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Promotion of Platinum‐Ruthenium Catalyst for Electrooxidation of Methanol by Crystalline Ruthenium Dioxide

Shengyang HuangDepartment of Chemistry, National Tsing Hua University, 30013 Taiwan, Republic of ChinaChia‐ming ChangDepartment of Chemistry, National Tsing Hua University, 30013 Taiwan, Republic of ChinaKuan‐Wen WangFuel Cell Center and Department of Chemical Engineering and Materials Science, Yuan Ze University, 32003 Taiwan, Republic of China,Chuin-Tih YehFuel Cell Center and Department of Chemical Engineering and Materials Science, Yuan Ze University, 32003 Taiwan, Republic of China, Fax: (+886) 3‐5711082

2007en

ABI

Annotatsiya

Reversible redox reactions: The ruthenium on Pt–Ru/C electrocatalysts shows a reversible transformation (see figure), between RuO2 and Ru, during repetitive reductions (by hydrogen at Tr=620 K) and oxidations (by air at To=520 K). Electroactivity significantly increases after the oxidation treatment due to the formation of closely contacted domains between c-RuO2 and Pt. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2267/2007/z700238_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

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DOI: 10.1002/cphc.200700238

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