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公开(公告)号：KR20200136347A
公开(公告)日：2020-12-07
申请号：KR20200160465
申请日：2020-11-25
Applicant: KOREA ELECTRONICS TECHNOLOGY
Inventor： CHO WOO SUK , SONG JUN HO , YU JI SANG , JEONG HYUN LEE
Abstract: 본발명은리튬이차전지용양극활물질및 그의제조방법이개시된다. 본발명의리튬이차전지용양극활물질은 Ni, Co 및 Mn을포함하는니켈과량계복합전이금속전구체의표면에 Zr을코팅한후, 리튬소스와열처리하여 Zr이상기 Ni, Co 및 Mn 중적어도하나와치환되어아래의화학식1로표현되며, 니켈과량계복합전이금속전구체는, Zr의성분함량이입자표면에서입자내부로들어갈수록낮아지며, 입자표면과입자내부의농도차이가 0.67 내지 0.74at%인것을특징으로한다. [화학식1] LiNiaCobMncZrdO2 (0.6≤a≤0.9, a+b+c+d=1, 0.1
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