News Column

Studies from Oak Ridge National Laboratory Yield New Data on Chalcogens (Platinum-Coated Nickel Nanowires as Oxygen-Reducing Electrocatalysts)

August 12, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Chalcogens have been published. According to news reporting from Oak Ridge, Tennessee, by NewsRx journalists, research stated, "Platinum (Pt)-coated nickel (Ni) nanowires (PtNiNWs) are synthesized by the partial spontaneous galvanic displacement of NiNWs, with a diameter of 150-250 nm and a length of 100-200 mu m. PtNiNWs are electrochemically characterized for oxygen reduction (ORR) in rotating disk electrode half-cells with an acidic electrolyte and compared to carbon-supported Pt (Pt/HSC) and a polycrystalline Pt electrode. Like other extended surface catalysts, the nanowire morphology yields significant gains in ORR specific activity compared to Pt/HSC."

The news correspondents obtained a quote from the research from Oak Ridge National Laboratory, "Unlike other extended surface approaches, the resultant materials have yielded exceptionally high surface areas, greater than 90 m(2) g(Pt)(-1). These studies have found that reducing the level of Pt displacement increases Pt surface area and ORR mass activity. PtNiNWs produce a peak mass activity of 917 mA mg(Pt)(-1), 3.0 times greater than Pt/HSC and 2.1 times greater than the U.S."

According to the news reporters, the research concluded: "Department of Energy target for proton-exchange membrane fuel cell activity."

For more information on this research see: Platinum-Coated Nickel Nanowires as Oxygen-Reducing Electrocatalysts. ACS Catalysis, 2014;4(4):1114-1119. ACS Catalysis can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; ACS Catalysis -

Our news journalists report that additional information may be obtained by contacting S.M. Alia, Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831, United States. Additional authors for this research include B.A. Larsen, S. Pylypenko, D.A. Cullen, D.R. Diercks, K.C. Neyerlin, S.S. Kocha and B.S. Pivovar (see also Chalcogens).

Keywords for this news article include: Nickel, Nanowire, Oak Ridge, Tennessee, Chalcogens, United States, Nanotechnology, Transition Elements, Emerging Technologies, North and Central America

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Source: Life Science Weekly

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