Ion conductor, composite, sheet, electrode, separator, and power storage device

Abstract

Provided are an ion conductor whose lithium ion conducting property can be controlled, a composite, a sheet, an electrode, a separator, and a power storage device. The ion conductor contains a solid electrolyte which has a garnet-type crystal structure containing Li, La, Zr, and O, wherein lithium carbonate is partially present on a surface of the solid electrolyte. The composite contains the ion conductor and an ionic liquid containing a lithium salt dissolved therein, wherein the ionic liquid contains a fluorine-based anion, and, in a film which covers the surface of the solid electrolyte, the relative concentration ratio of a fluoride to carbonate ions is 0.1 or greater. The power storage device includes the ion conductor.

Dependencies are inferred from the claim text.