“…In order to improve the thermodynamic properties of binary Li-N-H system, Li was compositionally substituted by other elements, and several types of ternary or multinary metal-N-H systems (e.g. Li-Mg-N-H [5][6][7][8][9], Li-Ca-N-H [10,11], Li-Al-N-H [12][13][14], Li-B-N-H [12,15], Li-Co-N-H [16] and Li-Mg-Al-N-H [17,18]) were developed.…”