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Effect of salts addition on the hydrogen generation of Al–LiH composite elaborated by ball milling

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  • Liu, Yongan
  • Wang, Xinhua
  • Liu, Haizhen
  • Dong, Zhaohui
  • Li, Shouquan
  • Ge, Hongwei
  • Yan, Mi

Abstract

Hydrogen generation from ball milled Al–LiH-salts mixture is studied. Different salts are used to test their effects on the hydrolysis properties of Al–LiH composite. KCl is found to be more effective than other salts and shows the best performance. Raising initial reaction temperature can effectively improve hydrogen yield and HG (hydrogen generation) rate of the Al–LiH–KCl mixture. Optimizing the milling conditions is necessary to improve the hydrogen generation performances of the composites. The addition amounts of KCl and LiH are varied and 10 mol% proves to be the optimum value for both of them in this work. Too much addition of LiH or KCl will cause the decrease of the hydrogen yield. A proper milling time of 10 h is discovered in this work which is beneficial for the decrease of grain size and improvement of reactivity. The 10 h milled Al-10 mol%LiH-10 mol% KCl mixture reaches a hydrogen yield of 97.1% in 10 min at 60 °C. Preliminary mechanism for the improvement has been discussed.

Suggested Citation

  • Liu, Yongan & Wang, Xinhua & Liu, Haizhen & Dong, Zhaohui & Li, Shouquan & Ge, Hongwei & Yan, Mi, 2015. "Effect of salts addition on the hydrogen generation of Al–LiH composite elaborated by ball milling," Energy, Elsevier, vol. 89(C), pages 907-913.
    • Handle: RePEc:eee:energy:v:89:y:2015:i:c:p:907-913
    DOI: 10.1016/j.energy.2015.06.043
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    References listed on IDEAS

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    1. Fan, Mei Qiang & Sun, Li Xian & Xu, Fen, 2011. "Hydrogen production for micro-fuel-cell from activated Al–Sn–Zn–X (X: hydride or halide) mixture in water," Renewable Energy, Elsevier, vol. 36(2), pages 519-524.
    2. Liu, Yongan & Wang, Xinhua & Dong, Zhaohui & Liu, Haizhen & Li, Shouquan & Ge, Hongwei & Yan, Mi, 2013. "Hydrogen generation from the hydrolysis of Mg powder ball-milled with AlCl3," Energy, Elsevier, vol. 53(C), pages 147-152.
    3. Liu, Yongan & Wang, Xinhua & Liu, Haizhen & Dong, Zhaohui & Cao, Guozhou & Yan, Mi, 2014. "Hydrogen generation from Mg–LiBH4 hydrolysis improved by AlCl3 addition," Energy, Elsevier, vol. 68(C), pages 548-554.
    4. Zhao, Zhongwei & Chen, Xingyu & Hao, Mingming, 2011. "Hydrogen generation by splitting water with Al–Ca alloy," Energy, Elsevier, vol. 36(5), pages 2782-2787.
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    Cited by:

    1. Su, Ming & Hu, Haiping & Gan, Jianchang & Ye, Wenhua & Zhang, Wenhua & Wang, Huihu, 2021. "Thermodynamics, kinetics and reaction mechanism of hydrogen production from a novel Al alloy/NaCl/g-C3N4 composite by low temperature hydrolysis," Energy, Elsevier, vol. 218(C).
    2. Xiao, Fei & Guo, Yanpei & Li, Jianmin & Yang, Rongjie, 2018. "Hydrogen generation from hydrolysis of activated aluminum composites in tap water," Energy, Elsevier, vol. 157(C), pages 608-614.
    3. Xiao, Fei & Yang, Rongjie & Li, Jianmin, 2019. "Hydrogen generation from hydrolysis of activated aluminum/organic fluoride/bismuth composites with high hydrogen generation rate and good aging resistance in air," Energy, Elsevier, vol. 170(C), pages 159-169.
    4. Ma, Miaolian & Yang, Lingli & Ouyang, Liuzhang & Shao, Huaiyu & Zhu, Min, 2019. "Promoting hydrogen generation from the hydrolysis of Mg-Graphite composites by plasma-assisted milling," Energy, Elsevier, vol. 167(C), pages 1205-1211.

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