METHOD FOR MANUFACTURING ACTIVE MATERIAL, METHOD FOR MANUFACTURING ELECTRODE BODY, AND LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an active material for alleviating interface resistance, a method for manufacturing an electrode body, and a lithium ion secondary battery.

SOLUTION: The method for manufacturing the active material includes a coating process of coating a solvent containing a precursor of lithium niobate on the surface of an ion-conductive matter to make a heat-treated body, and a heat treatment process of heat-treating the heat-treated body made in the above process in an ozone atmosphere of 260°C or more and 300°C or less. The method for manufacturing the electrode body includes a mixing process of mixing a cathode active material manufactured in the method for manufacturing the active material and solid electrolyte containing solid sulfide. The lithium ion secondary battery includes a cathode layer as well as an anode layer containing the electrode body manufactured by the method for manufacturing the above electrode body, and a solid electrolyte layer arranged between the cathode layer and the anode layer.

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