Affiliation:
1. Department of Materials Engineering, Tarbiat Modares University, Tehran 14115111, Iran
2. Department of Natural Sciences, Mid Sweden University, 85170 Sundsvall, Sweden
Abstract
Recently, much research has investigated nanocomposites and their properties for the development of energy storage systems. Supercapacitor performance is usually enhanced by the use of porous electrode structures, which produce a larger surface area for reaction. In this work, a biocompatible polymer of starch medium was used to create the porous nanostructure. Two powders, i.e., Nickel molybdate/reduced graphene oxide (NiMoO4-rGO) and Nickel molybdate/nitrogen-doped reduced graphene oxide (NiMoO4-NrGO), were synthesized using the deposition method in a medium containing starch, nickel nitrate salts, sodium molybdate, and graphene oxide powder. In terms of electrochemical performance, the NiMoO4-NrGO electrode displayed a higher specific capacitance, i.e., 932 Fg−1 (466 Cg−1), than the NiMoO4-rGO electrode, i.e., 884 Fg−1 (442 Cg−1), at a current density of 1 Ag−1. In fact, graphene oxide sheets could lose more oxygen groups in the presence of ammonia, resulting in increased electrical conductivity. For the asymmetric supercapacitor of NiMoO4-NrGO//AC, the specific capacitance at 1 Ag−1, energy density, and power density were 101.2 Fg−1 (111.32 Cg−1), 17 Wh kg−1, and 174.4 kW kg−1, respectively. In addition, this supercapacitor material displayed a good cycling stability of over 82%.
Subject
Engineering (miscellaneous),Ceramics and Composites
Reference63 articles.
1. Advanced Materials for Energy Storage;Liu;Adv. Mater.,2010
2. Tuning the electronic structure of a metal–organic framework for an efficient oxygen evolution reaction by introducing minor atomically dispersed ruthenium;Li;Carbon Energy,2023
3. Conducting polymer-based flexible supercapacitor;Shown;Energy Sci. Eng.,2015
4. Syntheses and applications of carbon nanotubes and their composites;Karthikeyan;Carbon App.,2013
5. Wang, K., Chen, C., Li, Y., Hong, Y., Wu, H., Zhang, C., and Zhang, Q. (2023). Insight into Electrochemical Performance of Nitrogen-Doped Carbon/NiCo-Alloy Active Nanocomposites. Small, 2300054.
Cited by
1 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