METHOD OF PREPARATION OF TI-DOPER LITHIUM ALUMINUM HYDRIDE FOR HIGH PERFORMANCE HYDROGEN STORAGE

摘要

The invention provides systems and methods for preparing a metal hydride, such as LiAlH4, that can be dehydrogenated and rehydrogenated under mild conditions. The hydride includes a dopant, such as 0.2 to 0.5 mol% titanium salt ball milled with the hydride. The hydrogenation is performed using Me2O as a solvent for H2 under conditions of approximately 100 bar H2 pressure at 120 °C. The Me2O solvent is removed at ambient temperature, to provide a dry, hydrogenated powder. Hydrogen evolves from the hydrogenated powder at temperatures as low as 80 °C.