Lithium ion conductive glass-ceramics

Abstract

There are provided glass-ceramics having a high lithium ion conductivity which include in mol % ______________________________________ P.sub.2 O.sub.5 38-40% TiO.sub.2 25-45% M.sub.2 O.sub.3 (where M is Al or Ga) 5-15% Li.sub.2 O 10-20% ______________________________________ and contain Li.sub.1+X (Al, Ga).sub.X Ti.sub.2-X (PO.sub.4).sub.3 (where X is 0 to 0.8) as a main crystal phases. There are also provided glass-ceramics having a high lithium ion conductivity which include in mol % ______________________________________ P.sub.2 O.sub.5 26-40% SiO.sub.2 0.5-12% TiO.sub.2 30-45% M.sub.2 O.sub.3 (where M is Al or Ga) 5-10% Li.sub.2 O 10-18% ______________________________________ and contain Li.sub.1+X+Y M.sub.X Ti.sub.2-X Si.sub.Y P.sub.3-Y O.sub.12 (where 0<X.ltoreq.0.4 and 0<Y.ltoreq.0.6) as a main crystal phase.

Dependencies are inferred from the claim text.