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Controllable hydrogen generation and hydrolysis mechanism of AlLi/NaBH4 system activated by CoCl2 solution

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  • Fan, Mei-Qiang
  • Liu, Shu
  • Sun, Wen Qiang
  • Fei, Yong
  • Pan, Hua
  • Shu, Kang-Ying

Abstract

Hydrogen generation performance of solid-state AlLi/NaBH4 mixture activated by CoCl2 solution was evaluated in the present work. Hydrogen generation performance can be regulated by AlLi/NaBH4 weight ratio, Li content, CoCl2 concentration, and hydrolysis temperature, among others. 1 g Al-20 wt% Li/NaBH4 mixture (weight ratio, 1:1) yields 1674 mL hydrogen with 89% efficiency in 2.5 wt%CoCl2 solution at 303 K. The relative hydrolysis mechanism and optimized composition design are reported and discussed through the analysis of XRD, SEM, IR, and particle size distribution. The hydrolysis byproducts LiOH and Co2B/Al(OH)3 are the major factors to improve the hydrolysis performance of an AlLi/NaBH4 mixture. Our experimental data show that the new method of hydrogen generation from AlLi/NaBH4 hydrolysis activated by CoCl2 solution may supply free CO2, portable hydrogen for proton exchange membrane fuel cell.

Suggested Citation

  • Fan, Mei-Qiang & Liu, Shu & Sun, Wen Qiang & Fei, Yong & Pan, Hua & Shu, Kang-Ying, 2012. "Controllable hydrogen generation and hydrolysis mechanism of AlLi/NaBH4 system activated by CoCl2 solution," Renewable Energy, Elsevier, vol. 46(C), pages 203-209.
    • Handle: RePEc:eee:renene:v:46:y:2012:i:c:p:203-209
    DOI: 10.1016/j.renene.2012.03.028
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    References listed on IDEAS

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    1. Çakanyıldırım, Çetin & Gürü, Metin, 2010. "Supported CoCl2 catalyst for NaBH4 dehydrogenation," Renewable Energy, Elsevier, vol. 35(4), pages 839-844.
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    Cited by:

    1. Chai, Y.J. & Dong, Y.M. & Meng, H.X. & Jia, Y.Y. & Shen, J. & Huang, Y.M. & Wang, N., 2014. "Hydrogen generation by aluminum corrosion in cobalt (II) chloride and nickel (II) chloride aqueous solution," Energy, Elsevier, vol. 68(C), pages 204-209.
    2. Fan, Mei-qiang & Wang, Yu & Tang, Rui & Chen, Da & Liu, Wei & Tian, Guang Lei & Lv, Chun Ju & Shu, Kang-ying, 2013. "Hydrogen generation from Al/NaBH4 hydrolysis promoted by Co nanoparticles and NaAlO2 solution," Renewable Energy, Elsevier, vol. 60(C), pages 637-642.

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    1. Chai, Y.J. & Dong, Y.M. & Meng, H.X. & Jia, Y.Y. & Shen, J. & Huang, Y.M. & Wang, N., 2014. "Hydrogen generation by aluminum corrosion in cobalt (II) chloride and nickel (II) chloride aqueous solution," Energy, Elsevier, vol. 68(C), pages 204-209.

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