| 摘要 |
PROBLEM TO BE SOLVED: To obtain a non-aqueous electrolyte secondary battery that has a plateau potential in the 4 V region nearly equal to a lithium cobaltate battery and has excellent battery characteristics such as cycle characteristics and high temperature characteristics by providing a positive electrode active substance material having a large discharge capacity. SOLUTION: The non-aqueous electrolyte secondary battery comprises a positive electrode containing a positive electrode active substance made of lithium-contained complex oxide having a layered crystal structure that is expressed by a general formula, Lix Mna Cob Mc O2 (wherein, 0.9<=X<=1.1, 0.45<=a<=0.55, 0.45<=b<=0.55, 0<c<=0.05, 0.9<a+b+c<=1.1, and M is at least one kind selected from Al, Mg, Sn, Ti, Zr), a negative electrode containing a negative electrode active substance that is capable of insertion and desorption of lithium ion, a separator separating these positive electrode and negative electrode, and a non-aqueous electrolyte. |
