Co3O4/Zn-Co-Mo Nanomaterials and Their Applications in Supercapacitors and Electrocatalysis Hydrogen Evolution Reaction

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
View graph of relations



Original languageEnglish
Article number023504
Journal / PublicationJournal of the Electrochemical Society
Issue number2
Online published11 Feb 2022
Publication statusPublished - Feb 2022


Mixed transition metal compounds with abundant more active sites are attractive to supercapacitors and electrochemical water splitting. In this work, the Co3O4/Zn-Co-Mo/NF composite is prepared by a hydrothermal method and thermal annealing. The Zn-Co-Mo nanosheet arrays are synthesized on nickel foam (NF) to form a three-dimensional (3D) network to take advantage of the electrical conductivity and viscosity of NF. Co3O4 is produced directly in the 3D microchannels to achieve a large energy density and robust stability. In the test of the supercapacitor performance, the specific capacitance of Co3O4/Zn-Co-Mo/NF is 2169 F g-1 at a current density of 1 A g-1. In addition, excellent long-term cycling stability is observed as manifested by specific capacitance retention of 85% after 4,000 cycles at a current density of 25 A g-1. As a catalyst in the hydrogen evolution reaction (HER), Co3O4/Zn-Co-Mo/NF shows an overpotential of 128 mV at 10 mA cm-2. Our results confirm the dual functionality of the materials which have promising potential in energy storage and generation applications. 
(c) 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.

Research Area(s)


Citation Format(s)