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    • 4. 发明公开
    • 리튬 이차 전지용 양극 활물질, 이의 제조 방법 및 이를 이용한 리튬 이차 전지
    • 用于锂二次电池的正极活性材料,其制造方法和使用该锂电池的锂二次电池
    • KR1020140083199A
    • 2014-07-04
    • KR1020120152578
    • 2012-12-24
    • 주식회사 포스코재단법인 포항산업과학연구원주식회사 포스코이에스엠
    • 박정우김영상
    • H01M4/505H01M4/1391C01G45/02H01M10/052
    • H01M4/505C01G45/1228C01P2006/40H01M4/131H01M10/052Y02E60/12
    • The present invention relates to a positive active material for a lithium secondary battery, a method for manufacturing same, and a lithium secondary battery using same. According to the present invention, a mixed Mn-based positive active material for a lithium secondary battery having a bimodal particle size distribution can be provided. Also, a method for manufacturing a mixed Mn-based positive active material for a lithium secondary battery including a first step for mixing a large stone manganese compound (A) with a particle diameter of 5 to 25 mm with a small stone manganese compound (B) with a particle diameter of 0.3 to 3 mm; a second step for mixing the mixture of the large stone manganese compound (A) and the small stone manganese compound (B) with a lithium compound and an additive; a third step for plasticizing the mixture of the large stone manganese compound (A), the small stone manganese compound (B), the lithium compound, and the additive; and a fourth step for pulverizing the plasticized mixture can be provided.
    • 本发明涉及锂二次电池用正极活性物质及其制造方法以及使用该二次电池的锂二次电池。 根据本发明,可以提供具有双峰粒度分布的混合的用于锂二次电池的Mn系正极活性物质。 另外,一种锂二次电池用混合Mn系正极活性物质的制造方法,其特征在于,包括:将小型石锰化合物(B)与粒径为5〜25mm的大型石锰化合物(A)混合的第一工序 ),粒径为0.3〜3mm; 将大型石锰化合物(A)和小石锰化合物(B)的混合物与锂化合物和添加剂混合的第二工序; 第三步:将大石锰化合物(A),小石锰化合物(B),锂化合物和添加剂的混合物进行增塑; 并且可以提供用于粉碎增塑混合物的第四步骤。