The Study of Microstructure and Electrochemical Properties of Melt-spun Mg-Ni-La alloys

Amorphous and nanocrystalline Mg-based alloys (Mg70.6Ni29.4)100-xLax (x=2, 5, 8, 10, 15mol%) were prepared by rapid solidification. The microstructure of the as-quenched ribbons and the electrochemical properties of these alloys with different La content were characterized and measured. The experime...

Full description

Saved in:
Bibliographic Details
Published in:International journal of electrochemical science 2011-12, Vol.6 (12), p.6200-6208
Main Authors: Lin-jun, Huang, Yan-xin, Wang, Jian-guo, Tang, Jing-quan, Liu, Yao, Wang, Ji-xian, Liu, Zhen, Huang
Format: Article
Language:English
Subjects:
Amorphous alloy
Electrochemical properties
Mg-Ni-La hydrogen-storage alloy
microstructure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Amorphous and nanocrystalline Mg-based alloys (Mg70.6Ni29.4)100-xLax (x=2, 5, 8, 10, 15mol%) were prepared by rapid solidification. The microstructure of the as-quenched ribbons and the electrochemical properties of these alloys with different La content were characterized and measured. The experimental results showed that the degree of short-range order increased with increasing La atomic content. The highest discharge capacity reached more than 564.2 mAhg−1 for (Mg70.6Ni29.4)92La8 samples. It’s capacity conservation rate was 85% after 10 cycles. The discharge capacities reached more than 300 mAhg−1 for (Mg70.6Ni29.4)98La2 and (Mg70.6Ni29.4)98La2 amples. There discharge-capacity were improved greatly compared with the Mg2Ni crystalline alloys. It was conformed that the increase of discharge capacities is not only a function of the sample composition but strongly influenced by the amorphous phase proportion in the alloys.
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)19674-X