyst support. The electrocatalysis of oxygen reduction reaction (ORR) was studied with Pt deposited on the newly developed support."

Our news journalists obtained a quote from the research from Los Alamos National Laboratory, "The ORR activity of Pt/MoC0.56-C is far better than that of standard support, 140 A g(Pt)(-1) at 0.9 V vs. RHE compared to 68 with A g(Pt)(-1) with Pt/XC-72. This high activity with the potential of increased durability of MoC0.56-C composite material, when compared to commercial carbon supports, is a significant step in PEM cells technology. These results are complemented by theoretical calculations which show a favorable electronic interaction of the Pt and the composite material. The MoC0.56-C composite was obtained using a one-step PAD synthesis technique at 800 degrees C. From XRD analysis, this composite material contains 56.7% MoC0.56 with an average crystallite size of 1 nm and a balance of amorphous carbon. SEM-EDAX pictures revealed that the support is composed of two separated phases, the amorphous carbon and the molybdenum carbide."

According to the news editors, the research concluded: "Platinum nano-particles were deposited onto the support and served as catalyst for oxygen reduction for the evaluation of this composite material as a possible catalyst support in fuel cells and metal-air batteries."

For more information on this research see: Electrocatalysis of oxygen reduction with platinum supported on molybdenum carbide-carbon composite. Journal of Electroanalytical Chemistry, 2014;720():34-40. Journal of Electroanalytical Chemistry can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Chalcogens).

Our news journalists report that additional information may be obtained by contacting L. Elbaz, Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545, United States. Additional authors for this research include C.R. Kreller, N.J. Henson and E.L. Brosha.

Keywords for this news article include: Los Alamos, New Mexico, United States, North and Central America, Chalcogens, Heavy Metals, Molybdenum, Transition Elements

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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