High‐performance symmetric supercapacitor using cost‐efficient iron oxide (Fe3O4) nanoparticles

• DOI: 10.1002/est2.608
• Publication Date: 2024-03-15T02:24:52Z
• Authors: Priyanka Saini; Jitendra Kumar Yadav; Bharti Rani; Anant Prakash Pandey; Ambesh Dixit
• Keywords: Horizontal scan rate; Power density

Abstract We investigated Fe 3 O 4 nanoparticles (NPs) for a symmetric supercapacitor (SSC) under ambient conditions from synthesizing material to device fabrication. The prepared NPs are characterized using different characterization, X‐ray diffraction, Raman and FTIR spectroscopy. electrochemical performance of (SC) is measured in two electrode systems coin‐cell assembly at various scan rates varying 10–100 mV s −1 , cyclic voltammetry measurements −0.8 0.6 V window. based SSC shows an energy density 24.99 Wh kg with the high specific capacitance 91.82 F g 10 rate. At current rate A power reaches 2000 W . exhibits quick charge discharge mechanism stable over 500 galvanostatic chargingdischarging cycles fabricated showed >60% retention even after operating 1000 100 reasonable choice electrodes density, outstanding resilience further shown by stability impedance study exhibiting negligible change elements. potential demonstrated lightening light emitting diode (LED) as practical aspect future applications.