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crystalline ion conductors; solid state NMR; paddle-wheel mechanism; 2D exchange NMR
Abstract:
In this contribution we present studies on the mechanism of ion
transport in crystalline solid electrolytes employing a range of
different solid state nuclear magnetic resonance (NMR) experiments. The
first part is devoted to the elucidation of a possible correlation of
cation transport and anion reorientation in the dynamically disordered
rotor phases of alkali trifluoromethane sulfonates MCF3SO3 (M = Li, Na)
employing Li-7, C-13, O-17 and Na-23 NMR line shape analysis, whereas
the second part focuses on the tracking of cation diffusion pathways in
the hexaoxometalate Li7TaO6 utilizing Li-6 1D and 2D exchange MAS NMR
approaches. (c) 2006 Elsevier B.V All rights reserved.
