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

• Main Authors: KIM MINHAN, YOU YONGCHAN, LEE DAEHOE, PARK DOHYUNG
• Format: Patent
• Language: English; Korean
• Published: 31.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

리튬 이차 전지용 양극 활물질 및 이 양극 활물질을 포함하는 리튬 이차 전지에 관한 것으로서, 상기 양극 활물질은 하기 화학식 1로 표현된 화합물을 포함하는 코어; 및 상기 코어 표면에 위치하며, Al 화합물 또는 Co 화합물을 포함하는 구조 안정화 화합물을 포함한다. [화학식 1] LiaNixCoyMezM1kO2-pTp (상기 화학식 1에서, 0.9 ≤ a ≤ 1.1, 0.6 ≤ x ≤ 0.93, 0 < y ≤ 0.3, 0 < z ≤ 0.3, 0 ≤ k ≤ 0.005, x + y + z =1, 0 ≤ p ≤ 0.005이고, Me는 Mn 또는 Al이고, M1은 Mg, Ba, B, La, Y, Ti, Zr, Mn, Si, V, P, Mo, W 또는 이들의 조합이고, T는 F임.) A positive active material for a rechargeable lithium battery includes a core including a compound represented by Chemical Formula 1 and a structure-stabilizing compound on a surface of the core. The structure-stabilizing compound includes an Al compound or a Co compound. Chemical Formula 1 is LiaNixCoyMezM1kO2−pFp where 0.9≤a≤1.1, 0.7≤x≤0.93, 0<y≤0.3, 0<z≤0.3, 0≤k≤0.005, x+y+z+k=1, 0≤p≤0.005, Me is Mn or Al, and Ml is Mg, Ba, B, La, Y, Ti, Zr, Mn, Si, V, P, Mo, W, or a combination thereof.