Cathode material comprising iron hydroxy fluoride

Abstract

The present invention relates to a method of producing a cathode active material, comprising at least partially dissolving iron fluoride trihydrate (IFH) in a polar solvent, thereby obtaining a solution; adding water to the solution, thereby precipitating a compound comprising pyrochlore iron hydroxy-fluoride hydrate (Pyr-IHFH); separating the precipitated compound from the solution; and heating the separated, precipitated compound to a temperature between 50 and 400° C., thereby obtaining the cathode active material comprising pyrochlore iron hydroxy-fluoride (Pyr-IHF), wherein adding water to the solution converts IFH to Pyr-IHFH. The invention further relates to a cathode active material comprising Pyr-IHF, a cathode comprising the cathode active material and a battery comprising the cathode.

Dependencies are inferred from the claim text.