公开(公告)号：US20160329563A1

公开(公告)日：2016-11-10

申请号：US14842752

申请日：2015-09-01

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Si Hyoung OH ,  Byung Won CHO ,  Kyung Yoon CHUNG ,  Hae Ri LEE

IPC: H01M4/505 ,  H01M4/36 ,  H01M10/052

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/5825 ,  H01M10/052 ,  H01M2004/028 ,  Y02E60/122

Abstract: Provided are a cathode active material coated with a fluorine-doped spinel-structured lithium metal manganese oxide, a lithium secondary battery including the same, and a method for preparing the same. The cathode active material has improved chemical stability and provides improved charge/discharge characteristics at elevated temperature (55-60° C.) and high rate. The cathode active material allows lithium ions to pass through the coating layer with ease and is chemically stable, and thus may be used effectively as a cathode active material for a high-power lithium secondary battery.

Abstract translation: 提供涂覆有掺杂氟的尖晶石结构的锂金属锰氧化物的正极活性材料，包括其的锂二次电池及其制备方法。 阴极活性材料具有改善的化学稳定性，并且在高温（55-60℃）和高速率下提供改善的充放电特性。 阴极活性材料容易使锂离子通过涂层，并且化学稳定，因此可以有效地用作高功率锂二次电池的阴极活性材料。