公开(公告)号：US20180198119A1

公开(公告)日：2018-07-12

申请号：US15506443

申请日：2015-06-18

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Ho Sung KIM ,  Byeong Su KANG ,  Sun Woo YANG ,  Min Young KIM ,  Chae Hwan JEONG

IPC: H01M4/1397 ,  C01B25/45 ,  H01M4/58 ,  H01M4/62 ,  H01M4/04 ,  H01M10/052 ,  B01J2/22

CPC classification number: H01M4/1397 ,  B01J2/22 ,  C01B25/45 ,  C01B25/451 ,  H01M4/0433 ,  H01M4/0471 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/58 ,  H01M4/5825 ,  H01M4/62 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/30

Abstract: Disclosed is a method of preparing a cathode electrode material for a secondary battery, including a hydrate precursor preparation step of preparing a manganese phosphate hydrate precursor using a coprecipitation process, a synthetic powder preparation step of preparing a synthetic powder by mixing the manganese phosphate hydrate precursor in a powder form with lithium phosphate and carbon, an oxide material powder preparation step of preparing a lithium manganese phosphate oxide material powder by milling and annealing the synthetic powder, a composite powder preparation step of preparing a composite powder by mixing the lithium manganese phosphate oxide material powder with a Li2MnO3-based cathode material, and a slurry preparation step of preparing a slurry by mixing the composite powder with a conductor and a binder.