Enhanced hydrogen uptake/release in 2LiH-MgB2 composite with titanium additives

► LiH-MgB2-X (X = TiF4;TiO2;TiN; TiC) composites were kinetically improved. ► Magnesium was detected as an intermediate phase during hydrogen desorption. ► Only for LiH-MgB2-TiF4 the formation of TiB2 and LiF was confirmed. ► TiO2, TiN and TiC could be the catalysts under hydrogen sorption.