公开(公告)号：US20150016024A1

公开(公告)日：2015-01-15

申请号：US14031239

申请日：2013-09-19

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Won Chang CHOI ,  Ji Hun PARK ,  Martin HALIM ,  Joong Kee LEE ,  Jung Sub KIM ,  Kyu-Ha LEE ,  Bong Jo KANG ,  A Young KIM ,  Hun Gi JUNG ,  Yu Jin CHAE ,  Joo Man WOO ,  Yong-Ho LEE ,  Tae Yong KIM

IPC: H01G11/50 ,  H01G11/62 ,  H01G11/86 ,  H01G11/04

CPC classification number: H01G11/50 ,  H01G11/04 ,  H01G11/06 ,  H01G11/86 ,  Y02E60/13

Abstract: Disclosed is a cathode active material having a core-shell structure. The core-shell cathode active material includes a core including a lithium transition metal oxide with excellent electrochemical properties and a shell formed by coating the surface of the core with a transition metal oxide. The formation of the shell by coating a transition metal oxide on the surface of the core comprising a lithium transition metal oxide prevents the structure of the lithium transition metal oxide from collapsing and inhibits the dissolution of manganese ions, enabling the fabrication of a hybrid capacitor with improved energy density and rate characteristics. Also disclosed is a method for producing the cathode active material.

Abstract translation: 公开了具有核 - 壳结构的阴极活性材料。 核 - 壳阴极活性材料包括具有优异的电化学性质的锂过渡金属氧化物的核和通过用过渡金属氧化物涂覆芯的表面形成的壳。 通过在包含锂过渡金属氧化物的芯的表面上涂覆过渡金属氧化物来形成壳防止锂过渡金属氧化物的结构塌陷并抑制锰离子的溶解，使得能够制造具有 改善能量密度和速率特征。 还公开了一种用于制造正极活性物质的方法。