Journal of Materials Science: Materials in Electronics, cilt.37, sa.3, 2026 (SCI-Expanded, Scopus)
This study focus on the synthesis and electrochemical characterization of spinel ferrite and C3N4 composite materials for energy storage applications. Spinel ferrites such as NiFe2O4, CuFe2O4, and CoFe2O4 were synthesized and combined with C3N4 to improve their performance in supercapacitor applications. The synthesis process involved coating 1 mg of electrode slurry onto nickel foam to exploit its porous structure, which enhances active material retention. Electrochemical measurements revealed that at a current density of 1 A/g, NiFe2O4 exhibited a capacitance value of 238.09 F/g, while the NiFe2O4/C3N4 composite reached 847.61 F/g, demonstrating superior capacitance retention and good cycling stability. Similarly, CuFe2O4 and CuFe2O4/C3N4 composites were characterized, achieving a capacitance of 424.7 F/g and maintaining 92.8% efficiency over 10,000 cycles. CoFe2O4 and CoFe2O4/C3N4 composites displayed even higher performance, with a capacitance of 2291.03 F/g at 1 A/g. The combination of high surface area C3N4 with ferrites enhances active material loading, ion–electron interactions, and charge transfer, leading to improved electrochemical performance. These materials, derived from abundant, non-toxic elements, offer an environmentally friendly, cost-effective solution for energy storage, reducing environmental impact while enhancing performance.