Investigation on the Properties of the Mixture Consisting of Mg(NH₂)₂, LiH, and LiBH₄ as a Hydrogen Storage Material

A maximum hydrogen amount of 9.1 wt % was obtained at 300 °C from the 1Mg(NH 2 ) 2 −2LiH−0.67LiBH 4 system. Various analyses and thermodynamic calculations revealed that the MgH 2 and LiNH 2 can be readily converted to Mg(NH 2 ) 2 and LiH at 120 °C in the presence of LiBH 4 . A comparison between the sample 1Mg(NH 2 ) 2 −2LiH−1LiBH 4 and the ternary mixture 1MgH 2 −2LiNH 2 −1LiBH 4 indicated that both samples behave very similarly in hydrogen desorption, thermal effects, and chemical changes during dehydrogenation.