LITHIUM ION SECONDARY BATTERY MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a lithium ion secondary battery efficiently while restricting a cathode paste from becoming thickened with the passage of time.

SOLUTION: The lithium ion secondary battery manufacturing method offered by the present invention includes preparing lithium transition metal oxide containing LiOH outside the composition thereof as a cathode active material. This method further includes: grasping the molar quantity P of LiOH contained per g of the cathode active material; preparing 0.05 mol of tungsten oxide in terms of tungsten atoms per mol of LiOH relative to the molar quantity P of LiOH; and mixing the cathode active material and the tungsten oxide in an organic solvent together with a conductive material and a binder to prepare a cathode paste.

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