Advanced Synchrotron Micro-characterization of All-Solid-State Li-ion Battery Thin-Films Prepared by Suspension Plasma Spraying
This study explores the phase and elemental distribution in all-solid-state Li-ion battery thin films produced by suspension plasma spraying (SPS) for advanced energy storage applications. The research emphasizes the importance of SPS as a versatile technique for depositing high-quality thin-films, essential for advanced energy storage systems. By employing advanced synchrotron-based microcharacterization methods, such as µXRD and µXRF, the investigation provides a detailed understanding of the spatial distribution of elements and crystalline structures within the thin films at the microscale. The analysis reveals the influence of thermal exposure during the SPS process on the microstructure, which plays a crucial role in determining the performance of the thin films in all-solid-state Li-ion battery applications. The primary phase remained stable across most of the film thickness, while localized transformations into secondary phases, particularly near the solid–solid interfaces, were observed. These findings underscore the importance of optimizing SPS parameters to improve phase stability and interfacial integrity in high-performance energy storage systems.
Keywords: Suspension Plasma Spraying, All-Solid-State Li-ion Battery, Synchrotron micro-X-ray diffraction and micro-X-ray fluorescence.