|About this Abstract
|MS&T21: Materials Science & Technology
|Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|Mechanical Properties and Ionic Conductivity of Li2O-Al2O3-TiO2-P2O5 Prepared Using Laser Powder Bed Fusion
|Katherine A. Acord, Alexander D. Dupuy, Olivia K. Donaldson, Xin Wang, Timothy J. Rupert, James J. Wu, Qian Nataly Chen, Julie M. Schoenung
|On-Site Speaker (Planned)
|Katherine A. Acord
Laser-based additive manufacturing offers a novel approach to single-step fabrication of functional ceramic materials without the use of inactive components (e.g., binders, slurries) employed in traditional ceramic additive manufacturing. We investigate the microstructure, mechanical properties, and ionic conductivity of the lithium ion battery solid electrolyte Li2O-Al2O3-TiO2-P2O5 (LATP) prepared using the laser-based additive manufacturing technique, laser powder bed fusion (L-PBF). The resulting bulk three-dimensional (3D) LATP samples exhibit high density (94-96%), structural stability and geometric complexity. The phase states and mechanical properties of the 3D LATP samples are comparable to conventionally sintered LATP samples. While the amount of secondary phase that forms during L-PBF is consistent with high temperature processing of LATP, the heterogenous size and distribution of secondary phase particles in 3D LATP samples influence the ionic conductivity. This study demonstrates that L-PBF is a promising method for the single-step fabrication of functional ceramic materials for lithium ion batteries.