Pressure dependence of the ionic conductivity of poly(oxyethylene)–LiTFSI polymer electrolytes

Variations in ionic conductivity of poly(oxyethylene)–LiTFSI complexes with pressure have been studied. In the 1–5000 bar range, the ionic conductivity decreases by about two orders of magnitude. The apparent activation volume Δ V*, experimentally determined by the relationship (∂ ln σ)/∂P) T=−( ΔV...

Full description

Saved in:
Bibliographic Details
Published in:Solid state ionics 1998-07, Vol.110 (1), p.15-20
Main Authors: Alloin, Fannie, Bolton, Joanna, Louis Souquet, Jean, Duclot, Michel
Format: Article
Language:English
Subjects:
Activation volume
Applied sciences
Chemical Sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Ionic conductivity
Isostatic pressure
Organic polymers
Physicochemistry of polymers
Properties and characterization
Salt polymer complexes
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Variations in ionic conductivity of poly(oxyethylene)–LiTFSI complexes with pressure have been studied. In the 1–5000 bar range, the ionic conductivity decreases by about two orders of magnitude. The apparent activation volume Δ V*, experimentally determined by the relationship (∂ ln σ)/∂P) T=−( ΔV ∗)/(RT) , is close to 25 cm 3 mol − 1 and does not significantly varies with LiTFSI concentration or polymer cross-linking. The ionic conductivity variations with pressure is interpreted by a decrease of the available free volume reducing the charge carrier mobility.
ISSN:0167-2738
1872-7689
DOI:10.1016/S0167-2738(98)00123-4