Facile Synthesis of Porous PtM (M=Cu, Ni) Nanowires and Their Application as Efficient Electrocatalysts for Methanol Electrooxidation

Authors

  • Jianping Lai,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Dr. Ling Zhang,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Wenjing Qi,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Jianming Zhao,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Min Xu,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Wenyue Gao,

    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    2. University of the Chinese Academy of Sciences, Chinese Academy of Sciences, No. 19 A Yuquanlu, Beijing 100049 (P.R. China)
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  • Prof. Guobao Xu

    Corresponding author
    1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747
    • State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022 (P.R.China), Fax: (+86) 431-85262747

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Abstract

Porous Pt75Cu25 and Pt73Ni27 nanowires were successfully synthesized by a one-step wet chemical solution method without the use of any template for the first time. The combination of porous and one-dimensional features and the addition of a second cheap metal offer high catalyst utilization, excellent catalytic activity, and better durability for the methanol oxidation reaction. Porous Pt75Cu25 and Pt73Ni27 nanowires showed mass current densities of 390 (at 0.69) and 503 mA mg−1 (at 0.70 V), respectively. These mass current densities are much higher than that of Pt nanowires (356 mA mg−1 at 0.73 V) and commercial Pt black (195 mA mg−1 at 0.73 V). During the entire 2000 s current–time test, the porous Pt75Cu25 and Pt73Ni27 nanowires also exhibited higher stability for the methanol oxidation reaction than Pt nanowires and commercial Pt black.

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