Lg Chem, Ltd

Dong Ryoung Kang

Sang Soon Choi

Na Ri Park

Woo Ram Lee

Dong Jin Kim

Hyun Uk Kim

Jun Ho Eom

Hwa Seok Chae

Young Su Park

Woo Hyun Kim

Jae Geun Kim

Na Ri Kim

A positive electrode material, a positive electrode including the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, a positive electrode material includes a first positive electrode active material having a larger average particle diameter than a second positive electrode active material, wherein the first positive electrode active material and the second positive electrode active material are each independently a lithium transition metal oxide having a molar ratio of nickel of 80 mol % or more relative to the total molar amount of transition metals in the lithium transition metal oxide, and the positive electrode material satisfies Equation (1):0<{()/}×100≤10  Equation (1):wherein, in Equation (1), A denotes a particle strength of the first positive electrode active material, and B denotes a particle strength of the second positive electrode active material.

Positive electrode material for lithium secondary battery, and positive electrode and lithium secondary battery which include the same

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Daejeon, South Korea

Dong Ryoung Kang