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• W3204148546 endingPage "162244" @default.
• W3204148546 startingPage "162244" @default.
• W3204148546 abstract "• The Ni 3 Se 2 @FeOOH heterostructure nanoforests in-situ grow on nickel foam substrate. • The introduction of FeOOH phase obviously enhances the electrocatalytic performance. • Ni 3 Se 2 @FeOOH/NF exhibit excellent OER, HER, and overall water splitting activity. • The formed heterointerfaces between FeOOH and Ni 3 Se 2 contribute to the high activity. Rational construction of interface engineering is a highly effective strategy for modifying the surface properties and enhancing the intrinsic activity of a catalyst. Herein, the three-dimensional (3D) hierarchical Ni 3 Se 2 @FeOOH heterostructure nanoforests with rich heterointerfaces were integrated into nickel foam (Ni 3 Se 2 @FeOOH/NF) for electrochemical overall water splitting. Coupling FeOOH with Ni 3 Se 2 can favor the formation of oxygen-containing intermediate (*OOH) and facilitate the dissociation of H 2 O and adsorption of hydrogen (*H), thus dramatically boosting the electrocatalytic oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) simultaneously. Furthermore, the self-supported electrode with Ni 3 Se 2 @FeOOH heterostructure nanoforests in-situ grown on NF can reduce the indirect contact resistance between the electrocatalyst and substrate, provide abundant electroactive sites, and promote the release of the generated bubbles from electrode timely. Consequently, the Ni 3 Se 2 @FeOOH/NF displays outstanding electrocatalytic activity with low overpotentials of 224 mV and 87 mV at 10 mA cm −2 for OER and HER, respectively. When used as a bifunctional electrocatalyst in a 1 M KOH electrolyzer, the Ni 3 Se 2 @FeOOH/NF exhibits a low cell voltage of 1.54 V to drive 10 mA cm −2 and retains long-term durability over 20 h. This work demonstrates the significance of the heterostructure for improving the catalytic performance of non-noble composite electrocatalysts." @default.
• W3204148546 created "2021-10-11" @default.
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• W3204148546 date "2022-02-01" @default.
• W3204148546 modified "2023-09-25" @default.
• W3204148546 title "Interface engineering of Ni3Se2@FeOOH heterostructure nanoforests for highly-efficient overall water splitting" @default.
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• W3204148546 doi "https://doi.org/10.1016/j.jallcom.2021.162244" @default.
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