Lithium secondary battery

A lithium secondary battery, comprising:

• a positive electrode;
• a negative electrode;
• a nonaqueous electrolytic solution;
• and a separator,
• wherein the positive electrode includes a collector and a positive electrode material mixture layer formed on the collector,
• the positive electrode material mixture layer includes a positive active material, a conductive agent, and a binder,
• the positive active material contains a lithium-containing composite oxide containing nickel,
• wherein a molar ratio of a total nickel amount with respect to a total lithium amount contained in the entire positive active material is 0.05 to 1.0, and
• the nonaqueous electrolytic solution contains 0.5 to 5.0 mass % of a phosphonoacetate-based compound represented by the following General Formula (1):
• in the General Formula (1), R1, R2, and R3 independently represent an alkyl group, an alkenyl group, or an alkynyl group having 1 to 12 carbon atoms, which may be substituted by a halogen atom, and “n” represents an integer of 0 to 6.