Abstract

The hydrogen storage properties of a destabilized ${\text{LiBH}}_4$ / ${\text{CaH}}_2$ system ball-milled with ${\text{TiCl}}_3$ , ${\text{TiF}}_3$ , and ${\text{TiO}}_2$ additives have been investigated. It is found that the system with ${\text{TiCl}}_3$ additive has a lower dehydrogenation temperature than the ones with other additives. Further study shows that a higher amount of ${\text{TiCl}}_3$ is more effective in reducing the desorption temperature of the ${\text{LiBH}}_4$ / ${\text{CaH}}_2$ system, since it leads to a lower activation energy of dehydrogenation. The activations energies for mixtures containing 4, 10, and 25 mol% of ${\text{TiCl}}_3$ are 141, 126, and 110 kJ/mol, respectively. However, the benefits of higher amounts of ${\text{TiCl}}_3$ are offset by a larger reduction in hydrogen capacity of the mixtures.

Authors:

Yang, Hongwei ^[1]; Ibikunle, Adeola ^[1]; Goudy, Andrew J. ^[1]

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+ Show Author Affiliations

1. Department of Chemistry, Delaware State University, Dover, DE 19901, USA

Publication Date:

2010-01-01

Sponsoring Org.:

USDOE

OSTI Identifier:

1198276

Resource Type:

Published Article

Journal Name:

Advances in Materials Science and Engineering

Additional Journal Information:

Journal Name: Advances in Materials Science and Engineering Journal Volume: 2010; Journal ID: ISSN 1687-8434

Publisher:

Hindawi Publishing Corporation

Country of Publication:

Egypt

Language:

English