Abstract
Antimony trioxide nanoparticles are synthesized in binder-free, self-standing, and nitrogen and sulfur as heteroatoms doped carbon nanofibers (Sb2O3-NSCFs). Two-step method including electrospinning and heat treatment is utilized to convert antimony species to nano-sized antimony nanoparticles. Structural, morphological, chemical composition, and surface area/pore size analysis of the materials are investigated using a series of analysis. The electrochemical performance of the materials is evaluated using both three- and two-electrode systems in basic electrolyte. The Sb2O3-NSCFs electrode shows a specific capacitance of 354.4 F/g at 1 A/g and the charge storage mechanism is investigated. The constructed coin-cell symmetric supercapacitor (Sb2O3-NSCF//Sb2O3-NSCF) exhibits a specific energy of 9.2 Wh/kg at 300 W/kg and also retains its capacitance of 94.4 % over 10 000 cycles.
Published Version
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