Effect of Zinc Oxide Nanofiller on the Ionic Conductivity of Carboxymethyl Cellulose-Based Solid Polymer Electrolyte
Year: 2025
Type: article
Abstract: The semi-crystalline nature of bio-based solid polymer electrolytes (SPE) can impede ionic mobility, thereby reducing their ionic conductivity. One established method to enhance the ionic conductivity of SPE involves the addition of fillers. In this study, SPE was prepared using a solution casting method, comprising carboxymethyl cellulose (CMC) as the biopolymer host, lithium bis-trifluoromethanesulfonimide (LiTFSI) as the charge carrier, and zinc oxide (ZnO) as the nanofiller. We investigated the impact of ZnO on the electronic and chemical properties of the CMC-LiTFSI SPE through Electrochemical Impedance Spectroscopy (EIS), Fourier Transform Infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD). The highest ionic conductivity of 1.94 x 10 -6 S/cm was achieved with 4 wt.% ZnO. FTIR spectra demonstrated complexation between CMC, LiTFSI salt, and ZnO nanofiller. XRD analysis indicated an improvement in the amorphous nature as ZnO was added to CMC-LiTFSI system, which explained the increase in ionic conductivity. In conclusion, ZnO present a promising choice as a nanofiller to enhance the ionic conductivity a of the CMC-LiTFSI SPE system. Keywords: Solid polymer electrolyte; carboxymethyl cellulose; zinc oxide nanofiller; ionic conductivity
Source: Key engineering materials
DOI: 10.4028/p-4ahvou
Authors: Norsaidatul Amira Azmi, Syuhada Mohd Tahir, Hartini Ahmad Rafaie
Institutions: Universiti Teknologi MARA, Universiti Teknologi MARA System
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4408157608