Investigating the feasibility of NiO@g-C₃N₄ as an electrode material for Zinc-ion batteries

Zinc-ion batteries (ZIBs) have gained widespread attention among the rechargeable battery system owing to the multivalent-ion transfer during electrochemical cycling. Ni based materials have received much interest as cathode materials, due to their easy preparation and high energy density. However, the intrinsic low electronic conductivity hindered their practical application. In the present study, NiO@g-C₃N₄ was synthsized via. facile sol-gel method and its electrochemical performance for ZIBs was investigated and reported. The phase formation was investigated using X-ray diffraction (XRD) and its feasibility to utilize as cathode materials for ZIBs was studied using Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). CV profiles and EIS plots indicated that the g-C₃N₄ greatly enhanced the conductivity of NiO and the obtained results suggest that NiO has been utilized as a promising candidate for ZIBs.