Please use this identifier to cite or link to this item:
|Title:||Effects of triphenyl phosphate on the hydrogen storage performance of the Mg(NH2)2-2LiH system|
|Source:||Wang, J., Hu, J., Liu, Y., Xiong, Z., Wu, G., Pan, H., Chen, P. (2009). Effects of triphenyl phosphate on the hydrogen storage performance of the Mg(NH2)2-2LiH system. Journal of Materials Chemistry 19 (15) : 2141-2146. ScholarBank@NUS Repository. https://doi.org/10.1039/b812653d|
|Abstract:||Mg(NH2)2-2LiH is an attractive system because of its high reversible hydrogen capacity (∼5.6 wt%) and suitable thermodynamic parameters that allow operation below 100 °C. However, a relatively high kinetic barrier in the hydrogen desorption blocks its application at low temperature. In this work, a small amount of additive, triphenyl phosphate (TPP), was introduced and its effects on hydrogen desorption/absorption in the Mg(NH2)2-2LiH system were studied. Experimental results showed that TPP can prevent aggregation/crystallization during the cycling tests and thus achieve an enhanced kinetic performance. Complete dehydrogenation and hydrogenation can be successfully carried out at temperatures below 150 °C. Moreover, a significant reduction of the entropy change of hydrogen desorption (ΔSdes) was found in the TPP-doped system compared with the pristine Mg(NH2)2-2LiH system, thought to be due to the persistence of amorphous Mg(NH2)2 in the TPP-doped sample during dehydrogenation and hydrogenation cycling, thereby greatly affecting the equilibrium hydrogen pressure. © 2009 The Royal Society of Chemistry.|
|Source Title:||Journal of Materials Chemistry|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 28, 2018
WEB OF SCIENCETM
checked on Feb 19, 2018
checked on Apr 20, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.