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

    https://doi.org/10.1142/S0218625X20500328Cited by:0 (Source: Crossref)

    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)yvia 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.