A positive electrode, and a manufacturing method thereof for a lithium ion secondary battery

High discharge capacity, excellent adhesion to the cathode active material and a conductive material and the positive electrode current collector, even after repeated charge-discharge cycles excellent does not easily deteriorate cycle characteristics, to provide a positive electrode for a lithium ion secondary battery. The positive electrode active material, a binder, and a positive electrode active material layer containing a conductive material is a positive electrode for a lithium ion secondary battery is formed on the surface of the positive electrode current collector, the positive electrode active material, and Li element, Ni, Co, and at least one transition metal element selected from the group consisting of Mn (where the molar amount of Li element is 1.2 times greater than the total molar amount of the transition metal elements.) lithium include-containing composite oxide, the binder is composed of a copolymer having at least one repeating unit derived from the monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, fluorine a positive electrode for a lithium ion secondary battery comprising a fluorine-containing rubber content of 50 to 76 wt%.