公开(公告)号：US20150349339A1

公开(公告)日：2015-12-03

申请号：US14655616

申请日：2013-02-15

Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE

Inventor： Woo Suk CHO ,  Jun-Ho SONG ,  Jeom-Soo KIM ,  Tae-Eun YIM ,  Young-Jun KIM ,  Sang-Min KIM ,  Hyunsang CHO

IPC: H01M4/525 ,  H01M4/52 ,  H01M4/58 ,  H01M4/36 ,  H01M4/04

CPC classification number: H01M4/525 ,  H01M4/0402 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/505 ,  H01M4/523 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: The present invention relates to a cathode active material for a lithium secondary battery and a preparation method thereof, and particularly, to a cathode active material for a lithium secondary battery having improved battery characteristics because of manganese phosphate uniformly coated on the surface of a Ni-rich cathode active material, and a preparation method thereof.According to the present invention, because manganese phosphate is uniformly coated on the surface of the Ni-rich cathode active material, a side reaction of the electrolyte is inhibited and a lithium secondary battery having excellent power characteristics, high temperature cycle life characteristics, and thermal stability can be prepared.

Abstract translation: 本发明涉及一种用于锂二次电池的正极活性材料及其制备方法，特别涉及一种具有改善的电池特性的锂二次电池用正极活性物质，因为在Ni- 丰富的正极活性物质及其制备方法。 根据本发明，由于磷酸锰均匀地涂覆在富Ni阴极活性物质的表面上，电解液的副反应被抑制，具有优异的功率特性，高温循环寿命特性和热性的锂二次电池 稳定性可以准备。