Journal
SOLID STATE IONICS
Volume 203, Issue 1, Pages 18-21Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2011.09.021
Keywords
Polymer electrolyte; Ionic conductivity; Molecular weight dependence
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Funding
- Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy [DE-AC02-05CH11231]
- National Science Foundation
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The ionic conductivity, sigma, of mixtures of poly(ethylene oxide) (PEO) and lithium bis(trifluoromethanesulfone) imide (LiTFSI) was measured as a function of molecular weight of the PEO chains, M. over the range 0.2-5000 kg/mol. Our data are consistent with an expression sigma=sigma(0) + K/M proposed by Shi and Vincent [Solid State Ionics 60 (1993)] where sigma(0) and K are exponential and linear functions of inverse temperature respectively. Explicit expressions for To and K are provided. (C) 2011 Elsevier B.V. All rights reserved.
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