Green Synthesis of CNTs/Ni(OH)2 Nanostructures for Electrochemical Supercapacitors

•Synthesis of CNTs/Ni(OH)2 hybrid structure via low temperature process as electrode for supercapacitor.•The specific capacitance is 912 F/g at a scan rate of 10 m Vs−1.•The electrode retained 84% of the initial specific capacitance after 1000 cycles.