Reversible F-ion intercalation host for use in room temperature F-ion batteries

Abstract

A fluoride composition configured for fluoride ion intercalation, the fluoride composition comprising one of: a) a defect fluoride pyrochlore composition of the general formula AMIIMIIIF6; or b) a fluoride weberite composition of the general formula A1-2MM′ F6-7, where the oxidation state of M and M′ are such that the composition is charge balanced. An F-ion energy storage cell comprising: a first electrode configured for fluoride ion intercalation, where the first electrode comprises one of: a defect fluoride pyrochlore composition, or a fluoride weberite composition; a second electrode; an electrolyte; and a separator. A method of manufacturing an F-ion energy storage cell comprising forming an F-ion composition configured for fluoride ion intercalation; forming a first electrode from the F-ion composition; and forming a cell having the first electrode, a second electrode, a separator, and an electrolyte.

Dependencies are inferred from the claim text.