POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME

The present invention relates to a positive electrode active material for rechargeable lithium batteries having excellent capacity and lifespan, and showing improved stability and a rechargeable lithium battery including the same. The positive electrode active material for rechargeable lithium batte...

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Bibliographic Details
Main Authors JANG, JI YEON, LEE, YOUNG HUN, KIM, YOUNG KI, HONG, SOON KIE, CHOI, ICK KYU, HONG MINGZI, LEE, SOON REWL
Format Patent
LanguageEnglish
Korean
Published 27.11.2019
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Summary:The present invention relates to a positive electrode active material for rechargeable lithium batteries having excellent capacity and lifespan, and showing improved stability and a rechargeable lithium battery including the same. The positive electrode active material for rechargeable lithium batteries comprises a core and a surface layer formed on the surface of the core. The core comprises a first crystal structure. The surface layer includes a first crystal structure and a second crystal structure different from the first crystal structure. In the surface layer, the first crystal structure is present more than the second crystal structure. 리튬 이차 전지용 양극 활물질 및 이를 포함하는 리튬 이차 전지에 관한 것으로서, 상기 양극 활물질은 코어 및 이 코어 표면에 형성된 표면층을 포함하며, 상기 코어는 제1 결정 구조를 포함하고, 상기 표면층은 제1 결정 구조 및 상기 제1 결정 구조와 상이한 제2 결정 구조를 포함하며, 상기 표면층에서 상기 제1 결정 구조가 상기 제2 결정 구조보다 많이 존재하는 것인 리튬 이차 전지용 양극 활물질이다.
Bibliography:Application Number: KR20180056579