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Title: Improvement of hydrogen storage properties of the Li-Mg-N-H system by addition of LiBH4
Authors: Hu, J. 
Liu, Y. 
Wu, G. 
Xiong, Z. 
Chua, Y.S.
Chen, P. 
Issue Date: 8-Jul-2008
Citation: Hu, J., Liu, Y., Wu, G., Xiong, Z., Chua, Y.S., Chen, P. (2008-07-08). Improvement of hydrogen storage properties of the Li-Mg-N-H system by addition of LiBH4. Chemistry of Materials 20 (13) : 4398-4402. ScholarBank@NUS Repository.
Abstract: Significant improvements in the hydrogen desorption/absorption properties of the Li-Mg-N-H system have been achieved by adding a small amount of LiBH 4. The onset as well as the peak temperatures of hydrogen desorption shift to lower temperatures. Five wt % of hydrogen can be fully desorbed at 140 °C and reabsorbed at 100°C. The kinetics of hydrogen desorption as well as absorption were found to be 3 times as fast as the pristine system. Thermodynamic analyses show that the temperature for equilibrium desorption pressure at 1 bar was 70°C, which is about 20°C lower than the pristine system. The enhancement in the hydrogen sorption properties was attributed to the weakening of N-H bonding in the metal amide molecules. © 2008 American Chemical Society.
Source Title: Chemistry of Materials
ISSN: 08974756
DOI: 10.1021/cm800584x
Appears in Collections:Staff Publications

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