Electrochemical Design of Mesoporous Pt–Ru Alloy Films with Various Compositions toward Superior Electrocatalytic Performance

Authors

  • Hongjing Wang,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
    2. Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan)
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  • Dr. Masataka Imura,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • Dr. Yoshihiro Nemoto,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • Dr. Liang Wang,

    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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  • Dr. Hu Young Jeong,

    1. UNIST Central Research Facilities, School of Mechanical & Advanced Materials Engineering, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon-ri, Eonyang-eup, Ulju-gun, Ulsan 689-798 (Korea)
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  • Dr. Tokihiko Yokoshima,

    1. Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan)
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  • Prof. Osamu Terasaki,

    1. Graduate School of EEWS (WCU), KAIST, Daejeon 305-701 (Korea)
    2. Department of Materials & Environmental Chemistry and Bezelii Center EXSELENT on Porous Materials, Stockholm University, Stockholm 10691 (Sweden)
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  • Prof. Yusuke Yamauchi

    Corresponding author
    1. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
    2. Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555 (Japan)
    3. Precursory Research for Embryonic Science and Technology (PRESTO), Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan)
    • World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1–1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
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Abstract

Mesoporous Pt–Ru alloy films with various compositions were synthesized by electrochemical plating in an aqueous surfactant solution. After the removal of surfactants, continuous mesoporous Pt–Ru alloy films possessing uniform mesopores with diameter about 7 nm were obtained. The Ru content in the films could be controlled from 0 to 13 at % by changing the precursor compositions. For all the films, the mesostructural periodicities and the mesopore sizes in the films were not changed. Due to the mesoporous structure and the doped Ru content, our mesoporous Pt–Ru films showed superior electrocatalytic activity for methanol oxidation reaction in comparison with the commercially available Pt catalyst.

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