Investigation on the Structure and Electrochemical Properties of La-Ce-Mg-Al-Ni Hydrogen Storage Alloy
Joint Authors
Xi, Jianyi
Luo, Yongchun
Shao, Guangjie
Wang, Limin
Qiao, Yuqing
Zhao, Minshou
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-09
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Structure and electrochemical characteristics of La0.96Ce0.04Mg0.15Al0.05Ni2.8 hydrogen storage alloy have been investigated.
X-ray diffraction analyses reveal that the La0.96Ce0.04Mg0.15Al0.05Ni2.8 hydrogen storage alloy consisted of a (La, Mg)Ni3 phase with the rhombohedral PuNi3-type structure and a LaNi5 phase with the hexagonal CaCu5-type structure.
TEM shows that the alloy is multicrystal with a lattice space 0.187 nm.
EDS analyse shows that the content of Mg is 3.48% (atom) which coincide well with the designed composition of the electrode alloy.
Electrochemical investigations show that the maximum discharge capacity of the alloy electrode is 325 mAh g−1.
The alloy electrode has higher discharge capacity within the discharge current density span from 60 mA g−1 to 300 mA g−1.
Electrochemical impedance spectroscopy measurements indicate that the charge transfer resistance RT on the alloy electrode surface and the calculated exchange current density I0 are 0.135 Ω and 1298 mA g−1, respectively; the better eletrochemical reaction kinetic of the alloy electrode may be responsible for the better high-rate dischargeability.
American Psychological Association (APA)
Qiao, Yuqing& Xi, Jianyi& Zhao, Minshou& Shao, Guangjie& Luo, Yongchun& Wang, Limin. 2013. Investigation on the Structure and Electrochemical Properties of La-Ce-Mg-Al-Ni Hydrogen Storage Alloy. Journal of Chemistry،Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-486303
Modern Language Association (MLA)
Qiao, Yuqing…[et al.]. Investigation on the Structure and Electrochemical Properties of La-Ce-Mg-Al-Ni Hydrogen Storage Alloy. Journal of Chemistry No. 2013 (2013), pp.1-6.
https://search.emarefa.net/detail/BIM-486303
American Medical Association (AMA)
Qiao, Yuqing& Xi, Jianyi& Zhao, Minshou& Shao, Guangjie& Luo, Yongchun& Wang, Limin. Investigation on the Structure and Electrochemical Properties of La-Ce-Mg-Al-Ni Hydrogen Storage Alloy. Journal of Chemistry. 2013. Vol. 2013, no. 2013, pp.1-6.
https://search.emarefa.net/detail/BIM-486303
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486303