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:
Nov. 25, 2014
Filed:
Feb. 26, 2010
Ji Heon Ryu, Seoul, KR;
Min Su Kim, Daejeon, KR;
Jung Eun Hyun, Seoul, KR;
Jaepil Lee, Daejeon, KR;
Eun Ju Lee, Daejeon, KR;
Youngjoon Shin, Daejeon, KR;
Ji Heon Ryu, Seoul, KR;
Min Su Kim, Daejeon, KR;
Jung Eun Hyun, Seoul, KR;
Jaepil Lee, Daejeon, KR;
Eun Ju Lee, Daejeon, KR;
Youngjoon Shin, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.