Cation dynamics and relaxation in nanoscale polymer electrolytes: A Li-7 NMR study

Authors
Mustarelli, P Capiglia, C Quartarone, E Tomasi, C Ferloni, P Linati, L
Citation
P. Mustarelli et al., Cation dynamics and relaxation in nanoscale polymer electrolytes: A Li-7 NMR study, PHYS REV B, 60(10), 1999, pp. 7228-7233
Citations number
31
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
10
Year of publication
1999
Pages
7228 - 7233
Database
ISI
SICI code
0163-1829(19990901)60:10<7228:CDARIN>2.0.ZU;2-A
Abstract
Composite polymer electrolytes are of interest for solid-state electrochemi cal devices. In this paper we use Li-7 solid-state NMR to investigate the c ation dynamics of poly(ethylene oxide)- (PEO-) based electrolytes, to which nanoscale ceramics has been added. The fillers give origin to nanocomposit es. The NMR linewidth is dominated by LI-H magnetic dipolar interaction. Th e spin-lattice relaxation is chiefly controlled by electric quadrupolar int eraction. The spin dynamics is sensibly influenced by the filler nanopartic les, which act as homogeneizing agents for the polymer. [S0163-1829(99)0533 3-3].