Patent ID: 9660260
Date: 2017-05-23
CPC Classifications: H01M,Y02E

Claim:
1. A cathode active material having a core-shell structure, wherein the shell is a coating layer of fluorine-doped spinel-structured lithium metal manganese oxide represented by the following Chemical Formula 1: wherein x is 1/(4−z), z is an oxidation number of M, and n is a real number satisfying 0<n<0.3; wherein M is a metal selected from the group consisting of Al, B, Ga, Mg, Ca, Zn, Ni, Li and a combination thereof; wherein the core is a spinel-structured lithium manganese oxide (LMO); and wherein the coating layer of fluorine-doped spinel-structured lithium metal manganese oxide has a thickness of 1 nm-1 μm.