Please use this identifier to cite or link to this item:
|Title:||Reversible hydrogen storage by a Li-AI-N-H complex|
|Authors:||Xiong, Z. |
|Citation:||Xiong, Z., Wu, G., Hu, J., Liu, Y., Chen, P., Luo, W., Wang, J. (2007-05-07). Reversible hydrogen storage by a Li-AI-N-H complex. Advanced Functional Materials 17 (7) : 1137-1142. ScholarBank@NUS Repository. https://doi.org/10.1002/adfm.200600759|
|Abstract:||Stepwise solid-state reaction between LiNH2 and LiAlH 4 at a molar ratio of 2:1 is investigated in this paper. It is observed that approximately four H atoms are evolved from a mixture of LiNH 2-LiAlH4 (2:1) after mechanical ball milling. The transformation of tetrahedral [AlH4]- in LiAlH4 to the octahedral [AlH6]3- in Li3AlH 6 is observed after ball milling LiAlH4 with LiNH 2. Al-N bonding is identified by using solid-state 27Al nuclear magnetic resonance (NMR) measurements. The NMR data, together with the results of X-ray diffraction and Fourier transform IR measurements, indicate that a Li-Al-N-H intermediate with the chemical composition of Li 3AlN2H4 forms after ball milling. Heating the post-milled sample to 500°C results in the liberation of an additional four H atoms and the formation of Li3AlN2. More than 5 wt % hydrogen can be reversibly stored by Li3AlN2. The hydrogenated sample contains LiNH2, LiH, and AlN. The role of AlN in the reversible hydrogen storage over Li-Al-N-H is discussed. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.|
|Source Title:||Advanced Functional Materials|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 12, 2019
WEB OF SCIENCETM
checked on Mar 4, 2019
checked on Mar 15, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.