Abstract: LiBH₄-NdCl₃ hydrogen storage system was prepared through high energy ball milling. The mechanism of NdCl₃ on LiBH₄ and the effects of pre-milling, milling time, ball-to-powder ratio, doping amount were systematically investigated. The results reveal that NdCl₃ reacts with LiBH₄ through destabilization effect showing a superior dehydrogenation performance. Reducing the NdCl₃ particle into nanosize which possesses higher surface energy can effectively modify the dehydrogenation of LiBH₄. The best balling time and ball-to-powder ratio are related to the original state of NdCl₃ with respect to particle size, crystal size and surface situation. Enhancing the contact area between LiBH₄ and NdCl₃ via increasing doping amount of NdCl₃ is one of the effective ways to improve the dehydrogenation performance of LiBH₄.

Key words: hydrogen energy, hydrogen storage material, destabilization, LiBH₄, NdCl₃