Synergetic Effects of Dual Electrocatalysts for High-Performance Solar-Driven Water Oxidation

  • Rajender Boddula
    Rajender Boddula
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
  • Beidou Guo
    Beidou Guo
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Beidou Guo
  • Akbar Ali
    Akbar Ali
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Akbar Ali
  • Guancai Xie
    Guancai Xie
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Guancai Xie
  • Yawen Dai
    Yawen Dai
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Yawen Dai
  • Chang Zhao
    Chang Zhao
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Chang Zhao
  • Yuxuan Wei
    Yuxuan Wei
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    More by Yuxuan Wei
  • Saad Ullah Jan
    Saad Ullah Jan
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
  • , and 
  • Jian Ru Gong*
    Jian Ru Gong
    Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, China
    University of CAS, Beijing 100049, China
    *E-mail: [email protected]
    More by Jian Ru Gong
Cite this: ACS Appl. Energy Mater. 2019, 2, 10, 7256–7262
Publication Date (Web):September 13, 2019
https://doi.org/10.1021/acsaem.9b01209
Copyright © 2019 American Chemical Society
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Abstract

Integration of electrocatalysts (ECs) with photoabsorbers is indispensable for high-performance solar water splitting. However, how the interaction between different ECs affects the performance is less explored. In the model system of the Si-based photoanode paired with different transition-metal-based EC dual layers, the oxygen evolution reaction with high efficiency and stability is obtained at low cost via synergetic effects of dual ECs. The spontaneous mutual doping between the EC dual layers greatly increases the conductivity of the electrode, thus facilitating the interfacial charge transfer, and the EC interlayer with high hole-accumulation ability can dramatically improve the hole collection capacity of the EC overlayer. In addition, the dynamic cycle of dissolution, diffusion, and deposition of a tiny amount of metal species between the EC dual layers favors the electrode stability. This work provides insightful guidance to interface design of high-performance devices for solar energy conversion.

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The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acsaem.9b01209.

  • Experimental details, fabrication of photoanodes, characterizations, PEC measurements, SEM images, XRD pattern, Raman spectra, XPS survey spectra, electrochemical measurements, JV curves, Faradaic efficiency, applied bias photon-to-current efficiency, electrochemical impedance spectroscopy, Tafel, ECSA, photovoltage, and Si-based photoanode materials comparison list (PDF)

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Cited By


This article is cited by 3 publications.

  1. Zhi Liu, Changli Li, Yequan Xiao, Faze Wang, Qian Yu, M. Bilal Faheem, Tao Zhou, Yanbo Li. Tailored NiFe Catalyst on Silicon Photoanode for Efficient Photoelectrochemical Water Oxidation. The Journal of Physical Chemistry C 2020, 124 (5) , 2844-2850. https://doi.org/10.1021/acs.jpcc.9b10967
  2. Rajender Boddula, Guancai Xie, Beidou Guo, Jian Ru Gong. Role of transition-metal electrocatalysts for oxygen evolution with Si-based photoanodes. Chinese Journal of Catalysis 2021, 42 (8) , 1387-1394. https://doi.org/10.1016/S1872-2067(20)63647-6
  3. Liya Fan, Xiao Zhang, Chuanqun Zhang, Jiangshan Li, Chenglin Wu, Yuxiao Chu, Fangqi Ge, Yiyuan Liu, Xianqiang Xiong. A highly efficient α-Fe2O3/NiFe(OH)x photoelectrode for photocathodic protection of 304 stainless steel under visible light. Surface and Coatings Technology 2020, 403 , 126407. https://doi.org/10.1016/j.surfcoat.2020.126407