Abstract
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.
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献