Synergistic effect on hydrolytic sodium borohydride adding waste Al for hydrogen generation

Cheng Pu Hsieh, Ching Yuan Ho, Li Chung Hsu, Yaw Jen Chang

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9 Citations (Scopus)


Synergistic effect of sodium borohydride (NaBH4) mixed with waste aluminum in hydrolytic system were investigated to improve the hydrogen generation (HG) efficiency. The alkaline aqueous originated from NaBH4 hydrolysis impels the passive aluminum hydroxide film of Al surface to be dissolved, thus, mutual effect of HG amount increasing by 88% and 50% for Al powder and waste Al can, respectively. To add acid catalyst in the mutual mixture system prompts to significantly accelerate HG rate from 100 ml/min˙g to 400 ml/min˙g but raising temperature is not obviously found. It is speculated that exothermic effect dominates the NaBH4 hydrolytic reaction and eliminates the temperature effect. In this study, the mutual hydrolyzed reaction of NaBH4 and waste Al provides ecofriendly environment, low cost and enables to achieve higher HG rate and further uses for portable/mobile fields.

Original languageEnglish
Pages (from-to)10334-10341
Number of pages8
JournalInternational Journal of Hydrogen Energy
Issue number17
Publication statusPublished - 2020 Mar 27

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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