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:
Jan. 21, 2014
Filed:
Jul. 25, 2008
Jeyoung Kim, Daejeon, KR;
Taeyeon Kim, Seoul, KR;
Seo-jae Lee, Anyang-si, KR;
Wonseok Chang, Gwangmyeong-si, KR;
Seungyoun Choi, Goyang-si, KR;
Jeyoung Kim, Daejeon, KR;
Taeyeon Kim, Seoul, KR;
Seo-Jae Lee, Anyang-si, KR;
Wonseok Chang, Gwangmyeong-si, KR;
Seungyoun Choi, Goyang-si, KR;
LG Chem, Ltd., , KR;
Abstract
Disclosed is an electrode active material having a core-shell structure, which includes: (a) a core capable of intercalating and deintercalating lithium ions; and (b) a shell including a polymer or an oligomer having a glass transition temperature of 25° C. or less when impregnated with an electrolyte, wherein a surface of the core is coated with the shell. Also, an electrode manufactured by using the electrode active material and a secondary battery including the electrode are disclosed. The shell (b) suppresses the formation of an SEI layer during initial charge of a battery, and prevents initial capacity reduction. Accordingly, it is possible to achieve a high capacity battery. The electrode active material having a core-shell structure, specially a metal (loid) based electrode active material having a core-shell structure can have a slightly higher electric capacity, compared to a conventional electrode active material, specially a conventional metal (loid) based electrode active material, and can minimize gas generation during charge/discharge.