ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING SAME

An electrode assembly, which is provided as a winding type electrode assembly, according to the present invention comprises: a positive electrode comprising a positive electrode active material portion that is an area, on which a positive electrode active material is stacked, and a positive electrode non-coating portion that is an area, on which the positive electrode active material is not stacked, on a positive electrode collector; a positive electrode tab provided on the positive electrode non-coating portion; a negative electrode comprising a negative electrode active material portion that is an area, on which a negative electrode active material is stacked, and a negative electrode non-coating portion that is an area, on which the negative electrode active material is not stacked, on a negative electrode collector; a negative electrode tab provided on the negative electrode non-coating portion; and a separator configured to insulate the positive electrode from the negative electrode, wherein the negative electrode non-coating portion comprises a core-side negative electrode non-coating portion disposed at a core when the positive electrode, the negative electrode, and the separator are wound, the negative electrode tab is disposed on one surface, which is a side of the positive electrode, of both surfaces of the core-side negative electrode non-coating portion, and a protective tape is attached to the other surface of the core-side negative electrode non-coating portion.