Fabrication of composite material of RuCo₂O₄ and graphene on nickel foam for supercapacitor electrodes.

ABSTRACT: Supercapacitors are energy storage devices with the advantage of rapid charging and discharging, which need a higher specific capacitance and superior cycling stability. Hence, a composite material consisting of RuCo₂O₄ and reduced graphene oxide with a nanowire network structure was synthesized on nickel foam using a one-step hydrothermal method and annealing process. The nanowire network structure consists of nanowires with gaps that provide more active sites for electrochemical reactions and shorten the diffusion path of electrolyte ions. The prepared electrodes exhibit outstanding electrochemical performance with 2283 F g^-1 at 1 A g^-1. When the current density is 10 A g^-1, the specific capacitance of the electrodes is 1850 F g

SUBMITTER: Meng J 

PROVIDER: S-EPMC9125383 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature