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    Solar-driven self-powered alkaline seawater electrolysis via multifunctional earth-abundant heterostructures

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    Type
    Article
    Authors
    Wu, Yuhan
    Tian, Zhengnan
    Yuan, Saifei
    Qi, Ziyuan
    Feng, Yiran
    Wang, Yifei
    Huang, Rong
    Zhao, Yinlan
    Sun, Jianhui
    Zhao, Wen
    Guo, Wenyue
    Feng, Jinglan
    Sun, Jingyu
    KAUST Department
    Physical Sciences and Engineering Division, Materials Science & Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
    Date
    2021-01-18
    Online Publication Date
    2021-01-18
    Print Publication Date
    2021-05
    Embargo End Date
    2023-01-22
    Submitted Date
    2020-11-16
    Permanent link to this record
    http://hdl.handle.net/10754/667107
    
    Metadata
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    Abstract
    Harnessing renewable solar resources to drive water electrolyzer to attain hydrogen fuel is of paramount significance to a sustainable energy future. Nevertheless, the intermittent and instable drawbacks of sunlight greatly limit their practical applications. In this sense, incorporating an energy storage module in between the photovoltaic and electrolytic cells separately is an effective solution to cushion this issue. Herein, we devise a solar-driven self-powered electrocatalytic water splitting system, which employs photovoltaic cell to drive micro zinc-ion battery array to offer a stable voltage for continuously powering the seawater electrolyzer. Our design of miniature energy storage devices not only harvests high energy output but also reduces the bulky connection degrees of thus-integrated system. More impressively, the electrodes based on earth-abundant materials showcase multifunctionality, which is reflected in the good electrochemical performance of zinc-ion battery device, the impressive electrocatalytic activity toward overall water splitting, as well as the robustness to resist the corrosion within alkaline seawater. Our hybrid system would open up agitated ideas for the continuous acquisition of hydrogen fuel with low energy consumption, reasonable cost aspect and high environmental sustainability.
    Citation
    Wu, Y., Tian, Z., Yuan, S., Qi, Z., Feng, Y., Wang, Y., … Sun, J. (2021). Solar-driven self-powered alkaline seawater electrolysis via multifunctional earth-abundant heterostructures. Chemical Engineering Journal, 411, 128538. doi:10.1016/j.cej.2021.128538
    Sponsors
    Y.H.W. and Z.N.T. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (51702225, 52000004) and the Natural Science Foundation of Jiangsu Province (BK20170336). The authors also acknowledge support from the Suzhou Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Suzhou, China.
    Publisher
    Elsevier BV
    Journal
    Chemical Engineering Journal
    DOI
    10.1016/j.cej.2021.128538
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S1385894721001376
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.cej.2021.128538
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