✦ LIBER ✦

A novel polymer electrolyte based on polydioxolane polyurethane with Na+ single-ionic conductivity

✍ Scribed by Lei Wang; Bing Yang; Xin-Ling Wang; Xiao-Zhen Tang

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 217 KB
Volume: 71
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19990307)71:10<1711::aid-app18>3.0.co;2-y

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✦ Synopsis

A series of novel polyurethane ionomers with polydioxolane (PDXL) as soft segment was prepared and characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, and dynamic mechanical analysis. The ionomers obtained were Na ϩ single-ionic conductors. Their ionic conductivity and water absorption were tested. At medium temperature (Ͼ 75°C), the conductivity of ϳ 10 Ϫ5 s cm Ϫ1 was reached. The temperature dependence of conductivity could not be well expressed by both Arrhenius and VTF equations. When ionization level was fixed, the conductivity increased as the Mn of PDXL decreased. We also discussed the effect of ionization level on water absorption.

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