Low-Temperature Synthesis of a PtRu/Nb0.1Ti0.9O2 Electrocatalyst for Methanol Oxidation
نویسندگان
چکیده
Niobium was doped into anatase TiO2 support at 10 mol % Nb0.1Ti0.9O2 using sol-gel chemistry. A PtRu/Nb0.1Ti0.9O2 catalyst was synthesized by LiBH4 reduction in tetrahydrofuran. The methanol electro-oxidation activity of the catalyst shows that this oxide support was electrically conductive. The current A/gPt was 6% higher on the PtRu/Nb0.1Ti0.9O2 catalyst compared to a commercial PtRu/C catalyst at 25°C. The electrochemically active surface area of the PtRu/C was 94% higher than PtRu/Nb0.1Ti0.9O2, thus the current per active site was 100% higher on PtRu/Nb0.1Ti0.9O2. A membrane electrode assembly with PtRu/Nb0.1Ti0.9O2 had 46% higher current A/gPt than an equivalent E-TEK membrane electrode assembly at 70°C. © 2007 The Electrochemical Society. DOI: 10.1149/1.2732074 All rights reserved.
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