Nickel, cobalt, and manganese oxide composite as an electrode material for electrochemical supercapacitors

Abstract

A composite material, Ni1/3Co1/3Mn1/3(OH)2, is synthesized by chemical precipitation method for supercapacitors' electrode material. Physical characterizations using x-ray diffraction, energy-dispersive x-ray, and scanning electron microscopy show that Ni1/3Co1/3Mn1/3(OH)2 possesses an amorphous structure and higher specific surface area (268.5 m2 g−1), which lead to a high initial specific capacitance of 1,403 F g−1 in the potential window of 0–1.5 V. It may be a potential electrode material for future supercapacitor when its cycling stability and rate performance are addressed.