Effect of Fe additive on the hydrogenation-dehydrogenation properties of 2LiH + MgB2/2LiBH4 + MgH2 system
- Puszkiel, Julián Atilio
- Gennari, Fabiana Cristina
- Arneodo Larochette, Pierre Paul
- Ramallo Lopez, Jose Martin
- Vainio, U.
- Karimi, F.
- Pranzas, P. K.
- Troiani, Horacio Esteban
- Pistidda, C.
- Jepsen, J.
- Tolkiehn, M.
- Welter, E.
- Klassen, T.
- Bellosta Von Colbe, J.
- Dornheim, M.
DOIAbstract
Lithium reactive hydride composite 2LiBH4 + MgH2 (Li-RHC) has been lately investigated owing to its potential as hydrogen storage medium for mobile applications. However, the main problem associated with this material is its sluggish kinetic behavior. Thus, aiming to improve the kinetic properties, in the present work the effect of the addition of Fe to Li-RHC is investigated. The addition of Fe lowers the starting decomposition temperature of Li-RHC about 30 °C and leads to a considerably faster isothermal dehydrogenation rate during the first hydrogen sorption cycle. Upon hydrogenation, MgH2 and LiBH4 are formed whereas Fe appears not to take part in any reaction. Upon the first dehydrogenation, the formation of nanocrystalline, well dist...
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