Finally we report that LNCl can be synthesized directly via a mechanochemical route without any annealing step. After milling stoichiometric amounts of LiCl and Li3N for 10 h at 600 rpm LNCl was obtained (Figure ) . Samples synthesized in this way are referred to as BM-LNCl. The RT conductivity of BM-LNCl was found to be 0.015 mS cm -1 and is the highest conductivity ever reported for LNCl. The activation energy of this sample is 0.416 ± 0.005 eV. Analogously to LNCl-I-BM, the conductivity of BM-LNCl is reduced to 5•10 -3 mS cm -1 after annealing and the activation energy is increased to 0.466 ± 0.005 eV which are values comparable to well consolidated LNCl-I (Figure ). Electrochemical stability window of LNCl. The anodic limit of LNCl was previously found to be > 2 V vs (Li + /Li). Figure shows the results of our electrochemical stability calculations for LNCl, which