Improving super capacitive properties of copper ferrite nanoparticles with metal Mg Ni and Zn doping

Abstract

The present research work is a study about the enrichment of newlinesupercapacitive features on inclusion of magnesium, nickel and zinc atoms newlineinstead of copper atom in copper ferrite nanoparticles. At different newlineconcentrations, various nanoparticles such as CF (copper ferrite), MCF newline(magnesium-doped copper ferrite), NCF (nickel-doped copper ferrite) and ZCF newline(zinc-amalgamated copper ferrite) have been synthesized in the nanometer newlinerange using a facile microwave combustion method. The diffraction patterns of newlineCF, MCF, NCF and ZCF have been recorded in order to study their crystalline newlinenature. The XRD patterns reveal that they are associated to the cubic crystal newlinestructure. The FTIR spectra of the prepared nanoparticle samples were also newlinerecorded and the peak at 575 cm-1 is attributed to stretching vibrations of newlineFe3+ - O2. The surface morphological investigations were carried out using SEM newlineattached with EDX. The SEM images exhibit nano-sized particle structure with newlineagglomeration. The EDX results disclose that the percentage of metal and Cu newlineobtained matched well with the stoichiometric calculation. An electrochemical newlineworkstation was used to perform all the electrochemical measurements using a newline3-electrode setup. The prepared samples (CF, MCF, NCF and ZCF) were used newlineas working electrodes in association with a platinum wire and a silver newline(Ag)/silver chloride (AgCl) as counter and reference electrodes, respectively. newlineThe electrochemical analysis of electrodes was done using cyclic voltammetry, newlinecharge-discharge measurements, and impedance measurements in 2 M KOH newlineliquid electrolyte. The estimated specific capacitance values were measured to newlinebe 620, 635,737.5, 537.5,1050, 1250, 778, and 538 Fg-1 for CF, MCF1, MCF3, newlineMCF5, NCF3, ZCF1, ZCF3, ZCF5, respectively. The samples MCF3, NCF3 newlineand ZCF1 were identified as better electrode materials based on the above newlineresults. newline