Fast Li-ion conducting glass-ceramics were prepared from the pseudo-binary system, 2[Li1+xTi2SixP3-xO12]-AlPO4. The major phase which was present was LiTi2P3O12, in which Ti4+ and P5+ ions were partially replaced by Al3+ and Si4+ ions, respectively. It was found that increasing the x-value resulted in a considerable enhancement of the conductivity. Room-temperature conductivities above 0.001S/cm were measured over a wide range of compositions.

J.Fu: Journal of the American Ceramic Society, 1997, 80[7], 1901-3