All-solid-state lithium batteries based on Li1+xAlxTi2-x(PO4)3 (LATP, x = 0.3-0.5) solid-state electrolyte and LiFePO4 (LFP) cathode active

All-solid-state lithium batteries (ASSLBs) have gained significant attention as a next-generation energy storage solution due to
enhanced safety, non-flammability, and superior thermal stability while providing higher energy density than conventional liquid-electrolyte
batteries. In this project, ASSLBs based on Li1+xAlxTi2-x(PO4)3 (LATP, x = 0.3-0.5) solid-state electrolytes (SSE) will be fabricated in the form
of thin membranes. LiFePO4 (LFP), a low-cost cathode material with a long cycle life, will be co-sintered with LATP to form a composite
cathode and assemble it with the LATP SSE layer, offering a safer, more energy-dense all-ceramic alternative to prevailing designs. The
electrochemical phase change during cell cycling will be systematically investigated using synchrotron X-ray diffraction (SXRD).

全固态锂电池（All-solid-state lithium batteries, ASSLBs）凭借更高的安全性、不可燃性与优异的热稳定性，且较传统液态电解质电池具备更高的能量密度，已作为下一代储能解决方案受到广泛关注。本项目将制备基于Li₁₊ₓAlₓTi₂₋ₓ(PO₄)₃（LATP，x=0.3~0.5）固态电解质（Solid-state electrolytes, SSE）的薄膜形态全固态锂电池。选用低成本且长循环寿命的正极材料磷酸铁锂（LiFePO4, LFP），将其与LATP共烧结制备复合正极，并与LATP固态电解质层进行组装，从而获得相较于当前主流设计更安全、能量密度更高的全陶瓷型电池方案。本研究将通过同步辐射X射线衍射（Synchrotron X-ray diffraction, SXRD）系统探究电池循环过程中的电化学相变。