Samsung Sdi Co., Inc.

Soohyeon Kim

Jinhwa Kim

Kihyun Kim

Jongmin Kim

Jaeho Lee

Seonyoung Kwon

Kwanghwan Cho

Joongho Moon

Yumi Song

Mingzi Hong

Soonbong Choi

Pilsang Yun

Provided is a positive active material for a rechargeable lithium battery including a nickel-based composite oxide having a nickel content of greater than or equal to 60 mol % relative to a total amount of metal excluding lithium and a coating layer on the surface of the nickel-based composite oxide, wherein the coating layer includes lithium fluoride (LiF) and metal fluoride produced by firing a metal oxide and a fluorine-based organic material.

Cathode active material for rechargeable lithium battery comprising coating layer comprising lithium fluoride and metal fluoride and method for manufacturing the same

Disclosed are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle has a predetermined arrangement structure in which (003) surface of primary particles are aligned to be in a vertical direction with respect to a tangent line at a point (P) at which the (003) surface of the primary particles meet a surface of the secondary particle.

Cathode active material for lithium secondary battery and lithium secondary battery including same

A composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode are provided. The composite cathode active material includes a core including a lithium metal oxide and a coating layer on the core, wherein the lithium metal oxide includes two or more transition metals including nickel (Ni), an amount of Ni within one mole of the two or more transition metals included in the lithium metal oxide is about 0.65 mol or greater, the coating layer includes LiF, and a resistance of the composite cathode active material is lower than that of the core.

Composite cathode active material, and cathode and lithium battery comprising composite cathode active material

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Yongin-si, South Korea

Soohyeon Kim