The ordered and disordered nano-intermetallic AuCu/C catalysts for the oxygen reduction reaction: The differences of the electrochemical performance

Hengquan Chen, Masahiko Nishijima, Guangjin Wang, Samson Khene, Mingqiao Zhu, Xin Deng, Xingmin Zhang, Wen Wen, Yu Luo, Qinggang Hea

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    To figure out the different electrochemical performance of ordered and disordered nano-intermetallic catalysts and their mechanisms, we successfully synthesized AuCu/C electrocatalysts through a modified co-precipitation method and obtained their ordered and disordered structure at different temperatures. A systematic comparison between the ordered and disordered AuCu/C with the similar composition, particle size, valence state was conducted. The AuCu/C nanoparticles with better structure-ordering showed superior catalytic performance for the oxygen reduction reaction (ORR) than the disordered ones. It was also observed that the disordered AuCu/C tended to form a Cu-shell structure which was believed to be detrimental to ORR electrocatalysis.

    Original languageEnglish
    Pages (from-to)F1654-F1661
    JournalJournal of the Electrochemical Society
    Volume164
    Issue number14
    DOIs
    Publication statusPublished - 2017

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

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