Role of Transition Metal in Fast Oxidation Reaction on the Pt3TM (111) (TM = Ni, Co) Surfaces

Authors

  • Yong Su Kim,

    1. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
    2. CFI-CES, IBS and Department of Physics & Astronomy, Seoul National University, Seoul 151-747 Korea
    Current affiliation:
    1. Y.S.K. and S.H.J. contributed equally to this work
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  • Sang Ho Jeon,

    1. Department of Materials Science & Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744 Korea
    Current affiliation:
    1. Y.S.K. and S.H.J. contributed equally to this work
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  • Aaron Bostwick,

    1. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
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  • Eli Rotenberg,

    1. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
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  • Philip N. Ross,

    1. Material & Molecular Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
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  • Vojislav R. Stamenkovic,

    1. Material Science Division, Argonne National Laboratory, Argonne, Illinois 60439 USA
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  • Nenad M. Markovic,

    1. Material Science Division, Argonne National Laboratory, Argonne, Illinois 60439 USA
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  • Tae Won Noh,

    1. CFI-CES, IBS and Department of Physics & Astronomy, Seoul National University, Seoul 151-747 Korea
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  • Seungwu Han,

    Corresponding author
    1. Department of Materials Science & Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744 Korea
    • Seungwu Han, Department of Materials Science & Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744 Korea

      Bongjin Simon Mun, Department of Physics & Photon Science, School of Physics & Chemistry, Ertl Center for Electrochemistry and Catalyst, Gwangju Institute of Science and Technology, Gwangju 500-712 Korea.

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  • Bongjin Simon Mun

    Corresponding author
    1. Department of Physics & Photon Science, School of Physics & Chemistry, Ertl Center for Electrochemistry and Catalyst, Gwangju Institute of Science and Technology, Gwangju 500-712 Korea
    • Seungwu Han, Department of Materials Science & Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744 Korea

      Bongjin Simon Mun, Department of Physics & Photon Science, School of Physics & Chemistry, Ertl Center for Electrochemistry and Catalyst, Gwangju Institute of Science and Technology, Gwangju 500-712 Korea.

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Abstract

original image

Revealing the electronic structures of Pt-alloys explains why the addition of transition metal to Pt speeds up the oxygen reduction reaction. It is found that transition metals in the subsurface induce charge polarization at the surface and suppresses the surface-states. The modified surface-states of Pt surface layer critically affects the chemical bonding between oxygen and Pt surfaces.

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