Method for producing layered rock-salt type lithium ferrite by solvothermal ion exchange method

摘要

PROBLEM TO BE SOLVED: To provide a new method capable of mass producing a laminar rock salt type LiFeO2 as a low-cost anode material for a lithium secondary battery. SOLUTION: This method for producing a laminar rock salt type LiFeO2 comprises (1) subjecting -FeOOH to hydrothermal treatment in an aqueous solution of sodium hydroxide at 130-300 deg.C to give a-NaFeO2 and subjecting the compound to solvothermal treatment with an inorganic lithium salt in a nonaqueous solvent at 130-300 deg.C or (2) directly reacting a sodium compound with a ferric compound to give an -NaFeO2 and subjecting the compound to solvothermal treatment with an inorganic lithium salt dispersed into a nonaqueous solvent at 130-300 deg.C.