Mild hydrogen production from the hydrolysis of Al-Bi-Zn composite powder
Mild hydrogen production from the hydrolysis of Al-Bi-Zn composite powder
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Al-Bi-Zn 复合粉末水解产生温和氢气
DOI：
10.1016/j.ijhydene.2020.12.104
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发表时间：
2021
影响因子：
7.2
通讯作者：
Liu Xingjun
中科院分区：
文献类型：
--
作者：
Wang Cuiping;Qiu Changrui;Wei Haiting;Zou Hongwei;Lin Kairui;Guo Yihui;Yang Shuiyuan;Liu Xingjun
温和产氢材料的开发对提高氢氧燃料电池的工作寿命具有重要意义。本文通过相图计算设计了Al-Bi-Zn复合粉体，并采用气雾化法制备了复合粉体。结果表明，Al-12Bi-7Zn （wt.%）粉末在50℃下280 min内产氢稳定，转化率可达98%。复合粉末与NaCl溶液反应产氢时，反应过程的休眠期明显缩短，但转化率略有降低。此外，还研究了反应过程中粉末形态的演变。结果表明，粉末的不断开裂导致新鲜Al的不断暴露发生反应。
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.