Dresden 2026 – scientific programme
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FM: Fachverband Funktionsmaterialien
FM 5: Focus Session: Holistic structural and safety assessment of battery materials and cells
FM 5.2: Talk
Monday, March 9, 2026, 15:15–15:30, BEY/0E40
Suppressing Li movement in solid-state electrolyte via Cryo EM Workflows: LLZO case study — •yuqi liu1, yuwei zhang1, Jazmin Durate1, Yug Joshi1, and Baptiste Gault2 — 1Max Planck Institute for Sustainable Materials, 40237 Düsseldorf, Germany — 2Univ Rouen Normandie, CNRS, INSA Rouen Normandie, Groupe de Physique des Matériaux, UMR 6634, F-76000 Rouen, France
Focused Ion Beam-Scanning Electron Microscopy (FIB-SEM) is widely used to examine solid-state battery materials and prepare site-specific samples for advanced techniques such as Electron Backscatter Diffraction (EBSD), Transmission Electron Microscopy (TEM), and Atom Probe Tomography (APT). However, the electron beam can induce irreversible damage particularly in lithium-containing systems by driving lithium displacement and expulsion, thereby compromising data reliability.
In this work, we investigate how cryogenic conditions mitigate beam-induced damage in LLZO, with an emphasis on lithium expulsion under varying beam parameters. We demonstrate that lithium mobility is significantly suppressed at cryogenic temperatures, leading to a marked reduction in beam-driven lithium redistribution. Based on a comprehensive set of cryogenically prepared EBSD and APT datasets, we show that cryo-enabled workflows are essential for obtaining structurally and chemically artefact-free characterization of LLZO and, more broadly, for reliable analysis of solid-state battery materials.
Keywords: solid state electrolyte; advanced characterisation; battery; atom probe