Abstract
Sodium ion conducting polyelectrolytes containing a network of tetraalkoxyaluminates linked by polyethers have been prepared by the reaction of NaAlH2(OCH2CH2OCH3)2 with low molecular weight poly(ethylene glycols) (PEG(300), -(400), -(600), -(1000)). The conductivities of these electrolytes are comparable to those observed for complexes of sodium tetraalkoxyaluminate salts with poly(ethylene oxide)-based host polymers (ca. 10-6 S cm-1 at 60°C) indicating strong Na+-alkoxyaluminate ion pairing. A conductivity enhancement of 110-fold at 40°C is observed when the cation complexing agent cryptand [2.2.2] is added to the polyelectrolyte prepared from PEG(400). A similar conductivity enhancement was observed (140-fold at 40°C) when cryptand is added to salt complexes; the conductivity enhancement is likely due to a decrease in ion pairing in the electrolytes.
Original language | English |
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Pages (from-to) | 418-423 |
Number of pages | 6 |
Journal | Chemistry of Materials |
Volume | 3 |
Issue number | 3 |
Publication status | Published - 1991 |
ASJC Scopus subject areas
- Materials Chemistry
- Materials Science(all)