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S. Senthil
Author with expertise in Photocatalytic Materials for Solar Energy Conversion
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Surface active sites enriched CoNiFe-Manganite: an effective electrode for high-performance supercapacitors

W. Galeb et al.Jun 1, 2024
The electrochemical performance of ternary metal oxide electrodes, exhibiting faradic battery-type characteristics, represents a promising and desirable solution for addressing the ongoing energy crisis. In the current investigation, we present the optimized combustion synthesis of Co0.03Ni0.97FeγMn2-γO4 nanoparticles, with varying Fe concentrations (γ=0.01, 0.05, 0.10%), specifically tailored for application in supercapacitors. The Styrofoam-natured (CNMFO:1) exhibited outstanding specific capacitance, reaching 489.12 Fg-1 at a scan rate of 50 mVs-1. Moreover, validation through galvanostatic charge-discharge (GCD) investigations substantiated a notable specific capacitance of 391.41 Fg-1, achieved at a current density of 1Ag-1. In addition, the CNMFO:1 electrode demonstrated remarkable cyclic stability, retaining 83.87% of its initial performance over 6,000 cycles. Similarly, the fabricated asymmetric device of (CNMFO:1||AC) also demonstrated a maximum specific capacitance of 33.86 Fg-1 under a current density of 1Ag-1, which exhibits good energy and power density of 10.52 Wh Kg-1 and 749.34 W Kg-1 respectively. From the overall observation, the CNMFO:1 electrode exhibited notable cyclic stability and electrochemical reversibility. This research recommends that CNMFO:1 nanocomposite have an extraordinary potential for evolution of active electrode materials forthcoming supercapacitors in energy storage system.