Application of Ni-doped Zn-based metal organic framework as an electrode material for supercapacitors

Metal-organic frameworks (MOFs) have attracted intense attention due to their various application in the energy storage and conversion field. Herein, Ni-doped TMU-22 was synthesized through sonochemical method as an electrode material for supercapacitor. The supercapacitive behavior of synthesized material was evaluated using cyclic voltammetry (CV) and galvanostatic charge/discharge measurements in 0.5M K2SO4 as electrolyte. The Ni-doped TMU-22 exhibited outstanding specific capacitance of 25.28 F.g-1 at a discharge current density of 1 A.g-1. The specific capacitance retention is about 80.22 % after 300 cycles. We expected that this work would open up a new door for MOF applications in the supercapacitors electrode material.