Please use this identifier to cite or link to this item:
Title: Improvement of the hydrogen-storage performances of Li-Mg-N-H system
Authors: Liu, Y. 
Hu, J.J. 
Xiong, Z. 
Wu, G. 
Chen, P. 
Issue Date: May-2007
Citation: Liu, Y., Hu, J.J., Xiong, Z., Wu, G., Chen, P. (2007-05). Improvement of the hydrogen-storage performances of Li-Mg-N-H system. Journal of Materials Research 22 (5) : 1339-1345. ScholarBank@NUS Repository.
Abstract: Li2MgN2H2 can reversibly store more than 5.5 wt% hydrogen. However, the high activation energy of hydrogen desorption poses a kinetic barrier for low-temperature operation. In this work, the composition of the Li-Mg-N-H system has been modified by the partial substitution of Mg or Li by Na. The changes in structure and hydrogen absorption/desorption kinetics have been investigated. It was found that the peak temperature for hydrogen desorption was decreased by ∼10 °C, and that the hydrogen absorption/desorption isotherms were also significantly changed. Furthermore, the activation energy calculated by the Kissinger's approach was reduced after the substitution of Mg or Li by Na. In addition, the different dehydrogenation structures were detected at different molar ratios of Mg, Li, and Na. © 2007 Materials Research Society.
Source Title: Journal of Materials Research
ISSN: 08842914
DOI: 10.1557/jmr.2007.0165
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jun 1, 2023


checked on Jun 1, 2023

Page view(s)

checked on May 25, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.