NMR studies of cation transport in the crystalline ion conductors MCF3SO3 (M = Li, Na) and Li7TaO6

• 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.

Nyckelord

crystalline ion conductors

solid state NMR

paddle-wheel mechanism

2D exchange NMR

polymer electrolytes

anion reorientation

phase-transition

high-temperature

solid-solutions

paddle-wheel

conductivity

relaxation

mobility

trifluoromethanesulfonate

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