Issue 21, 2022

Interface engineering of hierarchical P-doped NiSe/2H-MoSe2 nanorod arrays for efficient hydrogen evolution

Abstract

Developing non-noble metal-based electrocatalysts with excellent activity and stability for the hydrogen evolution reaction (HER) is crucial for the efficient electrolysis of water. Herein, self-supported three-dimensional (3D) P-doped NiSe/2H-MoSe2 nanorod arrays (denoted as P-NiSe/MoSe2) were fabricated by a hydrothermal reaction and subsequent selenization and phosphorization processes. Benefiting from P doping, the synergistic effect of the heterostructures, and abundant active sites, the P-NiSe/MoSe2 electrocatalyst exhibits excellent alkaline HER performance, with only 43 mV required to achieve 10 mA cm−2 with a Tafel slope of 93.1 mV dec−1, even remaining stable at 10 mA cm−2 for 30 hours. In addition, theoretical calculations show that the formation of the heterostructure and P doping optimize the H atom adsorption energies and accelerate electron transport, thus improving its performance in the HER. This work offers a hopeful route for the development of low-cost and efficient electrocatalysts through the simultaneous application of heterostructure engineering and heteroatom doping as well as a 3D structure.

Graphical abstract: Interface engineering of hierarchical P-doped NiSe/2H-MoSe2 nanorod arrays for efficient hydrogen evolution

Supplementary files

Article information

Article type
Research Article
Submitted
12 jul 2022
Accepted
26 aug 2022
First published
27 aug 2022

Inorg. Chem. Front., 2022,9, 5507-5516

Interface engineering of hierarchical P-doped NiSe/2H-MoSe2 nanorod arrays for efficient hydrogen evolution

X. Xu, R. Wang, S. Chen, A. Trukhanov, Y. Wu, L. Shao, L. Huang and Z. Sun, Inorg. Chem. Front., 2022, 9, 5507 DOI: 10.1039/D2QI01498J

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