Measurement of Li+ Ion Transport Numbers in PEO-LiX Complexes.
Technical rept. no. 16, 15 Jul 85-Jan 88,
MINNESOTA UNIV MINNEAPOLIS CORROSION RESEARCH CENTER
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Lithium ion conducting polymer materials are being intensively investigated in a number of research laboratories because of their potential use as solid electrolytes in high energy density solid state lithium batteries. The most widely used polymer has been based on polyethylene oxide PEO. The conduction mechanism in these polymer electrolytes has generally been assumed to be due to Liion transport from one lone pair site to another along the helical PEO strands. However, recent studies have shown that the Li transport number is less than unity. The transport number for Li ions in PEO-LiX complexes was measured using a potentiostatic polarization technique. The results indicate that the Li ion transport is strongly influenced by the salt concentration and the type of counter ions.
- Inorganic Chemistry