SECONDARY BATTERY HAVING JELLY ROLL-TYPE ELECTRODE ASSEMBLY HAVING INTERMITTENT BLANK PORTION FORMED ON POSITIVE ELECTRODE COLLECTOR

摘要

The present disclosure provides a secondary battery including an electrode assembly in which a positive electrode including a positive electrode active material coating region on at least one surface of a positive electrode current collector and a negative electrode including a negative electrode active material coating region on at least one surface of a negative electrode current collector are wound in a jellyroll structure such that the positive electrode and the negative electrode face each other with a separator interposed between, and a positive electrode tab and a negative electrode tab electrically connected to the positive electrode current collector and the negative electrode current collector, respectively, and standing out from the electrode assembly, wherein the positive electrode current collector has an intermittent non-coating region where the positive electrode active material coating region is absent at a part of a region corresponding to a curved surface when wound.