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Hetero-type dual photoanodes for unbiased solar water splitting with extended light harvesting

Author

Listed:
  • Jin Hyun Kim

    (School of Environmental Science & Engineering, Pohang University of Science and Technology (POSTECH))

  • Ji-Wook Jang

    (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels
    School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST))

  • Yim Hyun Jo

    (Advanced Center for Energy, Korea Institute of Energy Research (KIER))

  • Fatwa F. Abdi

    (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels)

  • Young Hye Lee

    (School of Environmental Science & Engineering, Pohang University of Science and Technology (POSTECH))

  • Roel van de Krol

    (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute for Solar Fuels)

  • Jae Sung Lee

    (School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST))

Abstract

Metal oxide semiconductors are promising photoelectrode materials for solar water splitting due to their robustness in aqueous solutions and low cost. Yet, their solar-to-hydrogen conversion efficiencies are still not high enough for practical applications. Here we present a strategy to enhance the efficiency of metal oxides, hetero-type dual photoelectrodes, in which two photoanodes of different bandgaps are connected in parallel for extended light harvesting. Thus, a photoelectrochemical device made of modified BiVO4 and α-Fe2O3 as dual photoanodes utilizes visible light up to 610 nm for water splitting, and shows stable photocurrents of 7.0±0.2 mA cm−2 at 1.23 VRHE under 1 sun irradiation. A tandem cell composed with the dual photoanodes–silicon solar cell demonstrates unbiased water splitting efficiency of 7.7%. These results and concept represent a significant step forward en route to the goal of >10% efficiency required for practical solar hydrogen production.

Suggested Citation

  • Jin Hyun Kim & Ji-Wook Jang & Yim Hyun Jo & Fatwa F. Abdi & Young Hye Lee & Roel van de Krol & Jae Sung Lee, 2016. "Hetero-type dual photoanodes for unbiased solar water splitting with extended light harvesting," Nature Communications, Nature, vol. 7(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13380
    DOI: 10.1038/ncomms13380
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    Cited by:

    1. 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).
    2. 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.
    3. Yuri Choi & Rashmi Mehrotra & Sang-Hak Lee & Trang Vu Thien Nguyen & Inhui Lee & Jiyeong Kim & Hwa-Young Yang & Hyeonmyeong Oh & Hyunwoo Kim & Jae-Won Lee & Yong Hwan Kim & Sung-Yeon Jang & Ji-Wook Ja, 2022. "Bias-free solar hydrogen production at 19.8 mA cm−2 using perovskite photocathode and lignocellulosic biomass," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    4. Saraswat, Sushil Kumar & Rodene, Dylan D. & Gupta, Ram B., 2018. "Recent advancements in semiconductor materials for photoelectrochemical water splitting for hydrogen production using visible light," Renewable and Sustainable Energy Reviews, Elsevier, vol. 89(C), pages 228-248.
    5. Liang, Mengjun & Karthick, Ramalingam & Wei, Qiang & Dai, Jinhong & Jiang, Zhuosheng & Chen, Xuncai & Oo, Than Zaw & Aung, Su Htike & Chen, Fuming, 2022. "The progress and prospect of the solar-driven photoelectrochemical desalination," Renewable and Sustainable Energy Reviews, Elsevier, vol. 155(C).
    6. Lee, Jin Uk & Kim, Jeong Hun & Kang, Kyungwoong & Shin, Yun Seop & Kim, Jin Young & Kim, Jin Hyun & Lee, Jae Sung, 2023. "Bulk and surface modified polycrystalline CuWO4 films for photoelectrochemical water oxidation," Renewable Energy, Elsevier, vol. 203(C), pages 779-787.

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