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• W4308038039 endingPage "140056" @default.
• W4308038039 startingPage "140056" @default.
• W4308038039 abstract "• NiCoMo arrays with nanowires/nanosheets architecture is fabricated as a pre-catalyst. • Surface evolutions of NiCoMo pre-catalyst in alkaline solution are clarified. • Incorporation of Mo has versatile promotion effects on electrocatalytic performances. • Surface-engineered NiCoMo catalysts are highly active for MOR and HER. • Methanol electro-reforming generates hydrogen and value-added formate separately. Electro-reforming of methanol under ambient conditions is considered as an attractive strategy for energy-efficient hydrogen production. Developing high-performance and cost-effective electrocatalysts is indispensable for boosting the electro-reforming reaction. Herein, a NiCoMo alloy pre-catalyst featured by nanosheets covered nanowires arrays is proposed. The NiCoMo pre-catalyst undergoes surface reconstruction along with Mo leaching during the anodic cyclic voltammetry (CV) stabilization process, forming a Mo substituted NiCoOOH layer as a real catalyst. In contrast, the surface structure of NiCoMo almost remains unchanged after cathodic CV stabilization. The surface engineered catalysts are highly active, and thus the corresponding two-electrode cell for methanol electro-reforming delivers 50 mA cm -2 at 1.46 V with high stability over 50 h. The Faradaic efficiency of hydrogen and formate generation maintains above 98% and 85% respectively after 50 h of co-electrolysis. Experimental and theoretical results reveal that the Mo incorporation is of great importance for achieving efficient co-production of hydrogen and value-added formate, serving as structural stabilizing agent, surface reconstruction promoter, electronic structure modulator, and catalytic activity booster." @default.
• W4308038039 created "2022-11-07" @default.
• W4308038039 creator A5006600668 @default.
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• W4308038039 date "2023-02-01" @default.
• W4308038039 modified "2023-10-02" @default.
• W4308038039 title "Versatile Mo modulation effects enable efficient electrocatalytic aqueous methanol electro-reforming over surface-engineered NiCoMo alloy" @default.
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• W4308038039 doi "https://doi.org/10.1016/j.cej.2022.140056" @default.
• W4308038039 hasPublicationYear "2023" @default.
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