Abstract
Multinuclear solid-state nuclear magnetic resonance spectroscopy was used in combination with Mossbauer spectroscopy and synchrotron diffraction to investigate the local and long-range structure as well as the Li-ion dynamics in a Li10SnP2S12-based composite. Although two additional phases could be detected (Li7PS6 and Li4SnS4), the Li ion dynamics turn out to be very fast with a Li diffusion coefficient of 1.6 × 10–12 m2/s, a Li+ ion conductivity of ∼2 mS/cm (both at 303 K), and a small activation barrier of 0.13 eV for single Li+ ion jumps.
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