Gradient Heating Epitaxial Growth Gives Well Lattice-Matched Mo2C−Mo2N Heterointerfaces that Boost Both Electrocatalytic Hydrogen Evolution and Water Vapor Splitting

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Youzi Zhang
  • Peng Guo
  • Shaohui Guo
  • Xu Xin
  • Yijin Wang
  • Wenjing Huang
  • Bowen Yang
  • Ana Jorge Sobrido
  • Jahan B. Ghasemi
  • Jiaguo Yu
  • Xuanhua Li

Detail(s)

Original languageEnglish
Article numbere202209703
Journal / PublicationAngewandte Chemie - International Edition
Volume61
Issue number47
Online published7 Sep 2022
Publication statusPublished - 25 Oct 2022

Abstract

An optimized approach to producing lattice-matched heterointerfaces for electrocatalytic hydrogen evolution has not yet been reported. Herein, we present the synthesis of lattice-matched Mo2C−Mo2N heterostructures using a gradient heating epitaxial growth method. The well lattice-matched heterointerface of Mo2C−Mo2N generates near-zero hydrogen-adsorption free energy and facilitates water dissociation in acid and alkaline media. The lattice-matched Mo2C−Mo2N heterostructures have low overpotentials of 73 mV and 80 mV at 10 mA cm−2 in acid and alkaline solutions, respectively, comparable to commercial Pt/C. A novel photothermal-electrocatalytic water vapor splitting device using the lattice-matched Mo2C−Mo2N heterostructure as a hydrogen evolution electrocatalyst displays a competitive cell voltage for electrocatalytic water splitting.

Research Area(s)

  • Heterointerfaces, Hydrogen Evolution, Lattice-Matched, Mo2C-Mo2N, Water Vapor Splitting, MOLYBDENUM CARBIDE, EFFICIENT, PERFORMANCE, MO2C, CATALYSIS, HYBRID, ROBUST, MOS2

Citation Format(s)

Gradient Heating Epitaxial Growth Gives Well Lattice-Matched Mo2C−Mo2N Heterointerfaces that Boost Both Electrocatalytic Hydrogen Evolution and Water Vapor Splitting. / Zhang, Youzi; Guo, Peng; Guo, Shaohui et al.

In: Angewandte Chemie - International Edition, Vol. 61, No. 47, e202209703, 25.10.2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review