Chitosan based biopolymer electrolyte reinforced with V2O5 filler for magnesium batteries: an inclusive investigation

In the present work, the signi cance of adding MnO 2 ller towards development of biopolymer electrolyte, chitosan with enhanced ionic conductivity has been reported. The complexation that has taken place with the inclusion of MgNO 3 .6H 2 O salt and MnO 2 ller in the chitosan matrix has been investigated through the Fourier Transform Infra Red (FTIR) spectra analysis. Further, the transport parameter values such as number of charge carrier densities (n), mobility (µ) and diffusion coe cient (D) have been calculated from the deconvoluted FTIR spectra. X-Ray Diffraction (XRD) and Differential Scanning Calorimetric (DSC) examination revealed that the inclusion of ller signi cantly reduced the degree of crystallinity and the glass transition T g values respectively. These ndings show that the inclusion of ller increases the segmental mobility of the polymer chains, allowing for faster ion transport. The conduction properties of the prepared electrolytes has been determined using Alternating Current (AC) impedance analysis, with the electrolyte containing 60 wt% magnesium salt (2.6 ± 0.08) х 10 − 4 S cm − 1 achieving the maximum ionic conductivity value at room temperature (303K). This value is further increased by one order of magnitude with the addition of MnO 2 ller into the polymer matrix (1.25 ± 0.09) х 10 − 3 S cm − 1 . To elucidate the individual contributions of ions and electrons in the conduction process, the Direct Current (DC) polarisation method has been used to determine the transference number (t ion ) of the produced electrolytes. The ller added chitosan polymer exhibits an extended electrochemical stability window, 1.7 V as determined by Linear Sweep Voltammetry (LSV).

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Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Helen

Selvin

Lakshmi³

et al. 2022

Polym. Bull.

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Quasi-solid-state plasticized chitosan biopolymer electrolyte with enhanced Mg2+ ion mobility for next-generation Mg ion battery

Helen,

Selvin,

Sakthivel

2024

J Solid State Electrochem

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Natural polymer-based electrolytes for energy storage devices—an overview

Thrisha K,

Saratha R

2023

Ionics

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Chitosan based biopolymer electrolyte reinforced with V2O5 filler for magnesium batteries: an inclusive investigation

Cited by 4 publications

References 49 publications

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Amelioration of ionic conductivity (303 K) with the supplement of MnO2 filler in the chitosan biopolymer electrolyte for magnesium batteries

Quasi-solid-state plasticized chitosan biopolymer electrolyte with enhanced Mg2+ ion mobility for next-generation Mg ion battery

Natural polymer-based electrolytes for energy storage devices—an overview

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