METHOD OF POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY

• Main Authors: PARK JUNSEOK, KIM MINHAN, CHOI JEONJIN, LEE DAEHOE, KIM ILSEOK, LIM OKGYU, PARK DOHYUNG, KIM DONGJIN, JEON GYURAN
• Format: Patent
• Language: English; Korean
• Published: 14.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present disclosure relates to a positive electrode active material for a lithium secondary battery comprising lithium nickel complex oxide and a c-axis lattice parameter of a unit lattice of the lithium nickel complex oxide satisfies a formula, 14.1720 Å <= c <= 14.1750 Å; a method for manufacturing the same; and a lithium secondary battery comprising the same. According to the present invention, a lithium secondary battery having a high capacity and an excellent life characteristic can be implemented. 본 기재는 리튬 니켈 복합 산화물을 포함하고, 상기 리튬 니켈 복합 산화물의 단위 격자(unit lattice)의 c축 격자 상수(lattice parameter)는 하기 식 1을 만족하는 것인 리튬 이차 전지용 양극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지에 관한 것이다. [식 1] 14.1720 Å ≤ c ≤ 14.1750 Å