Glass formation and ion conduction in the CuCl–Cu2MoO4–Cu3PO4 system

Abstract

Copper(I) ion-conducting glasses have been obtained over a wide composition range in the system CuCl–Cu₂MoO₄–Cu₃PO₄ as an island in the composition triangle, although the glass-forming region of the CuCl-containing system was narrower than those of the systems CuBr–Cu₂MoO₄–Cu₃PO₄ and Cul–Cu₂MoO₄–Cu₃PO₄. Infrared spectra showed that those glasses were composed of Cu⁺ ions, halide ions, X^–(X = Cl, Br, I), ortho-molybdate anions MoO^2–₄ and orthophosphate anions PO^3–₄ only, as expected from their chemical composition. The conductivities of the CuCl-containing glasses were in the range 10⁰–10^–4S m^–1 at room temperature, and these high ion conductivities were nearly the same (very slightly lower) as those of the Cul-and CuBr-containing glasses with analogous compositions.