In this study, we developed a novel hybrid electrode nanomaterial composed of Co3O4, CoFe2O4, and reduced graphene oxide (RGO) for electrochemical supercapacitor applications. The hybrid nanocomposite of Co3O4/ RGO/CoFe2O4 was prepared using a modified chemical oxidation process and the phase formation of the composites was evidenced by X-ray diffraction (XRD). The grain size for Co3O4 and CoFe2O4 was estimated as 12 nm and 22 nm. For Co3O4/CoFe2O4 the reduced grain size of 19 nm for CoFe2O4 was observed and further it was reduced with RGO up to 15 nm. The bare Co3O4 exhibited a hexagonal plate-like morphology, whereas the bare CoFe2O4 showed mostly a spherical morphology. The reduced saturation magnetization for the hybrid electrode material due to the non-magnetic fraction of Co3O4 and RGO was observed to be 21 emu/g compared to the bare CoFe2O4 (77 emu/g). The Co3O4/RGO/CoFe2O4 electrode exhibited enriched electroactive sites and enhanced diffusion pathways, achieving a high specific capacity of 235C g - 1 at 5 A g - 1 with excellent durability.. This work highlights the significant charge storage potential of the Co3O4/RGO/CoFe2O4 hybrid, making it a promising candidate for advanced energy storage systems. C1 [Kavinkumar, T.] Karpagam Acad Higher Educ, Ctr Energy & Environm, Dept Phys, Coimbatore 641021, India. [Reddy, N. Ramesh] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea. [Pabba, Durga Prasad] Univ Tecnol Metropolitana, Fac Ingn, Dept Elect, Santiago 7800002, Chile. [Ramadoss, Ananthakumar] Cent Inst Petrochem Engn & Technol, Adv Res Sch Technol & Prod Simulat, Sch Adv Res Petrochem, TVK Ind Estate, Chennai 600032, India. [Rednam, Udayabhaskar] Univ Tecnol Metropolitana, Fac Ingn, Dept Mecan, Santiago, Chile. [Dhanabalan, Shanmuga Sundar] RMIT Univ, Funct Mat & Microsyst Res Grp, Melbourne, Vic 3000, Australia. [Chidhambaram, Natarajan] Rajah Serfoji Govt Coll Autonomous, Dept Phys, Thanjavur 613005, Tamil Nadu, India. [Asaithambi, Perumal] Jimma Univ, Jimma Inst Technol, Fac Civil & Environm Engn, POB 378, Jimma, Ethiopia. [Hevia, Samuel A.] Pontificia Univ Catolica Chile, Inst Fis, Santiago 7820436, Chile. [Hevia, Samuel A.] Pontificia Univ Catolica Chile, Ctr Invest Nanotecnol & Mat Avanzados CIEN UC, Santiago 7820436, Chile. [Thirumurugan, Arun] Univ Atacama, Sede Vallenar, Ave Costanera 105, Vallenar 1612178, Chile. C3 Karpagam Academy of Higher Education (KAHE); Yeungnam University; Universidad Tecnologica Metropolitana; Universidad Tecnologica Metropolitana; Royal Melbourne Institute of Technology (RMIT); Jimma University; Pontificia Universidad Catolica de Chile; Pontificia Universidad Catolica de Chile; Universidad de Atacama