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Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

Author

Listed:
  • Dingwang Huang

    (South China Normal University)

  • Lintao Li

    (South China Normal University)

  • Kang Wang

    (South China Normal University)

  • Yan Li

    (South China Normal University)

  • Kuang Feng

    (South China Normal University)

  • Feng Jiang

    (South China Normal University
    SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd.
    South China Normal University)

Abstract

A highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

Suggested Citation

  • Dingwang Huang & Lintao Li & Kang Wang & Yan Li & Kuang Feng & Feng Jiang, 2021. "Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24060-5
    DOI: 10.1038/s41467-021-24060-5
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    Cited by:

    1. Xue Zhou & Baihe Fu & Linjuan Li & Zheng Tian & Xiankui Xu & Zihao Wu & Jing Yang & Zhonghai Zhang, 2022. "Hydrogen-substituted graphdiyne encapsulated cuprous oxide photocathode for efficient and stable photoelectrochemical water reduction," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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