CHEMICAL LITHIUM INSERTION TO POTASSIUM MOLYBDENUM BRONZE

The chemical lithium insertion to K0.30MoO3 powder was investigated in nitrogen atmosphere. Changes in X-ray diffraction patterns, the dependence of the open-circuit potential on x = (Li/Mo) ratio and other electrochemical data showed that chemical lithiation of K0.30MoO3 occurred in three different composition regions and that thermodynamic properties of LixK0.30MoO3 were controlled by structural changes derived from interaction of lithium ions in host matrix. Especially, the solid solution of Li-K0.30MoO3 existed as a single phase within a stoichiometric range of 0<x<0.35.