Abstract: | Unsuccessful attempts were made to prepare LixMo6S7.7 by direct ionic exchange of Cu2Mo6S7.7 using aqueous, acetontrille, and molten salt solvents. Li2.3Mo6S7.7 was eventually prepared by lithiation of Mo6S8 using n-butyl lithium reagent. The mass transport properties of hot-pressed samples were measured using a four-point dc technique and the following values at 415°C for the lithium ionic conductivity, .4×10−4 (ohms cm−1) and lithium chemical diffusion coefficient 3.5×10−7 cm2/s, were derived. A possible explanation for the relatively low lithium ion mobility in Li2.3Mo6S7.7 is discussed. |