Journal
APPLIED PHYSICS LETTERS
Volume 100, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4712053
Keywords
-
Categories
Funding
- Tohoku University
- MEXT, Japan [22740209, 22014001, 21224008, 22244039, GR008]
- JSPS
- Grants-in-Aid for Scientific Research [22014001, 22244039, 22740209, 21224008] Funding Source: KAKEN
Ask authors/readers for more resources
Lattice vibrations from 20 K to room temperature in lithium alanates LiAlH4 and Li3AlH6, which decompose to release hydrogen over 423 K, were investigated by neutron spectroscopy. For both alanates, the overall spectra already start to broaden at 100-150 K with increasing temperature. The spectral lines assigned to the librational (rotational) modes of the polyhedral Al hydrido complexes, [AlH4](-) and [AlH6](3-), exhibit not only broadening but also softening at around 250-300 K. These results suggest that the decomposition stems from low-temperature bulk lattice instability/anharmonicity, in particular, due to the weakening of binding between the complexes and their surroundings. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4712053]
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available