Accumulation of Charge Mechanisms in Electrochemical Systems Based on Carbon and Nickel Tungstate

In this work, the porous structure of a carbon material and a crystalline structure of NiWO 4 have been investigated. The electrochemical performance of symmetric and hybrid asymmetric supercapacitors was investigated by cyclic voltammetry and galvanostatic cycling methods. The processes occur mainly at the electrode-electrolyte interface have been analyzed. It was determined that at discharge currents of 1 and 5 mA, the specific capacitance value for the hybrid asymmetric supercapacitors twice exceeds the given value for the symmetric ones under the same conditions.