Optimizing the Synthesis and Characterization of Garnet-Type Thin Film Ceramic Electrolytes for Solid-State Lithium Batteries

This study focuses on the synthesis and characterization of thin-film ceramic electrolytes, specifically Lithium Lanthanum Zirconium Oxide (LLZO) and Lithium Lanthanum Zirconium Tantalum Oxide (LLZTO), for application in solid-state lithium batteries (SSBs). These materials, known for their high ionic conductivity and chemical stability, are critical for enhancing the performance and safety of next-generation energy storage systems. However, stabilizing the high-conductivity cubic phase at room temperature remains a challenge. To address this, innovative synthesis techniques, including electrospinning and tape casting, were employed to produce nanostructured fibers and films. Various experimental parameters, such as precursor composition, milling conditions, and environmental controls, were optimized to achieve desirable morphological and structural properties. Characterization of the synthesized materials using X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS) revealed significant improvements in phase stability, mechanical flexibility, and ionic conductivity. The results demonstrate the effectiveness of developing efficient method of producing solid electrolyte ceramic. This research not only advances the understanding of garnet-type electrolytes but also provides insights into scalable manufacturing techniques for high-performance solid-state lithium batteries.