Fast hydrolysis and hydrogen generation on Al-Bi alloys and Al-Bi-C composites synthesized by high-pressure torsion

Fan Zhang, Kaveh Edalati, Makoto Arita, Zenji Horita

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    Al-Bi alloys and Al-Bi-C composites with different compositions were synthesized by high-pressure torsion (HPT) and their hydrogen generation behavior via hydrolysis was investigated in contact with pure water. Bi was added to Al to enhance the effect of nano-galvanic cells and to promote the pitting corrosion, and C in the form of graphite was added to Al to accelerate the fragmentation of the composite and to increase the total active surface area. An optimized Al-30 wt%Bi-10 wt%C composition exhibited a hydrogen generation rate as fast as 270 ml min−1 g−1 in water and its total hydrogen generation amount reached the theoretical level at 333 K (all aluminum atoms reacted with water in less than 10 min and formed Al2O3).

    Original languageEnglish
    Pages (from-to)29121-29130
    Number of pages10
    JournalInternational Journal of Hydrogen Energy
    Volume42
    Issue number49
    DOIs
    Publication statusPublished - Dec 7 2017

    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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