The effect of h-BN additive on hydrogen sorption by Ti under mechanical treatment in H2/He flow and on
the thermal stability of Ti-hydride produced during milling were studied using kinetic, structural, microscopic,
and spectroscopic techniques and theoretical first-principles calculations. The results obtained were compared
with the corresponding properties of pure Ti and Ti with graphite additive. Like graphite, hexagonal BN was
found to be an effective additive to improve the hydrogen sorption capacity of Ti. New types of occupation
sites available for hydrogen, very similar to those detected for Ti/C, were observed. These sites are characterized
by a low H2 desorption temperature: 630−670 K instead of ∼1000 K.