Magnesium chloride-infused chitosan-poly(vinyl alcohol) electrolyte films: A versatile solution for energy storage devices

Document Type

Article

Publication Title

International Journal of Biological Macromolecules

Abstract

The potential of advanced energy storage devices lies in using solid biodegradable polymer electrolytes. This study is focused on a solid blend polymer electrolyte (SBPE) film based on chitosan (CS)–poly(vinyl alcohol) (PVA) blend matrix doped with magnesium chloride (MgCl2) salt via solution casting. The interaction of MgCl2 was verified via X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. The SBPE with 30 wt% MgCl2 exhibited the highest ionic conductivity of 1.24 × 10−6 S cm−1 and an ionic transference number of 0.92. Thermogravimetric analysis (TGA) revealed thermal stability up to 220 °C, and the electrolyte showed favorable electrochemical stability at 3.09 V, as revealed by the I-V analysis. The sample's cyclic voltammetry (CV) curve with the highest conductivity showed distinct oxidation and reduction peaks. The discharge performance of Mg|(CS + PVA+ MgCl2)|Cathode cell with different combinations of cathode materials illustrated the potential of the SBPE for use in magnesium-ion batteries. The CV response indicated non-faradaic behavior for the fabricated supercapacitor, with a specific capacitance of 5.80 F g−1 at 5 mV s−1. The non-flammable electrolyte ensures safe use in battery applications, presenting a sustainable, biodegradable, and cost-effective solution for advanced energy storage systems.

DOI

10.1016/j.ijbiomac.2025.139797

Publication Date

3-1-2025

This document is currently not available here.

Share

COinS