MXene Analogue: A 2D Nitridene Solid Solution for High Rate Hydrogen Production
Files
(Published version)
Date
2022
Authors
Jin, H.
Yu, H.
Li, H.
Davey, K.
Song, T.
Paik, U.
Qiao, S.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Angewandte Chemie International Edition, 2022; 61(27)
Statement of Responsibility
Dr. Huanyu Jin, Dr. Huimin Yu, Dr. Haobo Li, Prof. Kenneth Davey, Dr. Taeseup Song, Prof. Ungyu Paik, Prof. Shi-Zhang Qiao
Conference Name
Abstract
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.
School/Discipline
Dissertation Note
Provenance
Description
First published: 19 April 2022
Access Status
Rights
© 2022 The Authors.Angewandte Chemie International Edition published by Wiley-VCHGmbH.This is an open access article under the terms of the Creative Commons Attribution License,which permits use, distribution and reproduction in any medium,provided the original work is properly cited.