A METHOD FOR PREPARING LITHIUM MANGANESE SPINEL OXIDE HAVING IMPROVED ELECTROCHEMICAL PERFORMANCE
摘要
The present invention relates to a method for preparing a lithium manganese complex oxide Li>1+x<Mn>2-x<O>4< (0 x 0.12) used as a cathode active material of a lithium or lithium ion secondary battery. The present invention provides a method for preparing a manganese compound comprising the step of simultaneously applying a mechanical force and heat energy to a manganese compound to remove defects present in particles of the manganese compound and to control the aggregation of particles and the shape of the aggregated particles, a method for preparing a lithium manganese complex oxide with a spinel structure using the manganese compound prepared by the above method as a raw material, and a lithium or lithium ion secondary battery using the lithium manganese complex oxide with a spinel structure prepared by the above method as a cathode active material. A lithium or lithium ion secondary battery using the lithium manganese complex oxide with a spinel structure prepared from the manganese compound without defects inside particles as a cathode active material has excellent charge/discharge characteristics and cyclic performance.
申请公布号
WO0144113(A1)
申请公布日期
2001.06.21
申请号
WO2000KR01470
申请日期
2000.12.15
申请人
LG CHEMICAL LTD.;PARK, HONG-KYU;BAE, JOON-SUNG;PARK, SEONG-YONG;LEE, KI-YOUNG
发明人
PARK, HONG-KYU;BAE, JOON-SUNG;PARK, SEONG-YONG;LEE, KI-YOUNG