Hydride phase formation in LaMg2Ni during H2 absorption

被引：12
|
作者：
Di Chio, M. [1 ,2 ]
Schiffini, L. [3 ,4 ]
Enzo, S. [3 ,4 ]
Cocco, G. [3 ,4 ]
Baricco, M. [1 ,2 ]
机构：
[1] Univ Turin, Dipartimento Chim IFM, I-10125 Turin, Italy
[2] Univ Turin, NIS, CNISM, INSTM, I-10125 Turin, Italy
[3] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy
[4] Univ Sassari, INSTM, I-07100 Sassari, Italy
来源：
RENEWABLE ENERGY | 2008年 / 33卷 / 02期
关键词：
hydride; hydrogen storage; ball milling; Rietveld refinement;
D O I：
10.1016/j.renene.2007.05.011
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Hydrogen absorption and desorption properties in nanocrystalline LaMg2Ni are presented. Nanostructured phases have been obtained by milling grain coarse ingot and by mechanically alloying the parent elements. The structural and hydriding properties were examined by X-ray diffraction, thermal analysis and thermal desorption measurements. Ball milling and mechanical alloying give a significant refinement of the microstructure. Reactive milling has been used for hydrogen absorption experiments. Hydrogenation by means of reactive milling at 300 K under a pressure of 0.4 MPa leads to the formation of a stable La-hydride phase together with an amorphous phase. Thermal desorption LIP to 983 K of hydrogenated samples leads again to parent LaMg2Ni phase. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：237 / 240
页数：4
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