Platinum-Coated Copper Nanowires with High Activity for Hydrogen Oxidation Reaction in Base

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Abstract

Platinum (Pt)-coated copper (Cu) nanowires (Pt/CuNWs) are synthesized by the partial galvanic displacement of CuNWs and have a 100 nm diameter and are 25-40 μm length. Pt/CuNWs are studied as a hydrogen oxidation reaction (HOR) catalyst in base along with Cu templated Pt nanotubes (PtNT (Cu)), a 5% Cu monolayer on a bulk polycrystalline Pt electrode (5% ML Cu/BPPt), BPPt, and carbon supported Pt (Pt/C). Comparison of these catalysts demonstrates that the inclusion of Cu benefited the HOR activity of Pt/CuNWs likely by providing compressive strain on Pt; surface Cu further aids in hydroxyl adsorption, thereby improving the HOR activity of Pt/CuNWs. Pt/CuNWs exceed the area and mass exchange current densities of carbon supported Pt by 3.5 times and 1.9 times.

Original languageAmerican English
Pages (from-to)13473-13478
Number of pages6
JournalJournal of the American Chemical Society
Volume135
Issue number36
DOIs
StatePublished - 11 Sep 2013

NREL Publication Number

  • NREL/JA-5900-60791

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