Abstract
The effect of the dopant anion on thermodynamic tailoring in TiF(3)- and TiCl(3)-doped Na(3)AlH(6) was investigated by pressure-composition desorption isotherm measurements. It was found that the dissociation pressure of the TiF(3)-doped hydride was substantially higher than that of the TiCl(3)-doped sample. This finding agrees well with the theoretically demonstrated thermodynamic modification arising upon F(-) substitution in the hydride lattice, thus providing direct experimental evidence to support functionality of F(-) anion. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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