Process Accumulated 8% Efficient Cu2ZnSnS4-BiVO4 Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion

Hongwei Cai; Weidong Zhao; Guohong Xiao; Yucheng Hu; Xiaomin Wu; Huanyang Ni; Shigeru Ikeda; Yunhau Ng; Jiahua Tao; Lingzhi Zhao; Feng Jiang

doi:10.1002/advs.202205726

Process Accumulated 8% Efficient Cu₂ZnSnS₄-BiVO₄ Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion

Hongwei Cai, Weidong Zhao, Guohong Xiao, Yucheng Hu, Xiaomin Wu, Huanyang Ni, Shigeru Ikeda, Yunhau Ng, Jiahua Tao^*, Lingzhi Zhao^*, Feng Jiang^*

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

22 Citations (Scopus)

46 Downloads (CityUHK Scholars)

Abstract

A process accumulated record solar to hydrogen (STH) conversion efficiency of 8% is achieved on the Cu₂ZnSnS₄-BiVO₄ tandem cell by the synergistic coupling effect of solar thermal and photoelectrochemical (PEC) water splitting with the dynamic balance of solar energy storage and conversion of the greenhouse system. This is the first report of a Cu₂ZnSnS₄-BiVO₄ tandem cell with a high unbiased STH efficiency of over 8% for solar water splitting due to the greenhouse device system. The greenhouse acts as a solar thermal energy storage cell, which absorbs infrared solar light and storage as thermal energy with the solar light illumination time, while thermoelectric device (TD) converts thermal energy into electric power, electric power is also recycled and added onto Cu₂ZnSnS₄-BiVO₄ tandem cell for enhanced overall water splitting. Finally, the solar water splitting properties of the TD-Cu₂ZnSnS₄-BiVO₄ integrated tandem cell in pure natural seawater are demonstrated, and a champion STH efficiency of 2.46% is presented, while a large area (25 cm²) TD-Cu₂ZnSnS₄-BiVO₄ integrated tandem device with superior long-term stability is investigated for 1 week, which provides new insight into photoelectrochemical solar water splitting devices. © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH

Original language	English
Article number	2205726
Journal	Advanced Science
Volume	10
Issue number	5
Online published	20 Dec 2022
DOIs	https://doi.org/10.1002/advs.202205726
Publication status	Published - 14 Feb 2023

Research Keywords

greenhouse
light soaking effect
process accumulated
record solar to hydrogen efficiency
solar thermal energy storage and conversion
TD-CZTS-BiVO4 tandem cells

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@article{0ffc534f7bcd489da0a8a84247102a1d,

title = "Process Accumulated 8% Efficient Cu2ZnSnS4-BiVO4 Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion",

abstract = "A process accumulated record solar to hydrogen (STH) conversion efficiency of 8% is achieved on the Cu2ZnSnS4-BiVO4 tandem cell by the synergistic coupling effect of solar thermal and photoelectrochemical (PEC) water splitting with the dynamic balance of solar energy storage and conversion of the greenhouse system. This is the first report of a Cu2ZnSnS4-BiVO4 tandem cell with a high unbiased STH efficiency of over 8% for solar water splitting due to the greenhouse device system. The greenhouse acts as a solar thermal energy storage cell, which absorbs infrared solar light and storage as thermal energy with the solar light illumination time, while thermoelectric device (TD) converts thermal energy into electric power, electric power is also recycled and added onto Cu2ZnSnS4-BiVO4 tandem cell for enhanced overall water splitting. Finally, the solar water splitting properties of the TD-Cu2ZnSnS4-BiVO4 integrated tandem cell in pure natural seawater are demonstrated, and a champion STH efficiency of 2.46% is presented, while a large area (25 cm2) TD-Cu2ZnSnS4-BiVO4 integrated tandem device with superior long-term stability is investigated for 1 week, which provides new insight into photoelectrochemical solar water splitting devices. {\textcopyright} 2022 The Authors. Advanced Science published by Wiley-VCH GmbH",

keywords = "greenhouse, light soaking effect, process accumulated, record solar to hydrogen efficiency, solar thermal energy storage and conversion, TD-CZTS-BiVO4 tandem cells",

author = "Hongwei Cai and Weidong Zhao and Guohong Xiao and Yucheng Hu and Xiaomin Wu and Huanyang Ni and Shigeru Ikeda and Yunhau Ng and Jiahua Tao and Lingzhi Zhao and Feng Jiang",

year = "2023",

month = feb,

day = "14",

doi = "10.1002/advs.202205726",

language = "English",

volume = "10",

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issn = "2198-3844",

publisher = "Wiley-VCH Verlag GmbH",

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Process Accumulated 8% Efficient Cu₂ZnSnS₄-BiVO₄ Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion. / Cai, Hongwei; Zhao, Weidong; Xiao, Guohong et al.
In: Advanced Science, Vol. 10, No. 5, 2205726, 14.02.2023.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Process Accumulated 8% Efficient Cu2ZnSnS4-BiVO4 Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion

AU - Cai, Hongwei

AU - Zhao, Weidong

AU - Xiao, Guohong

AU - Hu, Yucheng

AU - Wu, Xiaomin

AU - Ni, Huanyang

AU - Ikeda, Shigeru

AU - Ng, Yunhau

AU - Tao, Jiahua

AU - Zhao, Lingzhi

AU - Jiang, Feng

PY - 2023/2/14

Y1 - 2023/2/14

N2 - A process accumulated record solar to hydrogen (STH) conversion efficiency of 8% is achieved on the Cu2ZnSnS4-BiVO4 tandem cell by the synergistic coupling effect of solar thermal and photoelectrochemical (PEC) water splitting with the dynamic balance of solar energy storage and conversion of the greenhouse system. This is the first report of a Cu2ZnSnS4-BiVO4 tandem cell with a high unbiased STH efficiency of over 8% for solar water splitting due to the greenhouse device system. The greenhouse acts as a solar thermal energy storage cell, which absorbs infrared solar light and storage as thermal energy with the solar light illumination time, while thermoelectric device (TD) converts thermal energy into electric power, electric power is also recycled and added onto Cu2ZnSnS4-BiVO4 tandem cell for enhanced overall water splitting. Finally, the solar water splitting properties of the TD-Cu2ZnSnS4-BiVO4 integrated tandem cell in pure natural seawater are demonstrated, and a champion STH efficiency of 2.46% is presented, while a large area (25 cm2) TD-Cu2ZnSnS4-BiVO4 integrated tandem device with superior long-term stability is investigated for 1 week, which provides new insight into photoelectrochemical solar water splitting devices. © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH

AB - A process accumulated record solar to hydrogen (STH) conversion efficiency of 8% is achieved on the Cu2ZnSnS4-BiVO4 tandem cell by the synergistic coupling effect of solar thermal and photoelectrochemical (PEC) water splitting with the dynamic balance of solar energy storage and conversion of the greenhouse system. This is the first report of a Cu2ZnSnS4-BiVO4 tandem cell with a high unbiased STH efficiency of over 8% for solar water splitting due to the greenhouse device system. The greenhouse acts as a solar thermal energy storage cell, which absorbs infrared solar light and storage as thermal energy with the solar light illumination time, while thermoelectric device (TD) converts thermal energy into electric power, electric power is also recycled and added onto Cu2ZnSnS4-BiVO4 tandem cell for enhanced overall water splitting. Finally, the solar water splitting properties of the TD-Cu2ZnSnS4-BiVO4 integrated tandem cell in pure natural seawater are demonstrated, and a champion STH efficiency of 2.46% is presented, while a large area (25 cm2) TD-Cu2ZnSnS4-BiVO4 integrated tandem device with superior long-term stability is investigated for 1 week, which provides new insight into photoelectrochemical solar water splitting devices. © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH

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