Issue 3, 2022

NiSe2/FeSe2 heterostructured nanoparticles supported on rGO for efficient water electrolysis

Abstract

Development of a cost-effective and highly abundant catalyst for overall water splitting is highly desirable. Herein, we report a feasible approach to fabricate a catalyst based on phase-separated heterointerfaces in which heterostructured NiSe2 and FeSe2 are supported on a reduced graphene oxide composite (NiSe2/FeSe2/rGO), which may improve the intrinsic properties of materials. The as-prepared catalyst shows excellent oxygen evolution reaction (OER) (260 mV@10 mA cm−2), hydrogen evolution reaction (HER) (101 mV@10 mA cm−2) and total water splitting (1.57 V@10 mA cm−2) activities in alkaline solution. The NiSe2/FeSe2/rGO catalyst also exhibits fast charge transfer ability, long-term stability and a large electrochemically active surface area. The multi-metal active sites generate a remarkable synergistic effect and carbon channels also support electron transmission during the water splitting process. This work provides a new perspective to analyze the role of heterostructure-based materials in the water electrolysis.

Graphical abstract: NiSe2/FeSe2 heterostructured nanoparticles supported on rGO for efficient water electrolysis

Supplementary files

Article information

Article type
Research Article
Submitted
23 Xim 2021
Accepted
14 Kax 2021
First published
14 Kax 2021

Inorg. Chem. Front., 2022,9, 448-457

NiSe2/FeSe2 heterostructured nanoparticles supported on rGO for efficient water electrolysis

M. Ahmad, B. Xi, Y. Gu, H. Zhang and S. Xiong, Inorg. Chem. Front., 2022, 9, 448 DOI: 10.1039/D1QI01473K

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