Author/Authors :
Wu، نويسنده , , Tao and Xu، نويسنده , , Fen and Sun، نويسنده , , Li-Xian and Cao، نويسنده , , Zhong and Chu، نويسنده , , Hai-Liang and Sun، نويسنده , , Yu Jia and Wang، نويسنده , , Ling and Chen، نويسنده , , Peihai and Chen، نويسنده , , Jiao and Pang، نويسنده , , Ying and Zou، نويسنده , , Yongjin and Qiu، نويسنده , , Shu-Jun and Xiang، نويسنده , , Cui-Li and Zhang، نويسنده , , Huan-Zhi، نويسنده ,
Abstract :
A novel material for hydrogen generation with high capacity of H2 generation has been successfully prepared by ball milling the mixture of Al and home-made fresh Li3AlH6 powder. Its theoretical capacity of hydrogen released is higher than that of pure Al. Results obtained have shown conversion efficiency of Al–Li3AlH6 composite can be close to 100% by increasing the content of Li3AlH6. When the content of Li3AlH6 is 20 wt%, the maximum hydrogen generation rate and hydrogen yield are 2737.6 mL g−1 min−1 and 1513.1 mL g−1, respectively, at room temperature. By XRD, SEM analyses and reaction heat measurements, it demonstrates that the additive Li3AlH6 can provide an additional source of H2 and an alkaline environment (LiOH) as well as additional heat to promote the Al/H2O reaction. Therefore, the Al–Li3AlH6 composite has a very high activity and high capacity of hydrogen released.
Keywords :
Mechanism , Reaction heat , Hydrogen generation , Al–Li3AlH6 composite
