Influence of Lithium Bromide on Electrical Properties in Bio-based Polymer Electrolytes

Authors

Ahmad Faizrin Fuzlin, Ionic Materials Team, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Pahang 26300, Malaysia
Bouchta Sahraoui, Université d’Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, ANGERS cedex 49045, France
Ahmad Salihin Samsudin, Ionic Materials Team, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Pahang 26300, MalaysiaFollow

Abstract

This research presents the influence of lithium bromide (LiBr) on the electrical properties of alginate in bio-based polymer electrolytes (BBPEs) system. Bio-based alginate was prepared using the solution casting technique with various LiBr compositions. The ionic conductivity and electrical properties of the prepared BBPEs samples were studied using electrical impedance spectroscopy over a frequency range of 50 Hz–1 MHz. A maximum ionic conductivity of 7.46 × 10−5 S cm-1 was obtained for a sample containing 15 wt. % lithium bromide-doped alginate BBPEs at ambient temperature (303 K). The electrical analysis revealed that the most conductive sample based on alginate-LiBr BBPEs has optimum dielectric constant and loss, which significantly increases as temperature increases. The dielectric properties show that all alginate-LiBr BBPEs are in non-Debye behavior conditions, where no single relaxation occurs in the present system.

Bahasa Abstract

Pengaruh Litium Bromida pada Sifat-sifat Listrik di dalam Elektrolit Polimer Berbasis Hayati. Riset ini menampilkan pengaruh litium bromida (LiBr) pada sifat-sifat listrik alginat di dalam sistem elektrolit polimer berbasis hayati (BBPEs). Alginat berbasis hayati dibuat dengan menggunakan teknik penuangan larutan dengan berbagai komposisi LiBr. Konduktivitas ion dan sifat-sifat listrik dari sampel-sampel BBPEs yang dibuat dikaji dengan menggunakan spektroskopi impedansi listrik pada suatu kisaran frekuensi 50 Hz–1 MHz. Konduktivitas ion maksimum sebesar 7,46 × 10−5 S cm-1 diperoleh untuk suatu sampel yang mengandung 15% berat alginat BBPEs yang didoping dengan litium bromida pada temperatur lingkungan sekitar (303 K). Analisis listrik mengungkapkan bahwa sampel yang paling konduktif berdasarkan pada alginat-LiBr BBPEs memiliki konstanta dielektrik optimum dan kerugian, yang meningkat secara signifikan seiring dengan peningkatan temperatur. Sifat-sifat dielektrik menunjukkan bahwa semua alginat-LiBr BBPEs berada dalam kondisi perilaku non-Debye, di mana di dalam sistem ini tidak terjadi relaksasi sama sekali.

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Recommended Citation

Fuzlin, Ahmad Faizrin; Sahraoui, Bouchta; and Samsudin, Ahmad Salihin (2020) "Influence of Lithium Bromide on Electrical Properties in Bio-based Polymer Electrolytes," Makara Journal of Technology: Vol. 24: Iss. 3, Article 2.
DOI: 10.7454/mst.v24i3.3836
Available at: https://scholarhub.ui.ac.id/mjt/vol24/iss3/2