POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, PREPARING METHOD THEREOF AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary...

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Hauptverfasser: CHANG, Donggyu, KIL, Donghyun, KIM, Jinhwa, HA, Jeuk, JANG, Jungsue, KIM, Minhan, CHAE, Youngjoo, KIM, Jinyoung, SHIM, Jaeha, SEOG, Jihyun, CHOI, Aram, AHN, Kiyong
Format: Patent
Sprache:eng
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Zusammenfassung:Disclosed are a positive active material for a rechargeable lithium battery, a method of preparing the same, and a rechargeable lithium battery including the same. The positive active material includes a first positive active material in a form of secondary particles including a plurality of primary particles that are aggregated together, and a second positive active material having a single particle form, wherein both of the first positive active material and the second positive active material are nickel-based positive active materials, each of the first positive active material and the second positive active material is coated with cobalt, and a maximum roughness of a surface of the second positive active material is greater than or equal to about 15 nm.