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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.47: Poster
Monday, March 27, 2023, 18:00–20:00, P3
Influence of Al2O3 concentration in poly(propylene carbonate) based solid polymer electrolyte — •Thien An Pham1,2, Ralph Gilles1, and Peter Müller-Buschbaum1,2 — 1MLZ, TUM, Garching, Germany — 2TUM School of Natural Sciences, Chair for Functional Materials, Garching, Germany
Solid polymer electrolytes (SPE) have emerged as promising electrolyte material group for all-solid-state batteries that allow the operation with Li metal anodes. Representing one of the main obstacles for Li metal anodes, Li dendrite growth can lead to short circuits which ultimately prevent the usage with liquid electrolytes. SPE offer higher mechanical stability compared to their liquid counterparts and thus, increase the general safety of Li metal batteries.
In this work, poly(propylene carbonate) based solid polymer electrolytes were synthesized with Lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) as Li salt and varying Al2O3 concentrations via solution casting. The addition of Al2O3 has shown to increase the ionic conductivity of SPEs while simultaneously improve the mechanical stability. Furthermore, small angle X-ray scattering and FTIR were used to study the influence of Al2O3 on the structure of the SPE.