Method of making lithium lanthanum zirconium oxide films and solid-state lithium-based batteries containing the same

Abstract

Methods of making a lithium lanthanum zirconium oxide (LLZO) thin film and a solid-state battery cell are disclosed. The method of making the LLZO thin film includes forming a LLZO sol and/or gel from a lithium precursor, a lanthanum precursor, a zirconium precursor, one or more solvents, water, and an optional dopant, and converting the LLZO sol and/or gel to the LLZO thin film. The method of making the solid-state battery cell includes forming an electrode on an electrically conductive metal-containing substrate, forming a LLZO electrolyte on the electrode using the method of making the LLZO thin film, and depositing a counter-electrode or counter-electrode current collector on the LLZO thin film. A solid-state battery cell having a LLZO electrolyte is also disclosed.

Dependencies are inferred from the claim text.