Journal
NANO RESEARCH
Volume 13, Issue 9, Pages 2407-2412Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-020-2865-y
Keywords
hydrogen evolution reaction; hierarchical materials; interface; electrocatalysis; vanadium oxide
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Funding
- National Natural Science Foundation of China [11874005, 21701153, 51601030, 21773023]
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Electrocatalytic water splitting offers a sustainable route for hydrogen production, enabling the clean and renewable alternative energy system of hydrogen economy. The scarcity and high-cost of platinum-group-metal (PGM) materials urge the exploration of high-performance non-PGM electrocatalysts. Herein, a unique hierarchical structure of Ni/V(2)O(3)with extraordinary electrocatalytic performance (e.g., overpotentials as low as 22 mV at 20 mA center dot cm(-2)and 94 mV at 100 mA center dot cm(-2)) toward hydrogen evolution reaction in alkaline electrolyte (1 M KOH) is reported. The investigation on the hierarchical Ni/V(2)O(3)with a bimodal size-distribution also offers insight of interfacial engineering that only proper Ni/V(2)O(3)interface can effectively improve H2O adsorption, H2O dissociation as well as H adsorption, for an efficient hydrogen production.
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