Abstract: AlH₃（aluminium trihydride）,as an ideal hydrogen carrier,has been received much attention in China and abroad due to a higher hydrogen storage capacity (theoretical mass fraction of hydrogen storage capacity reached 10％) and stable H₂ release rate below 100 ℃ after modification.Properties (physicochemical property),synthesis methods (liquid phase indirect synthesis and solid phase direct synthesis etc.),modifications (physical modification and chemical doping modification),and application (the application in rocket composite solid propellant and the application in the hydrogen storage technology of fuel cell vehicles) of AlH₃ were summarized and the trend of the hydrogen storage technology was also pointed ont.

Key words: aluminium trihydride, hydrogen storage material, synthesis methods, modification, application