NOVELTY - A positive electrode (1) comprises wound electrode component (6) obtained by winding a laminate of a positive electrode, a negative electrode (2) and a separator (3) into a coil shape, and which comprises a collector containing metal and positive electrode mixture layers that are formed on both surfaces of the collector and contain positive electrode active material, conductive assistant and binder. The collector has thickness of 11 mu m or less and tensile strength of 2.5 N/mm or more. The positive electrode mixture layers contain vinylidene fluoride-chlorotrifluoroethylene copolymer.    USE - Positive electrode is used for nonaqueous electrolyte secondary battery (claimed) for mobile telephone, notebook computer and electric vehicle.    ADVANTAGE - The positive electrode provides nonaqueous electrolyte secondary battery having high capacity and charging/discharging characteristics, with high productivity.    DETAILED DESCRIPTION - A positive electrode comprises a wound electrode component obtained by winding a laminate of a positive electrode, a negative electrode and a separator into a coil shape and flattening the wound electrode component to have a flattened cross-section and has an upper limit for charging voltage of 4.3 V or more, and which comprises a collector containing metal and positive electrode mixture layers that are formed on both surfaces of the collector and contain a positive electrode active material, a conductive assistant and a binder. The collector has a thickness of 11 mu m or less and a tensile strength of 2.5 N/mm or more. The positive electrode mixture layers contain vinylidene fluoride-chlorotrifluoroethylene copolymer. An INDEPENDENT CLAIM is included for nonaqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of nonaqueous electrolyte secondary battery.    Positive electrode (1)    Negative electrode (2)    Separator (3)    Insulator (5)    Wound electrode component (6)