Positive Electrode And Lithium Secondary Battery Comprising Same

Abstract: The present invention provides a positive electrode for a lithium secondary battery, the positive electrode comprising: a positive electrode current collector; and a positive electrode active material layer positioned on the positive electrode current collector, wherein the positive electrode current collector comprises, on at least one surface thereof, a coated portion where the positive electrode active material layer is formed, and a non-coated portion where the positive electrode active material layer is not formed on the positive electrode current collector, and the positive electrode current collector satisfies formula (1) below. Formula (1) : P = [(a1/a2)×b]/0.05c. In formula (1): P is the rolling density (g/cc) of the positive electrode; a1 is D50 (µm) of positive electrode active material particles contained in the positive electrode active material layer; a2 is Dmax (µm) of the positive electrode active material particles contained in the positive electrode active material layer; b is the elongation (%) at 25°C of the positive electrode current collector; and c is the thickness (µm) of the positive electrode current collector.

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