POSITIVE ELECTRODE ACTIVE MATERIAL AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a low-cost and high-capacity non-aqueous electrolyte battery. SOLUTION: The non-aqueous electrolyte secondary battery comprises a negative electrode mainly using a material capable of storing and releasing at least lithium ions or metallic lithium, as a negative electrode active material, a separator, a positive electrode and an electrolyte. An active material for the positive electrode is oxide containing nickel and manganese elements, and the percentage contents of the nickel and manganese elements are substantially the same.