Synthesis and enhanced electrochemical supercapacitor properties of Ag-MnO2-polyaniline nanocomposite electrodes

Jongmin Kim, Haeri Ju, Akbar I. Inamdar, Yongcheol Jo, J. Han, Hyungsang Kim, Hyunsik Im

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

Ternary Ag/MnO2/PANI (silver/manganese oxide/polyaniline) nanocomposite thin films were synthesized for supercapacitor applications using a new synthetic strategy including a pulsed potential electrodeposition technique. The agglomerated nanoscale-vermicular-like structure of the pure PANI is converted into more uniform vermicular morphology containing Ag and MnO2. The electrochemical supercapacitor properties of the ternary nanocomposite films are investigated in a 0.5M LiClO4+PC electrolyte. The current density of the Ag/MnO2/PANI nanocomposite film obtained from the CV (cyclic voltammogram) is much higher than that of the pure PANI. Furthermore, the specific capacitance of the ternary Ag/MnO2/PANI nanocomposite is calculated to be 621F/g and 800F/g from CV and CD (charge-discharge) measurements, respectively. The cycling stability of the ternary nanocomposites (as high as ~83%) is significantly enhanced compared to that of a pure PANI (~66%) sample.

Original languageEnglish
Pages (from-to)473-477
Number of pages5
JournalEnergy
Volume70
DOIs
StatePublished - 1 Jun 2014

Keywords

  • Charge-discharge measurements
  • Cyclic voltammetry
  • Electrochemical supercapacitor
  • Silver/manganese oxide/polyaniline nanocomposite

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