Oriented cathode active material for lithium secondary battery and method for manufacturing the same

• Main Authors: PARK HYEJEONG, KIM JAEHAN, CHOI SEUNG UN, KIM DEUKSU, KIM JEONG HAN
• Format: Patent
• Language: English; Korean
• Published: 16.01.2024
• 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

본 발명은 1차 입자의 응집체로 형성된 2차 입자내부로부터 입자외부까지 점진적으로 밀도가 변화하는 밀도 구배형 전구체를 소성하여 배향성이 형성된 것을 특징으로 하는 리튬전지용 양극활물질 및 이의 제조방법에 관한 것이다. 본 발명에 따른 리튬전지용 양극활물질은 배향성 구조를 가짐으로써 고수명 및 고용량 특성을 가질 수 있다. The present invention relates to a lithium battery cathode active material and a preparation method therefor, the material having an orientation formed by firing a density gradient precursor in which the density gradually changes from the inside of second particles, formed as an aggregate of primary particles, to the outside of the particles. The lithium battery cathode active material according to the present invention has an oriented structure, and thus can have a long lifespan and high capacity characteristics.