STUDY OF THE IONIC TRANSPORT IN POLYMER ELECTROLYTE USING POSITRON LIFETIME DISTRIBUTION METHOD

Authors
PENG ZL ITOH Y LI SQ WANG SJ
Citation
Zl. Peng et al., STUDY OF THE IONIC TRANSPORT IN POLYMER ELECTROLYTE USING POSITRON LIFETIME DISTRIBUTION METHOD, Applied physics A: Materials science & processing, 63(3), 1996, pp. 267-270
Citations number
19
Categorie Soggetti
Physics, Applied
Journal title
Applied physics A: Materials science & processing → ACNP
ISSN journal
09478396
Volume
63
Issue
3
Year of publication
1996
Pages
267 - 270
Database
ISI
SICI code
0947-8396(1996)63:3<267:SOTITI>2.0.ZU;2-P
Abstract
Positron annihilation spectroscopy has been applied to measure the fre e-volume hole distribution in poly(ether urethane) as a function of te mperature. The hole radius distribution determined from orthopositroni um lifetime distribution is found to shift to a larger values with inc reasing temperature. This result, combined with the variation of ionic conductivity, suggests that carrier ions do not migrate naked but are bound to polymer segments through ion-dipole interaction forces, and the ion migration is controlled primarily by segmental motion of the p olymer.