NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

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Provided is a nonaqueous electrolyte secondary battery which achieves a high capacity and a long service life by being suppressed in structural change of a positive electrode active material at high voltage. A nonaqueous electrolyte secondary battery which is provided with : a positive electrode that comprises a positive electrode active material which absorbs and desorbs lithium ions; a negative electrode that comprises a negative electrode active material which absorbs and desorbs lithium ions; and a nonaqueous electrolyte. This nonaqueous electrolyte secondary battery is characterized in that : the positive electrode active material is a lithium-cobalt composite oxide that contains nickel, manganese and aluminum; and a rare earth compound or oxide adheres to a part of the surface of the positive electrode active material.