The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
Dec. 15, 2000
Hong-kyu Park, Taejeon, KR;
Seong-yong Park, Taejeon, KR;
Ki-young Lee, Taejeon, KR;
Joon-sung Bae, Taejeon, KR;
Hong-Kyu Park, Taejeon, KR;
Seong-Yong Park, Taejeon, KR;
Ki-Young Lee, Taejeon, KR;
Joon-Sung Bae, Taejeon, KR;
LG Chemical Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a method for preparing a lithium manganese complex oxide LiMnO(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.