Electrochemical Properties of Porous Graphene/Polyimide-Nickel Oxide Hybrid Composite Electrode Material

Polyimide-graphene nanosheet composite electrodes are rigid and dense and, therefore, exhibit moderate electrochemical properties. The properties of polyimide-graphene were remarkably improved by creating voids in the followed insertion nickel oxide into composites. Nickel particles electrodeposited onto porous graphene/poly(amic acid) composite, containing poly (acrylic resin). hybrid was then subjected to thermal treatment at ≥ 300 °C simultaneously complete imidization degrade Cyclic Voltammetry (CV) impedance spectroscopy (EIS) used study eletrochemical electrode material. It is shown that remarkable improvement behavior occurred due removal poly(acrylic NiO polyimide matrix. Fourier Transform Infrared Spectroscopy (FTIR) spectra composites show distinct characteristic peaks for electrode. Scanning Electron Microscopy, SEM images composites, presence aggregates Compared neat graphene/polyimide (GR/PI) specific capacitance increased over 250% high interfacial surface area provided concomitant electrode–electrolyte interaction.