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Stabilization of ultrathin (hydroxy)oxide films on transition metal substrates for electrochemical energy conversion

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  • Zhenhua Zeng

    (Davidson School of Chemical Engineering, Purdue University)

  • Kee-Chul Chang

    (Argonne National Laboratory)

  • Joseph Kubal

    (Davidson School of Chemical Engineering, Purdue University)

  • Nenad M. Markovic

    (Argonne National Laboratory)

  • Jeffrey Greeley

    (Davidson School of Chemical Engineering, Purdue University)

Abstract

Design of cost-effective electrocatalysts with enhanced stability and activity is of paramount importance for the next generation of energy conversion systems, including fuel cells and electrolysers. However, electrocatalytic materials generally improve one of these properties at the expense of the other. Here, using density functional theory calculations and electrochemical surface science measurements, we explore atomic-level features of ultrathin (hydroxy)oxide films on transition metal substrates and demonstrate that these films exhibit both excellent stability and activity for electrocatalytic applications. The films adopt structures with stabilities that significantly exceed bulk Pourbaix limits, including stoichiometries not found in bulk and properties that are tunable by controlling voltage, film composition, and substrate identity. Using nickel (hydroxy)oxide/Pt(111) as an example, we further show how the films enhance activity for hydrogen evolution through a bifunctional effect. The results suggest design principles for this class of electrocatalysts with simultaneously enhanced stability and activity for energy conversion.

Suggested Citation

  • Zhenhua Zeng & Kee-Chul Chang & Joseph Kubal & Nenad M. Markovic & Jeffrey Greeley, 2017. "Stabilization of ultrathin (hydroxy)oxide films on transition metal substrates for electrochemical energy conversion," Nature Energy, Nature, vol. 2(6), pages 1-9, June.
    • Handle: RePEc:nat:natene:v:2:y:2017:i:6:d:10.1038_nenergy.2017.70
    DOI: 10.1038/nenergy.2017.70
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    Cited by:

    1. Jiayi Chen & Mohammed Aliasgar & Fernando Buendia Zamudio & Tianyu Zhang & Yilin Zhao & Xu Lian & Lan Wen & Haozhou Yang & Wenping Sun & Sergey M. Kozlov & Wei Chen & Lei Wang, 2023. "Diversity of platinum-sites at platinum/fullerene interface accelerates alkaline hydrogen evolution," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Xu, Fei & Yu, Chen & Qian, Guangfu & Luo, Lin & Hasan, Syed Waqar & Yin, Shibin & Tsiakaras, Panagiotis, 2020. "Electrocatalytic production of hydrogen over highly efficient ultrathin carbon encapsulated S, P co-existence copper nanorods composite," Renewable Energy, Elsevier, vol. 151(C), pages 1278-1285.

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