Composite polymer electrolytes are of interest for solid-state electrochemical devices. In this paper we use 7Li solid-state NMR to investigate the cation dynamics of poly(ethylene oxide)- (PEO-) based electrolytes, to which nanoscale ceramics has been added. The fillers give origin to nanocomposites. The NMR linewidth is dominated by Li-H magnetic dipolar interaction. The spin-lattice relaxation is chiefly controlled by electric quadrupolar interaction. The spin dynamics is sensibly influenced by the filler nanoparticles, which act as homogeneizing agents for the polymer.
Mustarelli, P., Capiglia, C., Quartarone, E., Tomasi, C., Ferloni, P., Linati, L. (1999). Cation dynamics and relaxation in nanoscale polymer electrolytes: a 7Li NMR study. PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS, 60(10), 7228-7233 [10.1103/PhysRevB.60.7228].
Cation dynamics and relaxation in nanoscale polymer electrolytes: a 7Li NMR study
Mustarelli, P;
1999
Abstract
Composite polymer electrolytes are of interest for solid-state electrochemical devices. In this paper we use 7Li solid-state NMR to investigate the cation dynamics of poly(ethylene oxide)- (PEO-) based electrolytes, to which nanoscale ceramics has been added. The fillers give origin to nanocomposites. The NMR linewidth is dominated by Li-H magnetic dipolar interaction. The spin-lattice relaxation is chiefly controlled by electric quadrupolar interaction. The spin dynamics is sensibly influenced by the filler nanoparticles, which act as homogeneizing agents for the polymer.
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