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:
Dec. 15, 2015
Filed:
Mar. 07, 2013
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Song Taek Oh, Daejeon, KR;
Sang Uck Lee, Daejeon, KR;
Geun Chang Chung, Daejeon, KR;
Sin Kyu Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 4/62 (2006.01); B60L 11/18 (2006.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); B60L 11/1879 (2013.01); H01M 4/505 (2013.01); H01M 4/625 (2013.01); B60L 2240/545 (2013.01); Y02E 60/122 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/705 (2013.01); Y02T 10/7011 (2013.01);
Abstract
An object of the present invention is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure, exhibits core-shell phase transition by which phase transition of a crystal structure occurs from a cubic structure to a tetragonal structure in a direction from the surface of particles to the center of the particles during discharging to the 3V region, and includes a conductive material at the shell to improve electrical conductivity of the tetragonal structure.