Development of vertically aligned Ni_xCo_3-xO₄ nanowires for supercapacitors

Nickel-cobalt oxide is a type of transition metal oxide which is extensively accredited as an outstanding electrode material for application in supercapacitors. It outperforms single components in terms of superior specific capacitance and incredible rate capability. In this perspective, porous Ni_xCo_3-xO₄ nanowires have been effectively engineered using a hydrothermal apprroach followed by calcination. The resulting porous Ni_xCo_3-xO₄ nanowire electrodes display significant properties. They achieve a better specific capacitance (1191.4 F/g) at 1 A/g with superior cycling stability. Interestingly, the NF does not only act as 3D macroporous conductive current collector but also as a source of Ni for the formation of Ni_xCo_3-xO₄ nanowire. These exceptional properties position porous Ni_xCo_3-xO₄ nanowires as a highly capable prospect for energy storage applications. © 2023 The Korean Society of Industrial and Engineering Chemistry.