Ion-conducting glass ceramic having garnet-like crystal structure

Abstract

A glass ceramic containing lithium-ions and having a garnet-like main crystal phase having an amorphous proportion of at least 5% is disclosed. The garnet-like main crystal phase preferably has the chemical formula Li7+x−yMxIIM3−xIIIM2−yIVMyVO12, wherein MII is a bivalent cation, MIII is a trivalent cation, MIV is a tetravalent cation, MV is a pentavalent cation. The glass ceramic is prepared by a melting technology preferably within a Skull crucible and has an ion conductivity of at least 5·10−5 S/cm, preferably of at least 1·10−4 S/cm.

Dependencies are inferred from the claim text.