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Studies on potassium-ion conducting gel polymer electrolytes containing poly(vinylidene fluoride-hexafluoropropylene) polymer, potassium permanganate salt added with different plasticizers.
- Source :
- Ionics; Apr2024, Vol. 30 Issue 4, p2139-2153, 15p
- Publication Year :
- 2024
-
Abstract
- In this work, a comparative study is presented utilizing a K<superscript>+</superscript> conducting gel polymer electrolyte (GPE) system comprising of a poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP) polymer matrix combined with potassium permanganate (KMnO<subscript>4</subscript>) salt and two different plasticizers as a binary combination of ethylene carbonate (EC) + propylene carbonate (PC) and tetraethylene glycol dimethyl ether (TEGDME). The electrolyte with TEGDME solvent shows an ionic conductivity (σ) of 7.01 × 10<superscript>−6</superscript> S cm<superscript>−1</superscript> with hopping of ions as charge transport behavior. The fabricated electrolyte possesses > 98% contribution from the ions, and the electro-chemical stability range is up to 3.2 V. The dielectric analysis shows that the electrolyte with TEGDME solvent possesses a higher value of the dielectric constant, dielectric loss, tangent loss, and dc conductivity, along with a higher free ion number density (N) in comparison to the counter-electrolyte specimens with EC:PC solvent. The thermal studies confirm the gel phase of both electrolytes with negligible weight loss till 100 °C. Polymer-salt complex interactions are confirmed using Fourier transform infrared spectroscopy (FTIR), while X-ray diffraction (XRD) analysis is used to study the variations in crystallinity brought about by the polymer and both electrolyte samples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09477047
- Volume :
- 30
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Ionics
- Publication Type :
- Academic Journal
- Accession number :
- 176497641
- Full Text :
- https://doi.org/10.1007/s11581-024-05405-8