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- W2740900380 abstract "Developing efficient and durable oxygen evolution electrocatalyst is of paramount importance for the large-scale supply of renewable energy sources. Herein, we report the design of significant surface hydrophilicity based on cobalt oxyhydroxide (CoOOH) nanosheets to greatly improve the surface hydroxyl species adsorption and reaction kinetics at the Helmholtz double layer for high-efficiency water oxidation activity. The as-designed CoOOH-graphene nanosheets achieve a small surface water contact angle of ∼23° and a large double-layer capacitance (Cdl) of 8.44 mF/cm2 and thus could evidently strengthen surface species adsorption and trigger electrochemical oxygen evolution reaction (OER) under a quite low onset potential of 200 mV with an excellent Tafel slope of 32 mV/dec. X-ray absorption spectroscopy and first-principles calculations demonstrate that the strong interface electron coupling between CoOOH and graphene extracts partial electrons from the active sties and increases the electron state density around the Fermi level and effectively promotes the surface intermediates formation for efficient OER." @default.
- W2740900380 created "2017-08-08" @default.
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- W2740900380 date "2017-08-04" @default.
- W2740900380 modified "2023-10-15" @default.
- W2740900380 title "Strong Surface Hydrophilicity in Co-Based Electrocatalysts for Water Oxidation" @default.
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- W2740900380 doi "https://doi.org/10.1021/acsami.7b07088" @default.
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