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MM: Fachverband Metall- und Materialphysik
MM 9: Poster
MM 9.23: Poster
Montag, 17. März 2025, 18:30–20:30, P1
Structure and transport properties of Li3MCl6 superionic conductors — •Ziyan Zhang1, 2, Peter Müller-Buschbaum1, and Anatoliy Senyshyn2 — 1Chair for Functional Materials,School of Natural Sciences, Technical University of Munich,85748 Garching, Germany — 2Heinz Maier-Leibnitz Zentrum, Technical University of Munich, 85748 Garching, Germany
Modern society permanently requires more advanced, better performant, safer, and cost-effective energy storage solutions, where the all-solid-state battery (ASSB) concept based on lithium metal is closest to commercialization. Solid electrolytes are a key component of ASSB, defining its lifetime and performance. Halide-based solid electrolytes Li3MCl6 (M = transition metals, rare-earth metals) are emerging as promising materials for all-solid-state batteries due to their high ionic conductivity, electrochemical stability, and compatibility with lithium metal anodes. The current study deals with the systematic characterization of Li3MCl6 solid conductors with M = In, Zr, and Ti transition elements. The focus will be put on the optimization of synthesis routes (between solvent-mediated and mechanochemistry), composition control as well as enhancement of ionic transport. Comprehensive structural characterization, encompassing lab X-ray diffraction (XRD) with Rietveld refinement combined with differential bond-valence estimates of lithium diffusion pathways and differential scanning calorimetry, is performed to reveal the crystallographic details, microstructure, and lithium-ion dynamics.
Keywords: All-solid-state batteries; Lithium ionic conductivity; Halide-based solid electrolytes; Synthesis optimization; Lithium-ion transport