Viswanathan, A.Nityananda Shetty, A.2026-02-062018AIP Conference Proceedings, 2018, Vol.1943, , p. -0094243Xhttps://doi.org/10.1063/1.5029642https://idr.nitk.ac.in/handle/123456789/31512The reduced graphene oxide/polyaniline/Ni(OH)<inf>2</inf> (GP-Ni(OH)<inf>2</inf>) and reduced graphene oxide/polyaniline/Ni (GP-Ni) nanocomposites were synthesized by facile in situ single step chemical method. The constituents were confirmed by powder-XRD, and the electrochemical characterizations were carried out using cyclic voltammetry(CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS). The electrochemical contribution of Ni(OH)<inf>2</inf> and Ni to their supercapacitance along with reduced graphene oxide and polyaniline was compared. The GP-Ni nanocomposite exhibited a specific capacitance of 266.66 F g-1, energy density of 53.33 W h kg-1 and power density of 1385 W kg-1 at a current density of 0.25 A g-1 and the results were enhanced to 21% and more promising than that of nanocomposite GP-Ni(OH)<inf>2</inf>. © 2018 Author(s).Energy densityNickelNickel hydroxidePower densitySpecific capacitance