Investigation of Antimonides for Supercapacitor Application

Abstract

Renewable sources namely wind, geothermal, ocean and solar energy harvest, newlineno or little carbon dioxide which are crucial in solving environmental and energy issues. newlineThere is a massive increase in research concerning principle transformation and newlinerejuvenated momentum toward sustainable, socioeconomic and self-sufficient energy newlinesources are in the developing course. Amidst many energy harvesting systems, the storage newlineof energy acquired significant research into redox flow batteries, sodium-ion, lithium-ion newlineand finally supercapacitors. Surprisingly supercapacitors with long life spans, high power newlinedensities and exceptional thermal stability laid the ground for the future technologies. The newlineantimony-based material was chosen for the extensive study due to the high theoretical newlinestorage capacity and appropriate working voltage. The experimental studies verified newlineexceptional cyclic stability for antimony-based materials. newlineIn the first work, FeSb material was prepared through the physical method newlinevacuum melting technique. It has displayed a specific capacity of 169.5 F/g at the current newlinedensity 2 A/g with an outstanding capacitance retention of 100% for 1000 cycles. newlineMaterial s crystal structure, DOS and band structure were also examined using the DFT newlinestudy. The formation of pure single-phase FeSb remains the sole aim of the work and the newlineresults were achieved through the inference from the calculated Fe-Sb phase diagram and newlinealtering the stoichiometry through the creation of a 10 % deficiency in the antimony newline(FeSb0.9) newline