Ion dynamics in methylcellulose–LiBOB solid polymer electrolytes
Document Type
Article
Publication Date
1-1-2016
Abstract
A polymer electrolyte system comprising methylcellulose (MC) as the host polymer and lithium bis(oxalato) borate (LiBOB) as the lithium ion source has been prepared via the solution cast technique. The electrolyte with the highest conductivity of 2.79 μS cm−1 has a composition of 75 wt% MC–25 wt% LiBOB. The mobile ion concentration (n) in this sample was estimated to be 5.70 × 1020 cm−3. A good correlation between ionic conductivity, dielectric constant, and free ion concentration has been observed. The ratio of mobile ion number density (n) at a particular temperature to the concentration n0 of free ions at T = ∞ (n/n0) and the power law exponents (s) exhibit opposite trends when varied with salt concentration.
Keywords
Solid polymer electrolytes, Ionic conductivity, Ion dynamics, Power law, Dielectric constant
Divisions
PHYSICS
Funders
Financial supports from the University of Malaya (IPPP no. PG112-2013A),Ministry of Higher Education Malaysia (FRGS no. FP053-2014A)
Publication Title
Ionics
Volume
22
Issue
11
Publisher
Springer Verlag