制氢
双金属片
催化作用
溶解
MXenes公司
氮化物
化学工程
氢
熔盐
化学
材料科学
无机化学
纳米技术
物理化学
有机化学
图层(电子)
工程类
作者
Huanyu Jin,Huimin Yu,Haobo Li,Kenneth Davey,Taeseup Song,Ungyu Paik,Shi‐Zhang Qiao
标识
DOI:10.1002/anie.202203850
摘要
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, V0.2 Mo0.8 N1.2 , with tunable electrocatalytic property. The molten-salt synthesis reduces the growth barrier of V0.2 Mo0.8 N1.2 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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