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• W4384564757 endingPage "1499" @default.
• W4384564757 startingPage "1490" @default.
• W4384564757 abstract "Despite great efforts over the past decade, rational design of bifunctional electrocatalysts with low cost and high efficiency still remains a challenge to achieve industrial water splitting. Herein, we synthesized the nickel-molybdenum nanorod array catalyst supported on NF (NMO@NM/MO) by a two-step process of hydrothermal and reductive annealing. Partial reduction of the NiMoO4 induces the structural reconstruction and formation of the Ni4Mo/MoO2 heterostructure on oxygen vacancy enriched nanorod, which bring out sufficient active sites, large specific surface area and favorable interfacial charge transfer. Thanks to the unique core-shell structure with the heterostructured Ni4Mo/MoO2 surface and defect-rich NiMoO4 core, the obtained electrocatalyst shows greatly improved hydrogen evolution reaction (HER) activity with an ultralow overpotential of 63 mV at 100 mA cm-2 (vs. 314 mV for the NiMoO4). Density function theory calculations reveal that the construction of the Ni4Mo/MoO2 heterostructure effectively accelerates H2O dissociation kinetics, while the defective NiMoO4 facilitates H* adsorption/desorption. Moreover, the heterostructure catalyst also displays excellent oxygen evolution reaction (OER) performance with the low overpotential of 274 mV at 100 mA cm-2. When coupling HER and OER by using NMO@NM/MO as both the cathode and anode, the alkaline electrolyzer delivers a current density of 10 mA cm-2 at only 1.50 V as well as good robustness. The synergistic effect of the hetero-interface and the defect engineering endows the electrocatalyst with excellent bifunctional catalytic activity for HER and OER. This work may provide a route for rational design of heterostructure electrocatalysts with multiple active components." @default.
• W4384564757 created "2023-07-18" @default.
• W4384564757 creator A5019735991 @default.
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• W4384564757 date "2023-11-01" @default.
• W4384564757 modified "2023-09-26" @default.
• W4384564757 title "Construction of Ni4Mo/MoO2 Heterostructure on Oxygen Vacancy Enriched NiMoO4 Nanorods as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting" @default.
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• W4384564757 doi "https://doi.org/10.1016/j.jcis.2023.07.098" @default.
• W4384564757 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37481786" @default.
• W4384564757 hasPublicationYear "2023" @default.
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