Preparation of cubic Na3PS4 by liquid-phase shaking in methyl acetate medium

摘要

Cubic Na PS (c-Na PS ), a high temperature phase of Na PS , is successfully prepared by liquid-phase shaking from Na S and P S in methyl acetate medium. The effects of the amount of solvents, Na S and heat treatment on the formation of c-Na PS are carefully investigated. In addition to c-Na PS , an unknown phase is also detected in the sample containing an excess amount of Na S in the starting materials mixture.