公开(公告)号：US20230231125A1

公开(公告)日：2023-07-20

申请号：US18007856

申请日：2021-06-04

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Byoung-woo KANG ,  Jung-hwa LEE

IPC: H01M4/505 ,  H01M4/525 ,  C01G53/00

CPC classification number: H01M4/505 ,  H01M4/525 ,  C01G53/50 ,  H01M2004/028

Abstract: The method includes a delithiation step of deintercalating a part of lithium of a Li-rich metal oxide represented by [Formula 1] below and having a layered structure, and a heat-treatment step of heat-treating the delithiated Li-rich metal oxide, thereby allowing dispersion to be achieved through diffusion of M′ and/or M elements constituting the Li-rich metal oxide:


a{Li2M′O3}·(1−a){LiMO2} or Li1+x(M′M)1−xO2  [Formula 1]

(wherein 0