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Journal
2011 | 9 | 6 | 1133-1142
Article title

The structural, magnetic, hydrogenation and electrode properties of REMg2Cu9−xNix alloys (RE=La, Pr,Tb)

Content
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EN
Abstracts
EN
The LaMg2Cu9, PrMg2Cu9, LaMg2Cu4Ni5, PrMg2Cu4Ni5 and TbMg2Cu6Ni3 alloys were prepared for the investigations of crystal structure, magnetic and hydrogen storage properties. The magnetic properties of several REMg2Cu9−xNix compounds have been studied up to 9 T and from 2 to 300 K. Tb compounds show a ferrimagnetic (with Ni) or antiferromagnetic (without Ni) behaviour, which can be attributed to the Tb magnetic structure. At high temperature a paramagnetic Curie Weiss behaviour is observed and the effective moment corresponds to that of Tb. A magnetic contribution of Pr moment is observed in both Pr compounds, with larger magnetization for PrMg2Cu4Ni5 and a transition at 3 K. The hydrogen absorption occurs at 95 bar for LaMg2Cu9 (3 H f.u.−1) and above 2 bars for LaMg2Cu4Ni5 (1.6 H f.u.−1). The effect of Cu-Ni substitution on the electrochemical properties of LaMg2M9 ternary alloys was investigated leading to maximum discharge capacity of 250–310 mAh g−1. [...]
Publisher

Journal
Year
Volume
9
Issue
6
Pages
1133-1142
Physical description
Dates
published
1 - 12 - 2011
online
27 - 9 - 2011
Contributors
  • Institute of Chemistry, Environment Protection and Biotechnology, Jan Dlugosz University, 42200, Czestochowa, Poland, vpavlyuk2002@yahoo.com
  • Institute of Chemistry, Environment Protection and Biotechnology, Jan Dlugosz University, 42200, Czestochowa, Poland
  • Institute of Chemistry, Environment Protection and Biotechnology, Jan Dlugosz University, 42200, Czestochowa, Poland
  • Institut de Chimie et des Matériaux de Paris-Est, Chimie Métallurgique des Terres Rares, CNRS and UPEC, 94320, Thiais Cedex, France
  • Institut de Chimie et des Matériaux de Paris-Est, Chimie Métallurgique des Terres Rares, CNRS and UPEC, 94320, Thiais Cedex, France
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11532-011-0099-2
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