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| Investigation Of Stability And Hydrogen Storage Properties Of LaNi5-XMx（M=Al, Mn) Alloys |
| ZHANG Ruijing; LŰ Manqi; CHEN Demin; YANG Ke |
| Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
ZHANG Ruijing; L&#; Manqi; CHEN Demin; YANG Ke. Investigation Of Stability And Hydrogen Storage Properties Of LaNi5-XMx（M=Al, Mn) Alloys. Acta Metall Sin, 2005, 41(4): 427-432 .
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Abstract The structure, thermodynamic, hydrogen storage capacity, plateau pressure
of LaNi5-xMx(M=Al, Mn) hydrides have been investigated.
A relationship among x, the plateau pressure and the temperature is
derived from the experimental data. The influences of the lattice parameter
and cell volume, the stability of alloys on the hydrogen storage properties
are discussed. As a result, LaNi5-xMnx alloys with larger cell
volumes compared with LaNi5-xAlx alloys have lower plateau
pressure. The anisotropic degree of the crystal volumes expansion in
directions of the a and c axis and the change of stability of
LaNi5-xMx alloys as a function of the Mn content are smaller
than that as a function of the Al content. It is in agreement with the
unconspicuous attenuation of hydrogen storage capacity in
LaNi5-xMnx.
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Received: 17 June 2004
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