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Gold-supported cerium-doped NiOx catalysts for water oxidation

Author

Listed:
  • Jia Wei Desmond Ng

    (Stanford University)

  • Max García-Melchor

    (SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory)

  • Michal Bajdich

    (SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory)

  • Pongkarn Chakthranont

    (Stanford University)

  • Charlotte Kirk

    (Stanford University)

  • Aleksandra Vojvodic

    (SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory)

  • Thomas F. Jaramillo

    (Stanford University
    SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory)

Abstract

The development of high-performance catalysts for the oxygen-evolution reaction (OER) is paramount for cost-effective conversion of renewable electricity to fuels and chemicals. Here we report the significant enhancement of the OER activity of electrodeposited NiOx films resulting from the combined effects of using cerium as a dopant and gold as a metal support. This NiCeOx–Au catalyst delivers high OER activity in alkaline media, and is among the most active OER electrocatalysts yet reported. On the basis of experimental observations and theoretical modelling, we ascribe the activity to a combination of electronic, geometric and support effects, where highly active under-coordinated sites at the oxide support interface are modified by the local chemical binding environment and by doping the host Ni oxide with Ce. The NiCeOx–Au catalyst is further demonstrated in a device context by pairing it with a nickel–molybdenum hydrogen evolution catalyst in a water electrolyser, which delivers 50 mA consistently at 1.5 V over 24 h of continuous operation.

Suggested Citation

  • Jia Wei Desmond Ng & Max García-Melchor & Michal Bajdich & Pongkarn Chakthranont & Charlotte Kirk & Aleksandra Vojvodic & Thomas F. Jaramillo, 2016. "Gold-supported cerium-doped NiOx catalysts for water oxidation," Nature Energy, Nature, vol. 1(5), pages 1-8, May.
    • Handle: RePEc:nat:natene:v:1:y:2016:i:5:d:10.1038_nenergy.2016.53
    DOI: 10.1038/nenergy.2016.53
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    Cited by:

    1. Shu-Pei Zeng & Hang Shi & Tian-Yi Dai & Yang Liu & Zi Wen & Gao-Feng Han & Tong-Hui Wang & Wei Zhang & Xing-You Lang & Wei-Tao Zheng & Qing Jiang, 2023. "Lamella-heterostructured nanoporous bimetallic iron-cobalt alloy/oxyhydroxide and cerium oxynitride electrodes as stable catalysts for oxygen evolution," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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