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

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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.

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Authors and Affiliations

  1. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, 980-8577, Aoba, Sendai, Japan

    Shin-Ichi Yamaura, Ken-Ichiro Sasamori, Hisamichi Kimura & Akihisa Inoue

  2. Osaka University, 11-1 Mihogaoka, 567-0047, Ibaraki, Osaka, Japan

    Yue Chang Zhang & Yoshiaki Arata

Authors
  1. Shin-Ichi Yamaura
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  2. Ken-Ichiro Sasamori
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  3. Hisamichi Kimura
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  4. Akihisa Inoue
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  5. Yue Chang Zhang
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  6. Yoshiaki Arata
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Yamaura, SI., Sasamori, KI., Kimura, H. et al. Hydrogen absorption of nanoscale pd particles embedded in ZrO2 matrix prepared from Zr-Pd amorphous alloys. Journal of Materials Research 17, 1329–1334 (2002). https://doi.org/10.1557/JMR.2002.0198

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  • DOI: https://doi.org/10.1557/JMR.2002.0198

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