Novel approach for the utilization of ionic liquid-based cellulose derivative biosourced polymer electrolytes in safe sodium-ion batteries
Document Type
Article
Publication Date
9-1-2021
Abstract
Carboxymethyl cellulose (CMC) derived from kenaf bast fiber complexed with sodium acetate and integrated with ionic liquid 1-butyl-3-methylimidazolium chloride, Bmim]Cl, was investigated as potential biosourced polymer electrolyte. The highest ionic conductivity of (4.54 +/- 1.2) x 10(-3) S cm(-1) was obtained after introducing 30 wt% Bmim]Cl with respect to the weight of CMC. Infrared spectroscopic analysis revealed the interaction of the polymer host with the sodium salt and ionic liquid. Ion transport analysis showed that charge transport in the biopolymer electrolyte system occurred predominately with ion and sodium ion transference numbers of 0.129. Linear sweep voltammetry result showed that electrochemical stability reached similar to 2.9 V, showing that the biopolymer electrolyte is suitable for practical application in electrochemical devices. Sodium battery configurations of Na/CH3COONa-30 wt% Bmim]Cl/I-2 + C + electrolyte were fabricated and demonstrated an initial discharge capacity of 1.5 mAh for 200 h with 1.6 V open circuit potential.
Keywords
Battery, Biosources, Cellulose, Electrochemical, Energy storage
Divisions
foundation
Funders
Centre of Research and Instrument Management, Universiti Kebangsaan Malaysia (MI-2019-018),Centre of Research and Instrument Management, Universiti Kebangsaan Malaysia (DIP-2015-028)
Publication Title
Polymer Bulletin
Volume
78
Issue
9
Publisher
Springer Verlag (Germany)
Publisher Location
ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES