LiAlPO4OH2O

LiAlPO4OH2O refers to a hydrated form of lithium aluminum phosphate, a compound composed of lithium, aluminum, phosphate groups, and water incorporated into the crystal lattice. The notation suggests a hydrate, and in practice the exact stoichiometry can vary with synthesis and conditions, with formulations described in the literature as LiAlPO4·H2O or related hydrated derivatives. The presence of water molecules and possible hydroxyl species within the structure influences the material’s crystallinity and hydrogen-bonding network.

In terms of structure, LiAlPO4OH2O is expected to consist of phosphate (PO4) tetrahedra linked to aluminum centers, forming a phosphate-based framework that accommodates lithium ions. Water molecules are typically accommodated in interstitial sites or coordinated environments, contributing to a hydrated crystal lattice. As a result, the material may exhibit different hydration states, which can affect properties such as density, thermal behavior, and ionic mobility.

Synthesis routes described for hydrated lithium aluminum phosphates often involve hydrothermal or aqueous-based solid-state methods, using sources of Li, Al, and phosphate under controlled humidity or water-rich conditions. Post-synthesis handling can influence hydration level, and heating can drive dehydration, potentially converting the hydrate to an anhydrous LiAlPO4 phase.

Applications for LiAlPO4OH2O are mainly in the realm of research on phosphate ceramics and solid-state electrolytes, where hydrated phosphate frameworks are explored for ion conduction and dielectric properties. The material is not widely used in commercial products, and detailed performance data vary with synthesis, hydration level, and microstructure. Further reading includes studies on lithium phosphate ceramics and LAP-based hydrates in solid-state chemistry.