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| Hauptseite > Publikationsdatenbank > Conductivity, microstructure and mechanical properties oftape-cast LATP with LiF and SiO2 additives |
| Hauptseite > Publikationsdatenbank > Conductivity, microstructure and mechanical properties oftape-cast LATP with LiF and SiO2 additives |
| Conference Presentation (After Call) | FZJ-2023-05750 |
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2022
Abstract: LATP sheets with LiF and SiO 2 addition prepared by tape casting aselectrolytes for solid-state batteries were characterized regardingconductivity, microstructure and mechanical properties aimingtowards an optimized composition. The use of additives permitteda lowering of the sintering temperature. Rietveld analyses of thesamples with additives revealed a phase mixture of NaSICONmodifications crystallizing with rhombohedral and orthorhombicsymmetry as a superstructure with space group Pbca. It seemsthat LiF acts as a sintering additive but also as a mineralizer for thesuperstructure of LATP. As general trend, higher LiF to SiO2 ratiosled to lower porosities and higher values of elastic modulus andhardness determined by indentation testing, but the presence ofthe orthorhombic LATP leads to a decrease of the ionic conductivity.Micro-pillar testing was used to assess the crack growth behaviorrevealing weak grain boundaries.
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