Lithium aluminum oxide (LiAlO₂) is an inorganic compound with a CAS number of 12003-67-7. It exists in several crystalline phases, primarily α-LiAlO₂, β-LiAlO₂, and γ-LiAlO₂, each with distinct structural properties. It is a white, refractory ceramic material known for its high thermal and chemical stability. Its primary application is as a solid electrolyte matrix or a support material in molten carbonate fuel cells (MCFCs). In this role, LiAlO₂ provides a stable, porous structure to hold the molten carbonate electrolyte and facilitates ionic conduction. It is also investigated as a potential electrolyte or coating material for solid oxide fuel cells (SOFCs) and lithium-ion batteries due to its lithium-ion conductivity and stability against electrode materials. Furthermore, specific phases of LiAlO₂ serve as catalyst supports or precursors in various chemical processes. The material is valued for its excellent resistance to carbonation and corrosion in harsh, high-temperature environments. Handling requires standard precautions for fine ceramic powders to avoid inhalation.