Investigations into the electrochemical characteristics of nickel oxide hydroxide/multi-walled carbon nanotube nanocomposites for use as supercapacitor electrodes

We have fabricated supercapacitor electrodes consisting of nickel oxide hydroxide (NiOOH) and multiwalled

carbon nanotubes (MWNTs). The presence of the carbon nanotubes provides a conducting network

and also increases the specific surface area. A specific capacitance of 2436 F g−1 and a specific surface area

of 274.32 m2 g−1 were obtained at a scan rate of 10 mV s−1 on the 50 wt.% of MWNTs. Energy density and

power density were 82.8 W h kg−1 and 8.5 kW kg−1, respectively.