Mild hydrogen production from the hydrolysis of Al-Bi-Zn composite powder

The development of mild hydrogen-generating materials is of great significance to improve the working life of hydrogen-oxygen fuel cells. In this study, Al-Bi-Zn composite powders were designed by phase diagram calculation and then prepared via the gas atomization method. The results indicated that the conversion yield of Al-12Bi-7Zn (wt.%) powder reached 98% with stable hydrogen production within 280 min at 50 degrees C. When composite powder reacted with NaCl solution to produce hydrogen, the dormant period of the reaction process was significantly shortened, but the conversion rate was slightly reduced. Additionally, the evolution of powder morphology during the reaction was investigated. The results showed that the continuous cracking of the powder led to the continuous exposure of fresh Al to react. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

The development of Al-Bi-Zn composite powders showed promising results in stable and high conversion rate hydrogen production, which could further improve the efficiency of hydrogen-oxygen fuel cells and extend their working life.