NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME

The present technology relates to a negative electrode for a lithium secondary battery and a method of manufacturing the same, and by controlling a static water contact angle of a surface of a negative electrode current collector and an angle (e.g., a contact angle), which is formed by an end part of a negative electrode mixture layer and the negative electrode current collector, within a specific range by treating the surface of the negative electrode current collector with atmospheric pressure plasma, the adhesion between the negative electrode current collector and the negative electrode mixture layer may be improved, and also, the induction of a reversal of an N/P ratio between a positive electrode and a negative electrode at an end of an electrode assembly and the occurrence of unrolling in the negative electrode mixture layer may be prevented, so that an effect of improving the safety and performance degradation of a lithium secondary battery including the negative electrode is excellent.