Unveiling frequency-dependent dielectric behavior of cellulose-based polymer electrolyte at various temperature and salt concentration

Christin Rina Ratri, Qolby Sabrina, Titik Lestariningsih, Adam Febriyanto Nugraha, Sotya Astutiningsih, Mochamad Chalid

Research output: Contribution to journalArticlepeer-review

Abstract

Dielectric behavior of cellulose-based polymer electrolyte was studied at various temperature and salt concentration. A polymer electrolyte membrane based on cellulose acetate (CA) as the polymer host and LiClO4 as the dopant salt was fabricated using the solution casting technique. The dopant salt concentration was varied as 0.3, 0.5, 0.67, and 1M. Dielectric relaxation spectroscopy characterization were performed using potentiostat at frequency ranging from 0.1 Hz to 1 MHz. Measurements were performed by sandwiching the membrane between stainless steel plates. The ionic conductivity was then calculated based on the Cole–Cole plot obtained from the impedance measurement. It was found that sample 1 M had the highest ionic conductivity at high frequencies. However, the frequency-dependent conductance plot showed that the ionic conductivity of the 1 M sample significantly decreased at low frequencies, i.e. from 3.41×10-5 S/cm at 1 MHz to 1.9×10-8 S/cm at 0.1 Hz.

Original languageEnglish
Pages (from-to)741-748
Number of pages8
JournalInternational Journal of Renewable Energy Development
Volume12
Issue number4
DOIs
Publication statusPublished - Jul 2023

Keywords

  • cellulose acetate
  • dielectric properties
  • ionic conductivity
  • polymer electrolyte

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