Combined hydrogen generation from Al/NiCl_2 powder and alkaline NaBH_4 solution for portable fuel cell

摘要

Hydrolysis of Al and NaBH_4 for hydrogen generation has obtained considerable attention as a portable hydrogen source system. In this paper, we report a new combined hydrogen generation from Al powder and alkaline NaBH _4 solution activated by NiCl_2 additive. The system is characterized as the followed features: the interaction of Al/NaBH_4 hydrolysis, catalytic effect of Ni~2B for Al and NaBH_4, Al hydrolysis stimulated by NaOH solution. The effects which affect the hydrogen generation performance of the system were studied. The results showed that a favorable combination of high hydrogen yield and high hydrogen generation rate might be obtained via the optimized composition design. Therefore, the system may be developed as a portable hydrogen source system.