Crystal structure of GdNi3 with superlattice alloy and its hydrogen absorption-desorption property

被引:19
|
作者
Iwase, Kenji [1 ]
Mori, Kazuhiro [2 ]
Hoshikawa, Akinori [1 ]
Ishigaki, Toru [1 ]
机构
[1] Ibaraki Univ, Frontier Res Ctr Appl Sci, Naka Ku, Tokai, Ibaraki 3191106, Japan
[2] Kyoto Univ, Inst Res Reactor, Sennan, Osaka 5900494, Japan
关键词
Crystal structure; XRD; P-C isotherm; STORAGE PROPERTIES;
D O I
10.1016/j.ijhydene.2012.05.139
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We synthesized the intermetallic compound GdNi3, which has a PuNi3-type structure (space group R-3m), and investigated its P-C isotherm. The refined lattice parameters were a = 0.4993(1) nm and c = 2.4536(4) nm. In the first absorption process, two plateaus were observed, and the maximum hydrogen capacity reached 1.07 H/M. In the first desorption process, a narrow and sloping plateau was observed at approximately 0.02 MPa. After the first full desorption, 0.6 H/M of hydrogen remained in the sample. This sample showed severe peak broadening in the XRD pattern, indicating that the metal sublattice deformed from the original alloy. No plateau region was observed in the second absorption-desorption cycle. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:15170 / 15174
页数:5
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