Multimetal-substituted pyrite-type NiS2 nanosheets for bifunctional electrocatalysis in alkaline media

International Journal of Electrochemical Science 2026 Open access

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Authors: Qihao Cui, Baipo Shu, Yichun Liu, Yi Wan, Rongguang Xiao, Fenghao Nie, Can Wang, Yunying Fan
DOI: 10.1016/j.ijoes.2026.101306
Cited by: 1
References: 38

Abstract

Efficient bifunctional electrocatalysts are vital for water electrolysis. We overcome limitations of sulfide catalysts by fabricating FeAlVNi dual-sulfide nanosheets via a quaternary synergy strategy. Fe/V dual-doping, validated by PDOS, enhances the density of states near the Fermi level. The nanowire structure ensures efficient charge transport (70% lower impedance) and abundant active sites. In 1 M KOH, the catalyst shows low overpotentials of 214 mV (OER) and 88 mV (HER) at 10 mA cm -2 , requiring only 1.65 V for overall water splitting. Fe/V optimize electronic structure while Al enhances stability, offering new insights for designing multicomponent sulfide catalysts.

Fields of Study & Subjects

Electrocatalysts for Energy Conversion CO2 Reduction Techniques and Catalysts Ammonia Synthesis and Nitrogen Reduction

Publication details

Journal / source
International Journal of Electrochemical Science
Publisher
Elsevier BV
Volume
21
Issue
3
Pages
101306–101306
Publication date
30 January 2026
Language
EN