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EXCELLENT ELECTROCATALYSIS OF OXYGEN EVOLUTION USING Co(OH)x(WO4)y/MESOPOROUS CARBON NANOCOMPOSITES

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  • PENGHUI CAO

    (Institute of Bismuth Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China)

  • YUHUA YAN

    (Institute of Bismuth Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China)

  • XINLI TIAN

    (Institute of Bismuth Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China)

  • RUIZHUO OUYANG

    (Institute of Bismuth Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China)

  • YUQING MIAO

    (Institute of Bismuth Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China)

Abstract

Oxygen evolution reaction (OER) is of great importance in splitting water. However, the sluggish OER kinetics at the anode severely hinders the H2 evolution at the cathode which is a crucial procedure for energy storage. Herein, we report the synthesis of a new OER catalyst of Co(OH)x(WO4)y via a one-step hydrothermal method, where the incorporation of WO42− as a condenser greatly enhanced the electrocatalytic activity of Co(OH)2 toward OER. Moreover, the introduction of mesoporous carbon (MC) further improves the electrocatalytic performance of Co(OH)x(WO4)y by forming the nanocomposites of Co(OH)x(WO4)y/MC. The synergism between Co(OH)2 and WO42− and the synergistic catalytic effect of Co(OH)x(WO4)y and MC majorly contributed to the apparently enhanced electrocatalysis of Co(OH)x(WO4)y/MC toward OER. This work provides an efficient strategy to improve the electrocatalytic activity of Co(OH)2 by introducing WO42− and forming nanocomposites between Co(OH)x(WO4)y and MC for low-cost, convenient and highly efficient water oxidation.

Suggested Citation

  • Penghui Cao & Yuhua Yan & Xinli Tian & Ruizhuo Ouyang & Yuqing Miao, 2021. "EXCELLENT ELECTROCATALYSIS OF OXYGEN EVOLUTION USING Co(OH)x(WO4)y/MESOPOROUS CARBON NANOCOMPOSITES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(01), pages 1-7, January.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:01:n:s0218625x20500328
    DOI: 10.1142/S0218625X20500328
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