Surface changes on AlH3 during the hydrogen desorption

Shunsuke Kato; Michael Bielmann; Kazutaka Ikeda; Shin Ichi Orimo; Andreas Borgschulte; Andreas Züttel

doi:10.1063/1.3269598

Surface changes on AlH₃ during the hydrogen desorption

Shunsuke Kato, Michael Bielmann, Kazutaka Ikeda, Shin Ichi Orimo, Andreas Borgschulte, Andreas Züttel

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

Surface change of α -AlH₃ during the hydrogen desorption was investigated by means of in situ x-ray photoelectron spectroscopy combined with thermal desorption spectroscopy. The surface of AlH₃ covered by an oxide layer significantly changes upon hydrogen desorption and the hydrogen desorption rate increases remarkably. In this study, the role of the surface oxide layer on AlH₃ in view of the hydrogen desorption kinetics was investigated. AlH₃ only decomposes into Al and H₂ at the free surface and not in the bulk. Therefore, a closed surface oxide layer prevents the thermodynamically unstable AlH₃ from decomposition.

Original language	English
Article number	051912
Journal	Applied Physics Letters
Volume	96
Issue number	5
DOIs	https://doi.org/10.1063/1.3269598
Publication status	Published - 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3269598

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title = "Surface changes on AlH3 during the hydrogen desorption",

abstract = "Surface change of α -AlH3 during the hydrogen desorption was investigated by means of in situ x-ray photoelectron spectroscopy combined with thermal desorption spectroscopy. The surface of AlH3 covered by an oxide layer significantly changes upon hydrogen desorption and the hydrogen desorption rate increases remarkably. In this study, the role of the surface oxide layer on AlH3 in view of the hydrogen desorption kinetics was investigated. AlH3 only decomposes into Al and H2 at the free surface and not in the bulk. Therefore, a closed surface oxide layer prevents the thermodynamically unstable AlH3 from decomposition.",

author = "Shunsuke Kato and Michael Bielmann and Kazutaka Ikeda and Orimo, {Shin Ichi} and Andreas Borgschulte and Andreas Z{\"u}ttel",

note = "Funding Information: This work was financially supported by the Swiss Federal Office of Energy (BFE), the European Commission [Contract No. MRTN-CT-2006-035366 (COSY)], the Integrated Project of ICC-IMR, Tohoku University, and the Seeds Innovation Project of JST.",

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T1 - Surface changes on AlH3 during the hydrogen desorption

AU - Kato, Shunsuke

AU - Bielmann, Michael

AU - Ikeda, Kazutaka

AU - Orimo, Shin Ichi

AU - Borgschulte, Andreas

AU - Züttel, Andreas

N1 - Funding Information: This work was financially supported by the Swiss Federal Office of Energy (BFE), the European Commission [Contract No. MRTN-CT-2006-035366 (COSY)], the Integrated Project of ICC-IMR, Tohoku University, and the Seeds Innovation Project of JST.

PY - 2010

Y1 - 2010

N2 - Surface change of α -AlH3 during the hydrogen desorption was investigated by means of in situ x-ray photoelectron spectroscopy combined with thermal desorption spectroscopy. The surface of AlH3 covered by an oxide layer significantly changes upon hydrogen desorption and the hydrogen desorption rate increases remarkably. In this study, the role of the surface oxide layer on AlH3 in view of the hydrogen desorption kinetics was investigated. AlH3 only decomposes into Al and H2 at the free surface and not in the bulk. Therefore, a closed surface oxide layer prevents the thermodynamically unstable AlH3 from decomposition.

AB - Surface change of α -AlH3 during the hydrogen desorption was investigated by means of in situ x-ray photoelectron spectroscopy combined with thermal desorption spectroscopy. The surface of AlH3 covered by an oxide layer significantly changes upon hydrogen desorption and the hydrogen desorption rate increases remarkably. In this study, the role of the surface oxide layer on AlH3 in view of the hydrogen desorption kinetics was investigated. AlH3 only decomposes into Al and H2 at the free surface and not in the bulk. Therefore, a closed surface oxide layer prevents the thermodynamically unstable AlH3 from decomposition.

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Surface changes on AlH₃ during the hydrogen desorption

Abstract

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