Structural and Hydrogen Desorption Properties of Aluminum Hydride

Kazutaka Ikeda; Hidetoshi Ohshita; Naokatsu Kaneko; Junrong Zhang; Masao Yonemura; Toshiya Otomo; Kentaro Suzuya; Hiroshi Yukawa; Masahiko Morinaga; Hai-Wen Li; Satoshi Semboshi; Shin-ichi Orimo

doi:10.2320/matertrans.MA201019

Kazutaka Ikeda, Hidetoshi Ohshita, Naokatsu Kaneko, Junrong Zhang, Masao Yonemura, Toshiya Otomo, Kentaro Suzuya, Hiroshi Yukawa, Masahiko Morinaga, Hai-Wen Li, Satoshi Semboshi, Shin-ichi Orimo

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Keywords: hydrogen, hydride, aluminum, X-ray diffraction, neutron diffraction

JOURNAL FREE ACCESS

2011 Volume 52 Issue 4 Pages 598-601

DOI https://doi.org/10.2320/matertrans.MA201019

View "Advance Publication" version (March 2, 2011).

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Abstract

The structural and hydrogen/deuterium desorption properties of AlH₃/AlD₃ were investigated by Raman spectroscopy, high-intensity X-ray/neutron diffraction, and thermogravimetric analysis. The latter revealed that more than 9.6 mass% of hydrogen/18.1 mass% of deuterium desorbs from AlH₃/AlD₃, respectively. The presence of χ-Al₂O₃ on the surface may prevent the hydrogen/deuterium desorption reaction of AlH₃/AlD₃ to Al at room temperature.

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