Synthesis of Nickel Tungstate /Nickel-Gallium-Layered Double Hydroxide Nanocomposites as Electrode Material in Supercapacitors

Amorphous NiWO4 nanostructure is suggested to exert a synergistic impact on the efficiency of the NiGa-layered double hydroxide (NiGa-LDH) as a supercapacitor electrode material. NiWO4/ NiGa-LDH nanocomposites were synthesized under mild conditions and at room temperature by using of deionized water as a solvent. The synthesized nanocomposites were characterized by Powder X-ray diffraction (PXRD). Electrochemical tests of nanocomposites were considered by using of cyclic voltammetry (CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy (EIS) techniques. The results reveal that the NiWO4/NiGa-layered double hydroxide nanocomposite has higher specific capacitance in pseudocapacitors.