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The effect of heating rate on the reversible hydrogen storage based on reactions of Li3AlH6 with LiNH2

Lu, Jun and Fang, Zhigang Zak and Choi, Young Joon and Sohn, Hong Yong and Kim, Chul and Bowman, Robert C., Jr. and Hwang, Son-Jong (2008) The effect of heating rate on the reversible hydrogen storage based on reactions of Li3AlH6 with LiNH2. Journal of Power Sources, 185 (2). pp. 1354-1358. ISSN 0378-7753. doi:10.1016/j.jpowsour.2008.07.040.

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Reversible dehydrogenation and hydrogenation reactions have been reported for a number of reactions based on lithium alanate and lithium amide materials. The dehydrogenation and hydrogenation reactions involving these materials are, however, usually very complex. Significant discrepancies exist among different studies published in literature. Understanding the reaction mechanism and the dependence of the reaction pathway on material preparation processes and processing parameters is critical. In this paper, the hydrogenation reactions of the mixture of 3Li2NH/Al/4 wt%TiCl3 were investigated as a function of the heating rate. The hydrogenated products were characterized by means of TGA, XRD and solid-state NMR. These new results showed that the re-formation of Li3AlH6 depends strongly on the heating rate during the hydrogenation process. The dehydrogenation and rehydrogenation reaction pathways and possible mechanisms of the combined system are, however, still under investigation.

Item Type:Article
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Bowman, Robert C., Jr.0000-0002-2114-1713
Hwang, Son-Jong0000-0002-3210-466X
Additional Information:© 2008 Elsevier. Received 15 May 2008; revised 10 July 2008; accepted 10 July 2008. Available online 25 July 2008. This research was supported by the U.S. Department of Energy (DOE) under contract numbers DE-FC36-05GO15069 (U. Utah) and DE-AI-01-06EE11105 (JPL) and was also partially performed at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautical and Space Administration (NASA). The NMR facility at Caltech was supported by the National Science Foundation (NSF) under Grant Number 9724240 and partially supported by the MRSEC Program of the NSF under award number DMR-0520565. We thank W. Luo and J. W. Reiter for providing several Li–Mg–N–H reference materials.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FC36-05GO15069
Department of Energy (DOE)DE-AI-01-06EE11105
Subject Keywords:Hydrogenation; Dehydrogenation; Heating rate; Alanate; Amide
Issue or Number:2
Record Number:CaltechAUTHORS:LUJjps08
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12921
Deposited By: Archive Administrator
Deposited On:11 Jan 2009 04:11
Last Modified:08 Nov 2021 22:33

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