MANGANESE OXIDE, METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING LITHIUM MANGANESE BASED COMPOSITE OXIDE USING MANGANESE OXIDE

摘要

PROBLEM TO BE SOLVED: To provide a manganese oxide which gives a lithium manganese based composite oxide excellent as a positive electrode material for a lithium secondary battery, and to provide a method for producing the manganese oxide, and to provide a lithium manganese based composite oxide using the manganese oxide.SOLUTION: The manganese oxide has a 20% or lower pore volume fraction of pores having a diameter of 10 μm or greater as measured by a mercury intrusion technique, and has a tap density of 1.6 g/cmor higher. Further, a method for producing the manganese oxide and a method for producing the lithium manganese based composite oxide using the manganese oxide are also provided.