University of Wollongong
Browse

Heteroatom-doped MoSe2 Nanosheets with Enhanced Hydrogen Evolution Kinetics for Alkaline Water Splitting

Download (786.56 kB)
journal contribution
posted on 2024-11-16, 05:04 authored by Guoqiang Zhao, Xingyong Wang, Shaolan Wang, Kun Rui, Yaping Chen, Haibo YuHaibo Yu, Jing Ma, Shi DouShi Dou, Wenping Sun
Electrochemical water splitting for hydrogen generation is a vital part for the prospect of future energy systems, however, the practical utilization relies on the development of highly active and earth-abundant catalysts to boost the energy conversion efficiency as well as reduce the cost. Molybdenum diselenide (MoSe2) is a promising nonprecious metal-based electrocatalyst for hydrogen evolution reaction (HER) in acidic media, but it exhibits inferior alkaline HER kinetics in great part due to the sluggish water adsorption/dissociation process. Herein, the alkaline HER kinetics of MoSe2 is substantially accelerated by heteroatom doping with transition metal ions. Specifically, the Ni-doped MoSe2 nanosheets exhibit the most impressive catalytic activity in terms of lower overpotential and larger exchange current density. The density functional theory (DFT) calculation results reveal that Ni/Co doping plays a key role in facilitating water adsorption as well as optimizing hydrogen adsorption. The present work paves a new way to the development of low-cost and efficient electrocatalysts towards alkaline HER.

Funding

Lithium-Ion Conducting Sulfide Cathodes for All-Solid-State Li–S Batteries

Australian Research Council

Find out more...

History

Citation

Zhao, G., Wang, X., Wang, S., Rui, K., Chen, Y., Yu, H., Ma, J., Dou, S. Xue. & Sun, W. (2019). Heteroatom-doped MoSe2 Nanosheets with Enhanced Hydrogen Evolution Kinetics for Alkaline Water Splitting. Chemistry: An Asian Journal, 14 (2), 301-306.

Journal title

Chemistry - An Asian Journal

Volume

14

Issue

2

Pagination

301-306

Language

English

RIS ID

132400

Usage metrics

    Categories

    Keywords

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC