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:
May. 23, 2017
Filed:
Apr. 30, 2014
Lg Chem, Ltd., Seoul, KR;
Song Taek Oh, Daejeon, KR;
Jung Hwan Park, Daejeon, KR;
Geun Chang Chung, Daejeon, KR;
Su Hwan Kim, Daejeon, KR;
Juichi Arai, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
A mixed positive electrode active material comprising a lithium manganese oxide represented by following [Chemical Formula 1] and a second positive electrode active material represented by following [Chemical Formula 2], and a lithium secondary battery comprising the same are disclosed.LiMnO.(1−)LiMO  [Chemical Formula 1] In [Chemical Formula 1], 0<a<1, 0.9≦x≦1.2, and M is at least one element selected from the group consisting of Al, Mg, Mn, Ni, Co, Cr, V and Fe.LiMnCOMO  [Chemical Formula 2] In [Chemical Formula 2], 0<x<1.5, 0≦y<0.5, and M is at least one of transition metal elements. By comprising Mn-rich and Co-doped LiMnO, a rapid output decrease at a low SOC section may be relaxed to enlarge an available SOC section. Improved output may be obtained throughout an entire SOC section when compared with a case using pure LiMnO.