Phosphates with various compositions were prepared by sintering ZrLixH2-xP2O8, where x was between 0.5 and 2, at 1000C. The microstructures, crystal phases and electrical properties of the sintered products were examined. It was noted that the Li-ion conducting phase, Li2ZrP2O8, and the insulating phase, ZrP2O7, were the predominant phases in sintered products with x-values greater than 1 and less than 0.8, respectively. The electrical properties varied with changes in the phase ratio, and a microstructure formed which depended upon the Li-ion content. The highest conductivity (6.6 x 10-4S/cm at 200C) was found for a sintered product with x = 1.6.

Electrical Properties of Lithium Zirconium Phosphate Ceramics Prepared from Zr(Li,H)2P2O8•nH2O. S.Nakayama, K.Itoh, S.Kakita, T.Suzuki, M.Sakamoto: Ceramics International, 1999, 25[2], 197-200