Structural and magnetic properties of Ca0.5Mg0.5Fe2O4/CeO2/NiFe2O4 nanocomposite for energy storage applications

Spinel ferrite composite materials demonstrate distinctive physiochemical properties that have garnered considerable interest in the scientific community, especially in the electrical field. According to X-ray diffraction (XRD) study, which revealed distinct and powerful diffraction peaks, these nanocomposite are made up of various materials with a highly crystalline structure. Field-emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) were used to investigate the prepared nanocomposite size and shape. The purity of the prepared nanocomposite was validated by X-ray photoelectron spectroscopy (XPS) analysis, which revealed the chemical states of the elements present (Ca, Mg, Ce, Ni, Fe, and O). Using a vibrating sample magnetometer (VSM), the material's magnetic characteristics were evaluated. The magnetic saturation value (Ms) at 300 K was found to be 6.51 emug(-1). Additionally, three electrochemical workstations were used to assess the electrochemical characteristics of the Ca0.5Mg0.5Fe2O4/CeO2/NiFe2O4 nanocomposite. The prepared nano-composite demonstrated outstanding capacity retention of 86% after 5000 cycles in a 6 M KOH solution and an exceptional specific capacity of 400.5 Cg(-1) at a current density of 1 Ag-1. These results highlight the prepared nanocomposite potential as an electrode material for a range of electrochemical energy storage applications and associated uses.

Automated summary

Spinel ferrite composite materials with distinctive physiochemical properties have attracted significant interest in the scientific community, especially in the electrical field. The prepared nanocomposite, composed of various highly crystalline materials, was characterized using XRD, FE-SEM, TEM, XPS, and VSM techniques. The results revealed excellent capacity retention and specific capacity, indicating the potential of this nanocomposite as an electrode material for electrochemical energy storage applications.