Sk on Co., Ltd.

Sk Innovation Co., Ltd.

Ki Joo Eom

Yong Seok Lee

Myung Ro Lee

Hyun Joong Jang

Jae Ram Kim

Jae Yun Min

Sang Won Bae

Jae Yeong Lee

Jeong Hoon Jeun

Ji Won Na

Yeon Hwa Song

Je Nam Choi

Cathodes and lithium secondary batteries including the cathodes are disclosed. In some implementations, a cathode may include a cathode current collector and a cathode active material layer disposed on the cathode current collector and including cathode active material particles such that the cathode active material layer satisfies a specific equation. The cathode active material particles may include lithium metal oxide particles that include nickel, and may have a mole fraction of cobalt of 0.02 or less with respect to all elements except for lithium and oxygen.

Cathode for lithium secondary battery and lithium secondary battery including the same

A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes a cathode active material and a conductive material ID/IG is in a range from 0.5 to 1.25 in a Raman spectrum of the cathode active material layer. The cathode active material includes lithium metal oxide particles containing nickel and manganese and having a content of cobalt of less than 2 mol % among all elements except for lithium and oxygen.

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Daejeon, South Korea

Ki Joo Eom