Li 6 PS 5 Cl, Li 3 PS 4 , and Li 10 Ge(PS 6 ) 2 (LGPS)) at low potentials, for example, when in contact with Li-metal, it is important to analyze the reactivity of these binary compounds (i.e., Li 2 S and Li 3 P) with the catholytes of interest. For Li 2 S, the lowest and the highest reaction enthalpies vary between -58 kJ mol -1 and -89 kJ mol -1 for Li 3 YCl 6 and Li 3 InCl 6 , respectively. Amongst the anolytes studied here, we find Li 3 P to be the most reactive; the highest reactivity is observed when Li 3 P is paired with Li 3 InCl 6 (-236 kJ mol -1 ), and the least reactivity is observed when it is paired with Li 3 YCl 6 (-128 kJ mol -1 ).