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Hydrogen absorption kinetics in powdered V+80 wt.% LaNi5 composite

DSpace at IIT Bombay

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Title Hydrogen absorption kinetics in powdered V+80 wt.% LaNi5 composite
 
Creator KUMAR, S
TIRPUDE, A
TAXAK, M
KRISHNAMURTHY, N
 
Subject Ball-milling
H absorption kinetics
LaNi5
Vanadium
Composite
STORAGE MATERIALS
SOLID-SOLUTION
METAL
HYDRIDES
ALLOYS
SYSTEM
 
Description The hydrogen absorption behavior of V + 80 wt.% LaNi5 composite, LaNi5 and V has been investigated. The LaNi5-V composite was prepared by high energy ball-milling technique using high pure vanadium and LaNi5 powder. Lattice expansion of the composite has been observed in X-ray analysis which indicates the solid solution formation. Presence of free V and traces of V2O5 phase were also observed in the composite. The hydrogen absorption capacity and absorption kinetics of the composite showed improvement as compared to LaNi5. The improved kinetics of the composite has been co-related to the change in lattices parameter, Fermi energy level and catalytic property of vanadium. Integrity of the composite has found to be effective even after 20 numbers of hydriding and dehydriding cycles due to the presence of vanadium. (C) 2013 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-10-16T05:33:35Z
2014-10-16T05:33:35Z
2013
 
Type Article
 
Identifier JOURNAL OF ALLOYS AND COMPOUNDS, 580S179-S182
0925-8388
1873-4669
http://dx.doi.org/10.1016/j.jallcom.2013.03.001
http://dspace.library.iitb.ac.in/jspui/handle/100/15347
 
Language en