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- W4381743304 endingPage "119026" @default.
- W4381743304 startingPage "119026" @default.
- W4381743304 abstract "Defect-engineering and heterojunction-creating on a catalyst have been endorsed as effective approaches to enhance the hydrogen evolution reaction (HER) behavior. By skillfully employing the transformation of Cu2S/Ni3S2 to NiO/Cu2O and the electroreduction of partial Cu2O to Cu/Cu2O for the O-vacancy (Ov) production and in-situ reactions for the heterostructure construction, we fabricated a self-supported heterostructured hybrid with Ov-rich Cu/Cu2O coupled with few NiO grown in-situ on the NiCu bimetallic foam (named as Cu/NiO/Cu2[email protected]). Cu/NiO/Cu2[email protected] records a low overpotential of 79 mV at 10 mA cm−2 with a small Tafel slope of 60 mV dec−1 and sustained the activity without distinct decay for 100 h towards catalyzing HER in 1.0 M KOH. More profoundly, density functional theory computations reveal that Ov-Cu2O holds a much lower energy barrier for the rate-determining step of the H2O dissociation and a more electron density with respect to Ov-NiO, thereby accelerating the alkaline HER kinetics." @default.
- W4381743304 created "2023-06-24" @default.
- W4381743304 creator A5003105136 @default.
- W4381743304 creator A5007477535 @default.
- W4381743304 creator A5007874691 @default.
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- W4381743304 creator A5054029664 @default.
- W4381743304 creator A5072315367 @default.
- W4381743304 creator A5079564527 @default.
- W4381743304 date "2023-06-01" @default.
- W4381743304 modified "2023-09-23" @default.
- W4381743304 title "O-vacancy-rich and heterostructured Cu/Cu2O/NiO@NiCu foam self-supported advanced electrocatalyst towards hydrogen evolution: An experimental and DFT study" @default.
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