Highly active PtRuFe/C catalyst for methanol electro-oxidation |
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| Institution: | 1. Korea Atomic Energy Research Institute, 111, Daedeok-Daero 989 Beon-Gil, Yuseong-Gu, Daejeon 305-353, Republic of Korea;2. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA;1. Collaborative Innovation Center of Sustainable Energy Materials, Guangxi Key Laboratory of Electrochemical Energy Materials, State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi University, Nanning, 530004, PR China;2. Laboratory of Materials and Devices for Electrochemical Power Industry, Ural Federal University, 19 Mira Str., Yekaterinburg, 620002, Russia;3. Laboratory of Electrochemical Devices based on Solid Oxide Proton Electrolytes, Institute of High Temperature Electrochemistry (RAS), Yekaterinburg, 620990, Russia;4. Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos, 38834, Greece;1. Department for Nanostructured Materials, Jožef Stefan Institute, Ljubljana, Slovenia;2. Department for Materials and Metallurgy, Faculty of Natural Science and Engineering, University of Ljubljana, Slovenia |
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| Abstract: | High methanol electro-oxidation activity was obtained on novel PtRuFe/C (2:1:1 at.%) catalyst. Mass and specific activities were 5.67 A g−1 catal. and 177 mA m−2 for the PtRuFe/C catalyst while those of the commercial PtRu/C catalyst were 2.28 A g−1 catal. and 87.7 mA m−2, respectively. CO stripping results showed that on-set voltage for CO electro-oxidation was lowered by incorporation of Fe. XRD and XPS results revealed that Fe2O3 was formed instead of Fe(0), which resulted in large electron deficiency in Pt and easy CO electro-oxidation. The electron deficiency of Pt was proved by XPS results of Pt4f peaks, which moved to higher binding energies in PtRuFe/C than PtRu/C. |
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