Akademik Veri Yönetim Sistemi
ECS Journal of Solid State Science and Technology, sa.-, ss.1-11, 2026 (Scopus)
Hybrid electrode materials combining transition metal oxides and conductive polymers have attracted significant attention for supercapacitor applications. In this study, cobalt ferrite nanoparticles were synthesized via sol-gel method, and polypyrrole conductive polymer was prepared by chemical oxidative polymerization method. Composite electrodes were fabricated with different CoFe2O4/PPy rations and evaluated in 6 M KOH electrolyte. electrochemical analyses revealed stable operation within potential window 0 f 0–1.4 V and a hybrid charge storage mechanism combining electric double-layer capacitance and pseudocapacitance. Among the investigated samples, the CF6P2 electrode exhibited the best performance, delivering a specific capacitance of 296 mF cm−2 (161 F g−1) at 1 mV s−1, along with an energy density of 50.35 Wh kg−1. In addition, it demonstrated good cycling stability with 95% capacitance retention after 5000 cycles. The enhanced performance is attributed to the synergistic interaction between CoFe2O4 and PPy, which improves electrical conductivity and redox activity.