Recently, LiAlH 4 has attracted attention as one of the most promising hydrogen storage materials, because LiAlH 4 is able to release large amount of hydrogen (7.9 mass%H 2 ) below 250°C. However, the kinetics of the dehydrogenation reaction of LiAlH 4 is too slow for applications to fuel cell vehicles. To improve the dehydrogenation kinetics, the dopant effect of TiCl 3 has been investigated in this research. Here, LiAlH 4 doped with various ratios (0, 0.1, 0.2, 0.5, 1.0, and 2.0 mol%) of TiCl 3 were prepared by ball milling for 30 min under a 1.0 MPa H 2 atmosphere. The decomposition of LiAlH 4 proceeds via a two-step reaction and the dehydrogenation kinetics of each step were compared to determine the optimum amount of TiCl 3 that would assist the process. With increasing of TiCl 3 amount, the dehydrogenation temperature for both of the reactions decreased. Activation energies decreased with increasing TiCl 3 amount, however the amount of desorbed hydrogen decreased. Considering the kinetics and hydrogen capacity in the both steps, the results suggest that the optimum amount of doped TiCl 3 for the dehydrogenation of LiAlH 4 is around 0.2 mol%.