Lithium niobate and method for producing the same

Abstract

A lithium niobate with high lithium ion conductivity. Disclosed is a method for producing a lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles, the method comprising: preparing a solution containing niobium ions and lithium ions, drying the solution to obtain a lithium niobate precursor, and heating the lithium niobate precursor at a temperature of from 250° C. to 300° C. for a heating time of more than 0 minute and 10 minutes or less.

1 . A method for producing a lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles,
 the method comprising:   preparing a solution containing niobium ions and lithium ions,   drying the solution to obtain a lithium niobate precursor, and   heating the lithium niobate precursor at a temperature of from 250° C. to 300° C. for a heating time of more than 0 minute and 10 minutes or less.   
     
     
         2 . A lithium niobate for use in a covering layer covering at least part of a surface of cathode active material particles,
 wherein an A/B ratio value between a first peak intensity value A at a diffraction angle (2θ) of 23.7°±0.5° and a second peak intensity value B at a diffraction angle (2θ) of 53.2°±0.5°, is 1.96 or more and 2.54 or less, and the peak intensities are observed by X-ray diffraction (XRD) measurement using CuKα radiation.