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Enhancing long-term photostability of BiVO4 photoanodes for solar water splitting by tuning electrolyte composition

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  • Dong Ki Lee

    (University of Wisconsin-Madison)

  • Kyoung-Shin Choi

    (University of Wisconsin-Madison)

Abstract

As the performance of photoelectrodes used for solar water splitting continues to improve, enhancing the long-term stability of the photoelectrodes becomes an increasingly crucial issue. In this study, we report that tuning the composition of the electrolyte can be used as a strategy to suppress photocorrosion during solar water splitting. Anodic photocorrosion of BiVO4 photoanodes involves the loss of V5+ from the BiVO4 lattice by dissolution. We demonstrate that the use of a V5+-saturated electrolyte, which inhibits the photooxidation-coupled dissolution of BiVO4, can serve as a simple yet effective method to suppress anodic photocorrosion of BiVO4. The V5+ species in the solution can also incorporate into the FeOOH/NiOOH oxygen-evolution catalyst layer present on the BiVO4 surface during water oxidation, further enhancing water-oxidation kinetics. The effect of the V5+ species in the electrolyte on both the long-term photostability of BiVO4 and the performance of the FeOOH/NiOOH oxygen-evolution catalyst layer is systematically elucidated.

Suggested Citation

  • Dong Ki Lee & Kyoung-Shin Choi, 2018. "Enhancing long-term photostability of BiVO4 photoanodes for solar water splitting by tuning electrolyte composition," Nature Energy, Nature, vol. 3(1), pages 53-60, January.
    • Handle: RePEc:nat:natene:v:3:y:2018:i:1:d:10.1038_s41560-017-0057-0
    DOI: 10.1038/s41560-017-0057-0
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    Cited by:

    1. Yang Liu & Huishan Shang & Bing Zhang & Dongpeng Yan & Xu Xiang, 2024. "Surface fluorination of BiVO4 for the photoelectrochemical oxidation of glycerol to formic acid," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    2. Hamdani, I.R. & Bhaskarwar, A.N., 2021. "Recent progress in material selection and device designs for photoelectrochemical water-splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    3. Tayebi, Meysam & Lee, Byeong-Kyu, 2019. "Recent advances in BiVO4 semiconductor materials for hydrogen production using photoelectrochemical water splitting," Renewable and Sustainable Energy Reviews, Elsevier, vol. 111(C), pages 332-343.
    4. Chenyang Xu & Hongxin Wang & Hongying Guo & Ke Liang & Yuanming Zhang & Weicong Li & Junze Chen & Jae Sung Lee & Hemin Zhang, 2024. "Parallel multi-stacked photoanodes of Sb-doped p–n homojunction hematite with near-theoretical solar conversion efficiency," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    5. Beibei Zhang & Shiqiang Yu & Ying Dai & Xiaojuan Huang & Lingjun Chou & Gongxuan Lu & Guojun Dong & Yingpu Bi, 2021. "Nitrogen-incorporation activates NiFeOx catalysts for efficiently boosting oxygen evolution activity and stability of BiVO4 photoanodes," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    6. Changhao Liu & Ningsi Zhang & Yang Li & Rongli Fan & Wenjing Wang & Jianyong Feng & Chen Liu & Jiaou Wang & Weichang Hao & Zhaosheng Li & Zhigang Zou, 2023. "Long-term durability of metastable β-Fe2O3 photoanodes in highly corrosive seawater," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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