Improvement of Ionic Conductivity in Plasticized PEO‐Based Solid Polymer Electrolytes
- 1 December 1993
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 140 (12) , 3409-3412
- https://doi.org/10.1149/1.2221103
Abstract
The ionic conductivity of a solid polymer electrolyte based on a lithium salt dissolved in a poly(ethylene oxide) (PEO) host was significantly improved with the use of plasticizing agents. Either a plasticizing salt, solvent, or combinations of both were incorporated into free‐standing solution‐cast films of . The greatest enhancement of conductivity was observed when a plasticizing salt and solvent (diethyl phthalate) were combined, with the most notable improvement occurring below the melting temperature of PEO (≈66°C). Conductivity increased from at 20°C to with the addition of both plasticizers.Keywords
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