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:
Jun. 05, 2012
Filed:
Nov. 13, 2009
Applicants:
Soo Ik JO, Seoul, KR;
Jisang Yu, Daejeon, KR;
Byungchul Choi, Seoul, KR;
Changjoo Han, Seoul, KR;
Inventors:
Assignee:
LG Chem, Ltd., , KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 6/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a lithium secondary battery using a cathode containing a lithium-containing transition metal oxide and an anode containing graphitized carbon, characterized in that an ammonium compound capable of providing ammonium ions is added to a non-aqueous electrolyte. Therefore, the present invention provides a lithium secondary battery having improved high-temperature performance by reducing decreases of residual capacity and recovery capacity resulting from high-temperature storage of the battery, via addition of such an ammonium compound.