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- W2904657824 abstract "The oxygen-evolution reaction (OER) is a key process in water-splitting systems, fuel cells, and metal-air batteries, but the development of highly active and robust OER catalyst by simple methods is a great challenge. Here, we report an in situ dynamic surface self-reconstruction that can dramatically improve the catalytic activity of electrocatalysts. A fluoride (F-)-incorporating NiFe hydroxide (NiFe-OH-F) nanosheet array was initially grown on Ni foam by a one-step hydrothermal method, which requires a 243 mV over-potential (η) to achieve a 10 mA cm-2 current density with a Tafel slope of 42.9 mV dec-1 in alkaline media. After the surface self-reconstruction induced by fluoride leaching under OER conditions, the surface of NiFe-OH-F was converted into highly mesoporous and amorphous NiFe oxide hierarchical structure, and the OER activity at η = 220 mV increases over 58-fold. The corresponding η at 10 mA cm-2 decreases to 176 mV with an extreme low Tafel slope of 22.6 mV dec-1; this performance is superior to that of the state-of-the-art OER electrocatalysts." @default.
- W2904657824 created "2018-12-22" @default.
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- W2904657824 date "2018-12-05" @default.
- W2904657824 modified "2023-10-03" @default.
- W2904657824 title "Fluoride-Induced Dynamic Surface Self-Reconstruction Produces Unexpectedly Efficient Oxygen-Evolution Catalyst" @default.
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- W2904657824 doi "https://doi.org/10.1021/acs.nanolett.8b04466" @default.
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- W2904657824 hasPublicationYear "2018" @default.
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