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Title: Thermodynamic and kinetic investigations of the hydrogen storage in the Li-Mg-N-H system
Authors: Xiong, Z. 
Hu, J. 
Wu, G. 
Chen, P. 
Luo, W.
Gross, K.
Wang, J.
Keywords: Activation energy
Hydrogen storage
Ternary imide
Issue Date: 2-Aug-2005
Citation: Xiong, Z., Hu, J., Wu, G., Chen, P., Luo, W., Gross, K., Wang, J. (2005-08-02). Thermodynamic and kinetic investigations of the hydrogen storage in the Li-Mg-N-H system. Journal of Alloys and Compounds 398 (1-2) : 235-239. ScholarBank@NUS Repository.
Abstract: Hydrogen desorption from the mixture of Mg(NH2)2 and 2LiH presents two pressure-dependent segments at a given temperature - ∼2/3 of the hydrogen is released at relatively higher pressures and forms a pressure plateau and the other 1/3 is desorbed at lower pressures. The overall reaction heat measured in a differential scanning calorimeter is 44.1 kJ/mol H 2, while the heat-of-desorption of H2 in the higher pressure plateau is about 38.9 kJ/mol H2, a favorable thermodynamics for PEM Fuel Cell application. However, the relatively higher activation energy (Ea = 102 kJ/mol) sets a kinetic barrier. © 2005 Elsevier B.V. All rights reserved.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
DOI: 10.1016/j.jallcom.2005.02.010
Appears in Collections:Staff Publications

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