| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1283663 | International Journal of Hydrogen Energy | 2008 | 6 Pages |
Abstract
NaAlH4 has been homogeneously mixed with micron- and nano-sized TiO2 powders by high-energy ball milling and their sorption properties have been investigated during hydrogen absorption/desorption cycles. NaAlH4 with TiO2 nanopowder exhibits as good desorption kinetics as NaAlH4 with TiCl3, whereas poor desorption kinetics is observed with micron-sized TiO2 powder. NaAlH4 with TiO2 nanopowder also provides improved cyclic property compared to NaAlH4 with TiCl3 in terms of both desorption rate and hydrogen capacity. X-ray diffraction analysis shows that micron-sized TiO2 remains stable with NaAlH4 after milling, although thermodynamic calculation predicts that TiO2 reacts with NaAlH4.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Gil-Jae Lee, Jae-Hyeok Shim, Young Whan Cho, Kyung Sub Lee,