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Single-crystal X-ray structure analysis of the superionic conductor Li10GeP2S12

MPG-Autoren
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Köhler,  J.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Lotsch,  B. V.
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Zitation

Kuhn, A., Köhler, J., & Lotsch, B. V. (2013). Single-crystal X-ray structure analysis of the superionic conductor Li10GeP2S12. Physical Chemistry Chemical Physics, 15(28), 11620-11622.


Zitierlink: https://hdl.handle.net/21.11116/0000-000E-C693-C
Zusammenfassung
Tetragonal Li10GeP2S12 (LGPS) is the best solid Li ion conductor known to date. So far, the structure of the electrolyte was only determined from powder diffraction and Rietveld refinement. Here, we present the first single-crystal structure analysis of the tetragonal LGPS structure. The reported structure is largely verified. However, an additional Li position is clearly identified which might have a significant impact on the Li ion dynamics. All Li positions are partially occupied - a prerequisite for Li superionic conductors - and form a network of interconnected Li diffusion pathways. Therefore, we suggest that Li diffusion in this record solid electrolyte is less anisotropic than previously claimed.