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- W2507270644 abstract "Efficient oxygen-evolution reaction catalysts are required for the cost-effective generation of solar fuels. Metal selenides have been reported as promising oxygen-evolution catalysts; however, their active forms are yet to be elucidated. Here we show that a representative selenide catalyst, nickel selenide, is entirely converted into nickel hydroxide under oxygen-evolution conditions. This result indicates that metal selenides are unstable during oxygen evolution, and the in situ generated metal oxides are responsible for their activity. This knowledge inspired us to synthesize nanostructured nickel iron diselenide, a hitherto unknown metal selenide, and to use it as a templating precursor to a highly active nickel iron oxide catalyst. This selenide-derived oxide catalyses oxygen evolution with an overpotential of only 195 mV for 10 mA cm(-2). Our work underscores the importance of identifying the active species of oxygen-evolution catalysts, and demonstrates how such knowledge can be applied to develop better catalysts." @default.
- W2507270644 created "2016-09-16" @default.
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- W2507270644 date "2016-08-09" @default.
- W2507270644 modified "2023-10-14" @default.
- W2507270644 title "A nickel iron diselenide-derived efficient oxygen-evolution catalyst" @default.
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- W2507270644 doi "https://doi.org/10.1038/ncomms12324" @default.
- W2507270644 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4980491" @default.
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