Samsung Sdi Co., Inc.

Cj Cheiljedang Corporation

Hanseul Lee

Jong Chul Kim

Pilsang Yun

Hyunbeom Kim

Myung Ho Kim

Do-Yu Kim

Sung Mo Geum

Hak Bae Kim

Eun Hye Kim

Jongsan Im

Junmo Gu

Gundong Kim

A method of preparing a positive electrode active material for a rechargeable lithium battery is provided to include: mixing a first nickel-based composite hydroxide in a form of a secondary particle in which a plurality of primary particles are aggregated and at least a portion of the primary particles have a radially arranged structure, a second lithium nickel-based composite oxide having a monolith structure, a lithium raw material, and a boron raw material; and performing heat-treatment.

Positive electrode active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery

Provided are a positive electrode active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive electrode active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide, wherein the positive electrode active material is in a form of a secondary particle in which a plurality of primary particles are aggregated together and at least a portion of the primary particles are radially arranged, the secondary particle includes an inner portion and an outer portion, the inner portion of the secondary particle is a region from a center of the secondary particle to 50±5 length % of the total distance from the center to the surface of the secondary particle, and is a region in which primary particles and pores are irregularly arranged.

Growing community of inventors

Yongin-si, South Korea

Hanseul Lee