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. 14, 2013
Filed:
Nov. 25, 2009
Won-il Jung, Suwon-si, KR;
Akira Takamuku, Osaka, JP;
Hideaki Maeda, Osaka, JP;
Naoya Kobayashi, Osaka, JP;
Won-Il Jung, Suwon-si, KR;
Akira Takamuku, Osaka, JP;
Hideaki Maeda, Osaka, JP;
Naoya Kobayashi, Osaka, JP;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A rechargeable lithium ion battery including a positive electrode a positive active material and including a negative electrode having a negative active material. The positive active material includes a lithium-manganese-based compound core and a heat resistant polymer disposed on the lithium-manganese-based compound core. The heat resistant polymer has a glass transition temperature (Tg) ranging from about 80 to about 400° C. Alternatively, the positive active material may include a lithium-manganese-based compound core and an inorganic metal compound as well as the heat resistant polymer with a glass transition temperature (Tg) ranging from about 80 to about 400° C. disposed on the lithium-manganese-based compound core.