Hydrogen absorption of nanoscale Pd particles embedded in ZrO2 matrix prepared from Zr-Pd amorphous alloys

Shin Ichi Yamaura, Ken Ichiro Sasamori, Hisamichi Kimura, Akihisa Inoue, Yue Chang Zhang, Yoshiaki Arata

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    Nanocomposite materials consisting of ZrO2 and Pd phases were prepared by heating the amorphous Zr65Pd35 alloy for 24 h at 553 K in air. The maximum hydrogen absorption amount is about 2.4 mass% (H2/Pd) at 323 K and 2.2 mass% (H2/Pd) at 423 K at hydrogen pressure of 1 MPa. The absorption amount of Pd nanoparticles in the nanocomposite is a few times larger than those for the bulk and powder Pd metals. The remarkable increase in the hydrogen absorption/desorption amounts seems to result from the isolated dispersion state of Pd nanoparticles in the ZrO2 phase containing a tremendously large interface area in the nanocomposite.

    Original languageEnglish
    Pages (from-to)1329-1334
    Number of pages6
    JournalJournal of Materials Research
    Volume17
    Issue number6
    DOIs
    Publication statusPublished - 2002 Jun

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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