INVESTIGATION OF IONIC-CONDUCTIVITY OF POLYMERIC ELECTROLYTES BASED ON POLY(ETHER URETHANE) NETWORKS USING POSITRON PROBE

Authors
PENG ZL WANG B LI SQ WANG SJ LIU H XIE HQ
Citation
Zl. Peng et al., INVESTIGATION OF IONIC-CONDUCTIVITY OF POLYMERIC ELECTROLYTES BASED ON POLY(ETHER URETHANE) NETWORKS USING POSITRON PROBE, Physics letters. A, 194(3), 1994, pp. 228-234
Citations number
20
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
194
Issue
3
Year of publication
1994
Pages
228 - 234
Database
ISI
SICI code
0375-9601(1994)194:3<228:IOIOPE>2.0.ZU;2-0
Abstract
Positron-lifetime measurements have been made for poly(ether urethane) undoped and doped with [LiClO4]/[Unit] = 0.05 in the temperature rang e of 120-340 K. The measured lifetime spectra were resolved into three components. The lifetime and the intensity of orthopositronium were u sed to evaluate the amount of the free volume in poly(ether urethane). It was found that the variation of ionic conductivity with temperatur e and salt concentration can be rationalised in terms of free volume c onsideration.