Effects of Ti-Based Additives on the Hydrogen Storage Properties of a LiBH4CaH2 Destabilized System

الملخص EN

The hydrogen storage properties of a destabilized LiBH4/CaH2 system ball-milled with TiCl3, TiF3, and TiO2 additives have been investigated.

It is found that the system with TiCl3 additive has a lower dehydrogenation temperature than the ones with other additives.

Further study shows that a higher amount of TiCl3 is more effective in reducing the desorption temperature of the LiBH4/CaH2 system, since it leads to a lower activation energy of dehydrogenation.

The activations energies for mixtures containing 4, 10, and 25 mol% of TiCl3 are 141, 126, and 110 kJ/mol, respectively.

However, the benefits of higher amounts of TiCl3 are offset by a larger reduction in hydrogen capacity of the mixtures.