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• W3149259898 startingPage "129686" @default.
• W3149259898 abstract "• ·Amorphous cobalt–nickel phosphide films were electrodeposited on Ni foam under ambient conditions. • ·The morphology of the deposited phosphide films varies with deposition time. • ·The deposited films exhibited excellent hydrogen evolution and water oxidation activities in base. • ·Overall water splitting was achieved at 410 mV overpotentials to reach 10 mA cm −2 . The synthesis of active and stable electrochemical water splitting catalysts using the earth-abundant elements is the key to reduce the cost of hydrogen production. In this paper, a series of cobalt–nickel phosphide films was electrodeposited on nickel foam substrates (Co-Ni-P), and the resulting electrodes are active in catalyzing both the hydrogen evolution reaction (HER) and water oxidation reaction (WOR) in alkaline solutions. The most active electrode towards HER required 92 mV overpotentials to reach − 10 mA cm −2 current densities, and the Tafel slope was 87.6 mV dec −1 . Meanwhile, for WOR, the most active electrode needed 277 mV overpotentials to reach the 10 mA cm −2 WOR current densities, with the Tafel slope at 63.6 mV dec −1 . The excellent performance is mainly owing to the high number of electrochemically active sites endowed by the unique morphology, and the possible electron interaction between Co and Ni. Water electrolysis carried out using the most active electrodes exhibited 1.64 V (410 mV overpotentials) to reach the current density of 10 mA cm −2 , which suggests the Co-Ni-P prepared using this method is a promising candidate as electrodes to catalyze overall water splitting." @default.
• W3149259898 created "2021-04-13" @default.
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• W3149259898 date "2021-09-01" @default.
• W3149259898 modified "2023-10-17" @default.
• W3149259898 title "Electrodeposited amorphous cobalt-nickel-phosphide-derived films as catalysts for electrochemical overall water splitting" @default.
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• W3149259898 doi "https://doi.org/10.1016/j.cej.2021.129686" @default.
• W3149259898 hasPublicationYear "2021" @default.
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