Berlin 2024 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Poster I
CPP 15.29: Poster
Monday, March 18, 2024, 18:00–20:00, Poster C
Operando study of structure evolution with PEO-LLZTO composite electrolyte in all-solid-state lithium batteries — •Tannu Garg1, Yuxin Liang1, and Peter Müller-Buschbaum1,2 — 1TUM School of Natural Sciences, Chair for Functional Materials Garching , Germany — 2MLZ, TUM, Garching, Germany
Solid-state lithium batteries are promising for next-generation energy storage due to their potential for high energy density and safety. This proposal focuses on the operando study of the poly(ethylene oxide) (PEO)-LLZTO composite electrolyte in all-solid-state lithium batteries, with a specific emphasis on observing the structure evolution in bias conditions. The composite electrolyte consists of PEO + LiTFSI matrix and inorganic filler Li6.4La3Zr1.4Ta0.6O12 (LLZTO) in varying weight percentages. The study aims to investigate the phase segregation and polymer region shrinkage with increasing LLZTO content. Additionally, it will explore the diffusion behavior of Li+ ions and the generation of interfaces in different composite electrolytes. The proposal also outlines plans for X-ray scattering analysis and charge/discharge cycling of LLZTO to further enhance the understanding of the system. The study will contribute to the ongoing efforts to develop high-performance all-solid-state lithium batteries by providing insights into the behavior and evolution of PEO-LLZTO composite electrolytes under bias conditions.
Keywords: Solid-state lithium batteries; Charge/discharge cycling; PEO-LLZTO composite electrolyte; Composite electrolyte; X-ray scattering analysis