Biopolymeric electrolyte based on glycerolized methyl cellulose with NH4Br as proton source and potential application in EDLC
Document Type
Article
Publication Date
1-1-2018
Abstract
In the present work, biopolymer electrolyte films based on MC doped with NH4Br salt and plasticized with glycerol were prepared by solution casting method. Fourier transform infrared (FTIR) spectroscopy analysis confirms the interaction between MC, NH4Br, and glycerol. X-ray diffraction (XRD) explains that the enhancement of conductivity is affected by the degree of crystallinity. This result is verified by field emission scanning electron microscopy (FESEM). For unplasticized system, sample containing 25 wt% of NH4Br possesses the highest ionic conductivity of (1.89 ± 0.05) × 10−4 S cm−1. The addition of 30 wt% glycerol increases the conductivity value up to (1.67 ± 0.04) × 10−3 S cm−1. The conduction mechanism was best presented by the correlated barrier hopping (CBH) model. The linear sweep voltammetry (LSV) and cyclic voltammetry (CV) result confirms the suitability of the highest conducting electrolyte to be employed in the fabrication of electrochemical double layer capacitor (EDLC).
Keywords
Biopolymer electrolytes, Conduction mechanism, Conductivity, EDLC, Methyl cellulose
Divisions
physics,PHYSICS,InstituteofBiologicalSciences
Funders
University of Malaya and Ministry of Higher Education: (FP010-2015A), PPP grant (PG078-2015B), and RP010B-13AFR
Publication Title
Ionics
Volume
24
Issue
6
Publisher
Springer Verlag (Germany)