Electrochemical and Ion Transport Studies of Li+ Ion-Conducting MC-Based Biopolymer Blend Electrolytes

Elham M A Dannoun; Shujahadeen B Aziz; Mohamad A Brza; Sameerah I Al-Saeedi; Muaffaq M Nofal; Kuldeep Mishra; Ranjdar M Abdullah; Wrya O Karim; Jihad M Hadi

doi:10.3390/ijms23169152

Electrochemical and Ion Transport Studies of Li⁺ Ion-Conducting MC-Based Biopolymer Blend Electrolytes

Int J Mol Sci. 2022 Aug 15;23(16):9152. doi: 10.3390/ijms23169152.

Authors

Elham M A Dannoun¹, Shujahadeen B Aziz^{2

3}, Mohamad A Brza⁴, Sameerah I Al-Saeedi⁵, Muaffaq M Nofal⁶, Kuldeep Mishra⁷, Ranjdar M Abdullah², Wrya O Karim⁸, Jihad M Hadi⁹

Affiliations

¹ Associate Chair of the Department of Mathematics and Science, Woman Campus, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi Arabia.
² Hameed Majid Advanced Polymeric Materials Research Lab., Physics Department, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq.
³ The Development Center for Research and Training (DCRT), University of Human Development, Sulaimani 46001, Iraq.
⁴ Medical Physics Department, College of Medicals & Applied Science, Charmo University, Chamchamal, Sulaimani 46023, Iraq.
⁵ Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
⁶ Department of Mathematics and Science, Prince Sultan University, P.O. Box 66833, Riyadh 11586, Saudi Arabia.
⁷ Department of Physics, Jaypee University, Anupshahar 203390, Uttar Pradesh, India.
⁸ Department of Chemistry, College of Science, University of Sulaimani, Qlyasan Street, Kurdistan Regional Government, Sulaimani 46001, Iraq.
⁹ Nursing Department, College of Nursing, University of Human Development, Kurdistan Regional Government, Sulaimani 46001, Iraq.

Abstract

A facile methodology system for synthesizing solid polymer electrolytes (SPEs) based on methylcellulose, dextran, lithium perchlorate (as ionic sources), and glycerol (such as a plasticizer) (MC:Dex:LiClO₄:Glycerol) has been implemented. Fourier transform infrared spectroscopy (FTIR) and two imperative electrochemical techniques, including linear sweep voltammetry (LSV) and electrical impedance spectroscopy (EIS), were performed on the films to analyze their structural and electrical properties. The FTIR spectra verify the interactions between the electrolyte components. Following this, a further calculation was performed to determine free ions (FI) and contact ion pairs (CIP) from the deconvolution of the peak associated with the anion. It is verified that the electrolyte containing the highest amount of glycerol plasticizer (MDLG3) has shown a maximum conductivity of 1.45 × 10^-3 S cm^-1. Moreover, for other transport parameters, the mobility (μ), number density (n), and diffusion coefficient (D) of ions were enhanced effectively. The transference number measurement (TNM) of electrons (t_el) was 0.024 and 0.976 corresponding to ions (t_ion). One of the prepared samples (MDLG3) had 3.0 V as the voltage stability of the electrolyte.

Keywords: EIS and FTIR; LSV and TNM measurements; biopolymer blend electrolyte; complex permittivity; ion transport parameters.

MeSH terms

Biopolymers / chemistry
Electrolytes / chemistry
Glycerol*
Ion Transport
Ions
Lithium
Plasticizers*

Substances

Biopolymers
Electrolytes
Ions
Plasticizers
Lithium
Glycerol

Grants and funding

This research received no external funding.