Jump to main content
Jump to site search


Mo, Co co-doped NiS bulks supported on Ni foam as an efficient electrocatalyst for overall water splitting in alkaline media

Author affiliations

Abstract

In this study, a composite of Mo, Co co-doped NiS bulks grown on an Ni foam (Mo,Co-NiS/NF) was synthesized as a bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) using a simple method. The existence of ZIF-67 and Mo ensure the even distribution of Co and Mo elements and the formation of N doped carbon layer in Mo, Co-NiS/NF. Mo, Co co-doping and NF support greatly improved the electrocatalytic performance of NiS bulks, because metal element doping could improve the intrinsic activity and electrical conductivity. Moreover, the Ni foam could act as a substrate to avoid aggregation and provide nickel source to form the bimetallic sulfide. The product Mo,Co-NiS/NF-400 showed outstanding electrochemical properties, with ultralow overpotential (92 mV vs. RHE) for HER and ultralow overpotential (117.2 mV vs. RHE) for OER to achieve 10 mA cm−2, as well as the ultralow cell voltage (1.36 V) to achieve 20 mA cm−2 for overall water splitting. This study provides an available method to promote the electrocatalytic activity of the traditional monometallic sulfides for overall water splitting.

Graphical abstract: Mo, Co co-doped NiS bulks supported on Ni foam as an efficient electrocatalyst for overall water splitting in alkaline media

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Sep 2019, accepted on 04 Nov 2019 and first published on 04 Nov 2019


Article type: Paper
DOI: 10.1039/C9SE00822E
Sustainable Energy Fuels, 2019, Advance Article

  •   Request permissions

    Mo, Co co-doped NiS bulks supported on Ni foam as an efficient electrocatalyst for overall water splitting in alkaline media

    C. Wu, Y. Du, Y. Fu, D. Feng, H. Li, Z. Xiao, Y. Liu, Y. Yang and L. Wang, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C9SE00822E

Search articles by author

Spotlight

Advertisements