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Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis

Author

Listed:
  • Lingzheng Bu

    (College of Chemistry, Chemical Engineering and Materials Science, Soochow University)

  • Shaojun Guo

    (College of Engineering, Peking University
    College of Engineering, Peking University)

  • Xu Zhang

    (California State University)

  • Xuan Shen

    (Center for Functional Nanomaterials, Brookhaven National Laboratory)

  • Dong Su

    (Center for Functional Nanomaterials, Brookhaven National Laboratory)

  • Gang Lu

    (California State University)

  • Xing Zhu

    (Testing and Analysis Center, Soochow University)

  • Jianlin Yao

    (College of Chemistry, Chemical Engineering and Materials Science, Soochow University)

  • Jun Guo

    (Testing and Analysis Center, Soochow University)

  • Xiaoqing Huang

    (College of Chemistry, Chemical Engineering and Materials Science, Soochow University)

Abstract

Despite intense research in past decades, the lack of high-performance catalysts for fuel cell reactions remains a challenge in realizing fuel cell technologies for transportation applications. Here we report a facile strategy for synthesizing hierarchical platinum-cobalt nanowires with high-index, platinum-rich facets and ordered intermetallic structure. These structural features enable unprecedented performance for the oxygen reduction and alcohol oxidation reactions. The specific/mass activities of the platinum-cobalt nanowires for oxygen reduction reaction are 39.6/33.7 times higher than commercial Pt/C catalyst, respectively. Density functional theory simulations reveal that the active threefold hollow sites on the platinum-rich high-index facets provide an additional factor in enhancing oxygen reduction reaction activities. The nanowires are stable in the electrochemical conditions and also thermally stable. This work may represent a key step towards scalable production of high-performance platinum-based nanowires for applications in catalysis and energy conversion.

Suggested Citation

  • Lingzheng Bu & Shaojun Guo & Xu Zhang & Xuan Shen & Dong Su & Gang Lu & Xing Zhu & Jianlin Yao & Jun Guo & Xiaoqing Huang, 2016. "Surface engineering of hierarchical platinum-cobalt nanowires for efficient electrocatalysis," Nature Communications, Nature, vol. 7(1), pages 1-10, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11850
    DOI: 10.1038/ncomms11850
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    Cited by:

    1. Hui Jin & Zhewei Xu & Zhi-Yi Hu & Zhiwen Yin & Zhao Wang & Zhao Deng & Ping Wei & Shihao Feng & Shunhong Dong & Jinfeng Liu & Sicheng Luo & Zhaodong Qiu & Liang Zhou & Liqiang Mai & Bao-Lian Su & Dong, 2023. "Mesoporous Pt@Pt-skin Pt3Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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