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Tailoring a local acid-like microenvironment for efficient neutral hydrogen evolution

Author

Listed:
  • Xiaozhong Zheng

    (Zhejiang University)

  • Xiaoyun Shi

    (Zhejiang University)

  • Honghui Ning

    (Zhejiang University)

  • Rui Yang

    (Zhejiang University)

  • Bing Lu

    (Zhejiang University)

  • Qian Luo

    (Zhejiang University)

  • Shanjun Mao

    (Zhejiang University)

  • Lingling Xi

    (Zhejiang University)

  • Yong Wang

    (Zhejiang University
    Zhengzhou University)

Abstract

Electrochemical hydrogen evolution reaction in neutral media is listed as the most difficult challenges of energy catalysis due to the sluggish kinetics. Herein, the Ir-HxWO3 catalyst is readily synthesized and exhibits enhanced performance for neutral hydrogen evolution reaction. HxWO3 support is functioned as proton sponge to create a local acid-like microenvironment around Ir metal sites by spontaneous injection of protons to WO3, as evidenced by spectroscopy and electrochemical analysis. Rationalize revitalized lattice-hydrogen species located in the interface are coupled with Had atoms on metallic Ir surfaces via thermodynamically favorable Volmer-Tafel steps, and thereby a fast kinetics. Elaborated Ir-HxWO3 demonstrates acid-like activity with a low overpotential of 20 mV at 10 mA cm−2 and low Tafel slope of 28 mV dec−1, which are even comparable to those in acidic environment. The concept exemplified in this work offer the possibilities for tailoring local reaction microenvironment to regulate catalytic activity and pathway.

Suggested Citation

  • Xiaozhong Zheng & Xiaoyun Shi & Honghui Ning & Rui Yang & Bing Lu & Qian Luo & Shanjun Mao & Lingling Xi & Yong Wang, 2023. "Tailoring a local acid-like microenvironment for efficient neutral hydrogen evolution," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39963-8
    DOI: 10.1038/s41467-023-39963-8
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    References listed on IDEAS

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    2. Xuesi Wang & Chaochen Xu & Mietek Jaroniec & Yao Zheng & Shi-Zhang Qiao, 2019. "Anomalous hydrogen evolution behavior in high-pH environment induced by locally generated hydronium ions," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    3. M. S. Dresselhaus & I. L. Thomas, 2001. "Alternative energy technologies," Nature, Nature, vol. 414(6861), pages 332-337, November.
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