Electrochemical performance of nickel hydroxide nanopetals for supercapacitor electrodes

•Chemically precipitated Ni(OH)2 over graphite foil as supercapacitor electrode.•Demonstrated laudable specific capacitance of 701 F g−1 at 1 Ag−1.•Favourable capacitance retention of 84.16% achieved even after 5000 redox cycles.•Unrestricted ion movement on electrode surface increased charge storag...

Ausführliche Beschreibung