All-ceramics solid-state lithium batteries based on LiCoO2 cathode and LATP solid-state electrolyte

All-solid-state lithium batteries (ASSLB) have been rapidly developed in recent years. These solid-state systems are poised to address the urgent need for safe, non-flammable, and temperature-tolerant energy storage batteries that concomitantly possess improved energy density and cycle life as compared to conventional liquid-electrolyte-based counterparts. In this project, ASSLB based on Li1+xAlxTi2-x(PO4)3 (LATP, x = 0.3 – 0.5) solid-state electrolytes are fabricated in the shape of a thin membrane. LiCoO2 (LCO), as high voltage cathode materials, is co-sintered together with LATP as a composite cathode and forms one-body batteries with an extra LATP layer. The project is motivated by its all ceramics properties with a safe and high energy density structure. The sintering process and the electrochemical phase change during cell cycling will be carefully studied by synchrotron X-ray diffraction (SXRD).