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GEL POLYMER ELECTROLYTES ELABORATED BY UV-IRRADIATION FOR THE ECO-DESIGN OF LI-ION BATTERIES

  • Ana Barrera - Unité Matériaux et Transformations (UMET), France
  • Corinne Binet - Unité Matériaux et Transformations (UMET), France
  • Imene Benabela - Laboratoire Physico-Chimique des Matériaux, Catalyse et Environnement (LPCMCE), Université des Sciences et de la Technologie Mohammed Boudiaf d’Oran (USTO-MB), Algeria
  • Philippe Supiot - Unité Matériaux et Transformations (UMET), France
  • Corinne Foissac - Unité Matériaux et Transformations (UMET), France
  • Ulrich Maschke - Unité Matériaux et Transformations (UMET), France

DOI 10.31025/2611-4135/2024.19406

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Copyright: © 2024 CISA Publisher

Abstract

This study examines the chemical, thermal, and dielectric properties of gel polymer electrolytes (GPEs) based on poly(ethylene glycol) diacrylate (PEGDA, average Mn=700 g/mol). GPEs were synthesized via a single-step UV-irradiation process, whereby PEGDA was mixed with varying concentrations of a commercial liquid electrolyte (1 M LiPF6 in EC/DEC 50/50 v/v) ranging from 0 to 60 wt%. The results of the infrared analysis indicated that the liquid electrolyte was successfully immobilized within the polymeric matrix. The thermally stable nature of the synthesized GPEs was confirmed across a wide temperature range (-40 to 90°C) through thermal analysis. Furthermore, dielectric measurements were conducted in a frequency range of 0.1 to 106 Hz, with a sinusoidal AC amplitude of 10 mV, from 20 to 100°C. The results demonstrated that the ionic conductivity of GPEs increased with the addition of liquid electrolyte. The GPEs prepared with 60 wt% liquid electrolyte exhibited a conductivity value of approximately 6.6x10-3 S/m at 30°C, which is consistent with the conductivity range reported in the literature.

Keywords

Editorial History

  • Received: 29 May 2024
  • Accepted: 13 Jul 2024
  • Available online: 07 Sep 2024

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