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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0098

    • Keywords

       

      Chemical co-precipitation; copper manganese oxide; MWCNT; PEDOT:PSS; supercapacitor.

    • Abstract

       

      In this study, the spinel copper manganese oxide (CMO) nanocrystals were synthesized by simple chemical co-precipitation method and was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy (TEM). The morphology of the material found from TEM is to be spherical in shape with the crystallite size of 3.51 nm. The electrochemical characterizations of the CMO were performed by cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy. The specific capacitance of CMO was found to be 280 F g$^{-1}$ at a current density of 1 A g$^{-1}$. To enhance its capacitance value, it was doped with multi-walled carbon nanotube and poly(3,4-ethylenedioxythiophene) polystyrene sulphonate (PEDOT:PSS) and their electrochemical characterizations were recorded and compared with CMO. Doped material (CMO/MWCNT/PEDOT:PSS) exhibits a high specific capacitance of 1087 F g$^{-1}$ at current density of 1 A g$^{-1}$ with a good rate performance and retained an excellent electrochemical stability of 104% capacitance retention and coulombic efficiency of 101% over 10,000 cycles at a current density of 5 A g$^{-1}$. This work recommends an idea for such advanced electrode material for efficient supercapacitors.

    • Author Affiliations

       

      KANAGARAJAN KIRUTHIKA1 VELAYUTHAM RENUGA1 VEMBU SURYANARAYANAN2

      1. PG and Research Department of Chemistry, National College (Autonomous), Tiruchirappalli 620001, India
      2. Electroorganic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India

    • Dates

       
      Published
      12 May 2023
      Manuscript received
      14 October 2022
      Accepted
      10 January 2023
      Final version published online
      12 May 2023

  • Bulletin of Materials Science | News

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      Posted on October 12, 2020

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    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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