首页|NiO nanoparticles/graphene nanocomposite as high-performance pseudocapacitor electrodes: Design and implementation
NiO nanoparticles/graphene nanocomposite as high-performance pseudocapacitor electrodes: Design and implementation
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NSTL
Elsevier
? 2022 Elsevier B.V.A simple hydrothermal approach was used to successfully fabricate NiO/G nanocomposites. Since the addition of nickel oxide nanoparticles (NiO) to graphene instead of conducting polymeric materials produces better capacitances and improved capacity retention. Graphene-based inorganic composites have been attracting more and more attention. The as prepared NiO/G nanocomposite is characterized by XRD, TEM, Raman, XPS and nitrogen adsorption/desorption. It is demonstrated that NiO nanoparticles adorn graphene sheets to generate hierarchical nanostructures with rich porosity (33.8 nm) and substantial specific surface area (51 m2 g?1). Electrochemical characterization demonstrate that the mesoporous graphene/NiO can deliver a specific capacitance of 632 F g?1 at a current density of 2 Ag?1 and have a capacitance retention of 99.7% at 2Ag?1 after 6000 continuous charge–discharge cycles. In addition, the ASC constructed from NiO/G shows excellent energy density (30.56 Whkg?1), excellent power density (2800 Wkg?1) and impressive cycle performance (capacitance retention after 6000 cycles is approximately 92.7%). This strategy aids in the fabrication and utilization of hybrid nanocomposite in high-geared reversible supercapacitors.
NSTL
Elsevier
