POSITIVE ELECTRODE AND LITIUM SECONDARY BATTERY COMPRISING THE SAME

• Main Authors: LEE JONG WON, CHOY SANG HOON, YOO HOUNG SIK, YANG GUI EUM, CHOI HYEON, KIM DONG HYUN
• Format: Patent
• Language: English; Korean
• Published: 11.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

본 발명은 양극 및 이를 이용하여 제조된 리튬 이차전지에 관한 것으로, 양극 집전체 상에 순차 적층된 제1 활물질층 및 제2 활물질층을 포함하고, 제1 활물질층에 포함된 도전재는 선형 도전재로 하며, 제2 활물질층보다 제1 활물질층에 포함된 선형 도전재의 함량을 높여 양극 집전체와 양극 활물질층 간의 접착력을 높이는 효과가 있다. The present invention relates to a cathode and a lithium secondary battery manufactured using same, the cathode comprising a first active material layer and a second active material layer that are sequentially stacked on a cathode current collector, wherein a conductive material included in the first active material layer is a linear conductive material, and the amount of the linear conductive material included in the first active material layer is higher than that of the second active material layer such that adhesiveness between the cathode current collector and the cathode active material layers is increased.