Vanadium-doped MoSe2 Nanosheets: Induced lattice contraction and enhanced conductivity for superior hydrogen evolution reaction

IF 4.7 3区工程技术 Q2 ELECTROCHEMISTRY

Electrochemistry Communications Pub Date : 2025-03-22 DOI:10.1016/j.elecom.2025.107916

Ramaraj Sukanya , Raj Karthik , Abdullah Al Mahmud , Deivasigamani Ranjith Kumar , Eswaran Kamaraj , Carmel B. Breslin , Jae-Jin Shim

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Abstract

In the modern world with a growing global energy demand, renewable hydrogen has emerged as a viable and attractive option. Herein, a highly efficient electrocatalyst for the hydrogen evolution reaction (HER) in an acidic medium was designed by doping MoSe₂ with vanadium (V-MoSe₂). The V-doped MoSe₂ was formed using a simple hydrothermal reaction and characterised using FE-SEM, FE-TEM, XRD and XPS. The V-MoSe₂ was superior to MoSe₂ and comparable to Pt/C in the HER. An overpotential of 217 mV for Pt/C and 353 mV for V-MoSe₂ was required to deliver a current density of 10 mA/cm². This enhanced HER activity seen with V-MoSe₂ was attributed to a lattice contraction, a more metallic-like phase with enhanced electrical conductivity, and an increase in the density of catalytically active sites that promote the HER.

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来源期刊

Electrochemistry Communications 工程技术-电化学

CiteScore

8.50

自引率

3.70%

发文量

160

审稿时长

1.2 months

期刊介绍： Electrochemistry Communications is an open access journal providing fast dissemination of short communications, full communications and mini reviews covering the whole field of electrochemistry which merit urgent publication. Short communications are limited to a maximum of 20,000 characters (including spaces) while full communications and mini reviews are limited to 25,000 characters (including spaces). Supplementary information is permitted for full communications and mini reviews but not for short communications. We aim to be the fastest journal in electrochemistry for these types of papers.