Synthesis, Characterization And Electrochemical Studies Of Zn Doped Mgfe2o4 Qds Via Co-Precipitation Technique

Abstract

In this work, Zn-doped MgFe₂O₄ quantum dots (QDs) were synthesized using a cost-effective co-precipitation method. A thorough characterization was conducted utilizing XRD, FTIR, TEM, SEM, EDX, and XPS techniques. The analyses from XRD and FTIR confirmed the establishment of a well-defined spinel structure, while the XPS spectra validated the existence of Fe 2p, Mg 2p, O 1s, and Zn 2p elements. The TEM analysis demonstrated uniformly distributed quantum dots with an average particle size of 6.23 ± 0.18 nm. The electrochemical properties of the Zn-doped MgFe₂O₄ QDs were assessed through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The material displayed outstanding specific capacitance, favourable rate capability, and strong cycling stability. These results underscore the potential of Zn-doped MgFe₂O₄ QDs as promising electrode materials for high-performance supercapacitor applications.