Mechanochemically synthesized amorphous and thermally stable xAgI-(100−x)[0.5Ag2O, 0.5MoO3] compositions, with x = 40, 50, 60 or 70, exhibited room-temperature ionic conductivities of 10−2 to 10−3S/cm. The highest conductivity was found for 36h-milled samples which contained 50m/o AgI. This was more than 3 orders of magnitude higher than that of crystalline AgI, at room temperature, and was comparable to that of glassy fast-ionic conductor - of the same composition - prepared via conventional quenching. The samples were stable at up to at least 70C, with ionic transport numbers near to unity. The amorphous samples were also characterized by having a distinct glass transition, as well as an amorphous-to-crystalline transition temperature. The Fourier-transform infra-red spectra confirmed the presence of MoO42− and Mo2O72− groups in ball-milled systems.

Characterization and Electrochemical Cell Characteristics of Mechanochemically Synthesized AgI–Ag2O–MoO3 Amorphous Superionic System. A.Dalvi, K.Shahi: Journal of Physics and Chemistry of Solids, 2003, 64[5], 813-9