Hydrogen generation from hydrolysis of activated magnesium/low-melting-point metals alloys

Fei Xiao, Yanpei Guo, Rongjie Yang*, Jianmin Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

A series of activated Mg-based alloys with low-melting-point metals (Zn, Sn, Bi, and In) are prepared by ball milling and characterized by scanning electron microscope and X-ray diffraction. Their hydrogen generation properties are systematically investigated in seawater and methanol. The results demonstrate that the addition of low-melting-point metals can significantly accelerate the reaction of magnesium with seawater and methanol. The alloy Mg-10%In exhibits the excellent hydrolysis properties among all the samples with the maximum hydrogen generation rate of 7.4 mL g −1 s −1 and the hydrogen conversion yield of 93% at 30 °C in seawater. The excellent hydrolysis performance of Mg-10%In can be attributed to its lower activation energy, lower corrosion potential, and higher corrosion current density. Moreover, the active preservation method of activated Mg alloys by coating dioctyl sebacate is studied.

Original languageEnglish
Pages (from-to)1366-1373
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume44
Issue number3
DOIs
Publication statusPublished - 15 Jan 2019

Keywords

  • Hydrogen generation
  • Low-melting-point metal
  • Magnesium
  • Milling

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