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Mild hydrogen production from the hydrolysis of Al–Bi–Zn composite powder
Authors:Cuiping Wang  Changrui Qiu  Haiting Wei  Hongwei Zou  Kairui Lin  Yihui Guo  Shuiyuan Yang  Xingjun Liu
Affiliation:1. College of Materials and Fujian Provincial Key Laboratory of Materials Genome, Xiamen University, Xiamen, 361005, China;2. Institute of Materials Genome and Big Data, Harbin Institute of Technology, Shenzhen, 518055, China;3. Shenzhen R&D Center for Al-based Hydrogen Hydrolysis Materials, Shenzhen, 518055, China
Abstract: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 °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.
Keywords:Al–Bi–Zn composite powder  Gas atomization  Hydrogen production performance  Morphology evolution
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