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Vol. 36 No. 10 (2024): Vol 36 Issue 10, 2024

Copyright (c) 2024 Thangarasu S

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Flexible PVP/PEO/MnO2 Polymer Nanocomposites based Cathode Material for Asymmetric Supercapacitor

https://doi.org/10.14233/ajchem.2024.32553
W. Maria Therease Ramya
Department of Physics, Government Arts College (Autonomous), Coimbatore-641018, India; Department of Physics, Nirmala College for Women (Autonomous), Coimbatore-641018, India
https://orcid.org/0000-0001-6175-3768
K. Venkatachalam
Department of Physics, Government Arts College (Autonomous), Coimbatore-641018, India
https://orcid.org/0009-0005-1608-8590
A. Murugan
Center for Energy and Environment, Karpagam Academy of Higher Education, Coimbatore-641021, India; Department of Science and Humanities, Karpagam College of Engineering, Coimbatore-641032, India
https://orcid.org/0000-0002-6168-4616
M. Anandha Jothi
Department of Physics, P.S.R. Engineering College, Sivakasi-626140, India
https://orcid.org/0000-0002-2658-9541
S. Thangarasu
Department of Physics, Kalasalingam Academy of Research and Education, Krishnankoil-626126, India
https://orcid.org/0000-0002-4165-4727

Corresponding Author(s) : S. Thangarasu

sthangarasu@gmail.com

Asian Journal of Chemistry, Vol. 36 No. 10 (2024): Vol 36 Issue 10, 2024

Abstract

The solution casting method has been used to design a polymer nanocomposite (PNC) based on polyvinylpyrrolidone (PVP), polyethylene oxide (PEO) and manganese dioxide nanoparticles (MnO2 NPs) at different concentrations. The effective integration of MnO2 NPs in the PVP/PEO blend matrix has been characterized by Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (XRD). An XRD study has demonstrated that adding MnO2 nanoparticles up to 1 wt.% of MnO2 increases the crystallinity of polymer nanocomposites. As the wt.% MnO2 NPs grew from 0.25 to 1 at room temperature, the values of ε' increased from 12.5 to 112.5 at 42 Hz and the value of ε″ increased to 1656 at ambient temperature and then to 20752 at 373 K for 1 wt.% MnO2. Asymmetric supercapacitor (ASC) has been fabricated and its electrochemical performance has been evaluated. All CV curves exhibited a non-rectangle shape even at a high scan rate of 100 mV s–1 for all ASC devices, suggesting the good capacitive behaviours of PNC electrodes.

Keywords

Polymer nanocomposites; PVP/PEO; Electrode; Asymmetric supercapacitor; charge-discharge
Ramya, W. M. T., Venkatachalam, K., Murugan, A., Jothi, M. A., & Thangarasu, S. (2024). Flexible PVP/PEO/MnO2 Polymer Nanocomposites based Cathode Material for Asymmetric Supercapacitor. Asian Journal of Chemistry, 36(10), 2431–2442. https://doi.org/10.14233/ajchem.2024.32553
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