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.
Type:
Application
Filed:
September 19, 2013
Publication date:
January 15, 2015
Applicant:
KOREA INSITIUTE OF SCIENCE AND TECHNOLOGY
Inventors:
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