期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 27, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202203850
关键词
2D Nitridene; Catalyst Design; Electrocatalysis; Hydrogen Evolution; MXenes
资金
- Australian Research Council [DP160104866, FL170100154]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20203030040030]
- University of Adelaide, Future Making Fellowship
A V-Mo bimetallic nitridene solid solution with tunable electrocatalytic property has been successfully synthesized using a catalytic molten-salt method, addressing the slow growth kinetics issue in nitridene synthesis. Computational simulations confirm that V doping leads to an optimized electronic structure for fast protons coupling to produce hydrogen.
Electrocatalysts for high-rate hydrogen evolution reaction (HER) are crucial to clean fuel production. Nitrogen-rich 2D transition metal nitride, designated nitridene, has shown promising HER performance because of its unique physical/chemical properties. However, its synthesis is hindered by the sluggish growth kinetics. Here for the first time using a catalytic molten-salt method, we facilely synthesized a V-Mo bimetallic nitridene solid solution, V0.2Mo0.8N1.2, with tunable electrocatalytic property. The molten-salt synthesis reduces the growth barrier of V0.2Mo0.8N1.2 and facilitates V dissolution via a monomer assembly, as confirmed by synchrotron spectroscopy and ex situ electron microscopy. Furthermore, by merging computational simulations, we confirm that the V doping leads to an optimized electronic structure for fast protons coupling to produce hydrogen. These findings offer a quantitative engineering strategy for developing analogues of MXenes for clean energy conversions.
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