Popcorn-like aluminum-based powders for instant low-temperature water vapor hydrogen generation

Xinren Chen, Cuiping Wang, Yuheng Liu, Yansong Shen, Qijun Zheng, Shuiyuan Yang, Huanming Lu, Hongwei Zou, Kairui Lin, Hongxin Liu, Huajun Qiu, Junwei Wu, Qian Zhang, Xingjun Liu

研究成果: Article査読

6 被引用数 (Scopus)


Aluminum is a typical metal with a quick and self-healing passivation course. The dense oxidation film effectively prevents aluminum from being continuously oxidized by oxygen or water vapor. In this study, we report a kind of aluminum alloy powders that shows popcorn-like shape transformation in the reaction with low-temperature water vapor, which demonstrates that circumventing the passivation of aluminum alloy through the self-sustaining shape changes in hydrolysis reaction can become a reality. In-situ experiments disclosed that the hydrogen-assisted cracking and the interfacial corrosion play important roles in facilitating aluminum reactivity and cause a popcorn-like shape transformation. Moreover, the amorphous hydrated layer may enhance water transportation through the oxidation layer by the ‘spongy’ behavior. This study reveals a special corrosion mechanism of aluminum and provides a promising perspective of using aluminum in the energy field.

ジャーナルMaterials Today Energy
出版ステータスPublished - 2021 3月

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(その他)
  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • エネルギー工学および電力技術


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