Inorganic solid Li ion conductors: An overview

This short review presents the state-of-the-art knowledge on crystalline, composite and amorphous inorganic solid lithium ion conductors, which are of interest as potential solid electrolytes in lithium batteries and might replace the currently used polymeric lithium ion conductors. The discussion of crystalline Li ion conductors includes perovskite-type Lithium Lanthanum Titanates, NASICON-type, LiSICON- and Thio-LiSICON-type Li ion conductors, as well as garnet-type Li ion conducting oxides. The part on composite Li ion conductors discusses materials containing oxides and mesoporous oxides. In the amorphous Li ion conductor part, mechanical attrition of Li compounds, oxide and sulfide-based glasses as well as LIPON and related systems are presented.