(86n) Electrochemical Performance of Hybrid Ferrite/(Mn, Ti)-Oxide Electrode for Asymmetric Supercapacitor

Perovskite (ABX₃) materials have received significant attention for supercapacitors or asymmetric supercapacitors (ASCs) due to their high energy storage capacity. Ferrite materials have also been investigated as electrode materials for ASCs due to their high electrical conductivity, SSA, and excellent thermal stability. In this study, sol-gel derived ferrite materials such as NiFe₂O₄, ZnFe₂O₄, and MnFe₂O₄ were individually mixed at different weight ratio with the precursor salts of Mn and Ti, and sonicated in ethanol. To this dispersion, deionized (DI) water containing HCl was added to accomplish the gel formation. The gel was aged and calcined at 500-1200°C to accomplish the (Mn,Ti)-oxide phase formation. Hybrid ferrite/(Mn,Ti)-oxide electrode material was fully characterized by Brunauer-Emmett-Teller (BET) surface area analyzer, and powdered X-ray diffraction (XRD). The electrochemical performance of hybrid material was characterized using the 3-cell setup. ASCs were fabricated using the hybrid electrode materials with hydrothermal liquefaction (HTL)-derived porous carbon from corn stover. The performance of ASCs was measured to determine their specific capacitance and cyclic stability. Results obtained from the experimental findings will be presented.