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:
Feb. 11, 2014
Filed:
Mar. 14, 2011
Kyeu-yoon Sheem, Yongin-si, KR;
Mee-young Lee, Yongin-si, KR;
Sumihito Ishida, Yongin-si, KR;
Eui-hwan Song, Yongin-si, KR;
Kyeu-Yoon Sheem, Yongin-si, KR;
Mee-Young Lee, Yongin-si, KR;
Sumihito Ishida, Yongin-si, KR;
Eui-Hwan Song, Yongin-si, KR;
Samsung SDI Co., Ltd., , KR;
Abstract
Disclosed are a positive active material composition for an electrochemical device, a positive electrode, and an electrochemical device including the same. The positive active material composition includes: a carbon-based additive including a hydroxyl group (—OH) and an enol group (—C═C—OH) on the surface, having a peak area ratio (OH/C═COH) of a hydroxyl group peak area and an enol group peak area of an infrared spectroscopy (FT-IR) spectrum ranging from about 0.5 to about 10, having a specific surface area of about 50 m/g to about 3000 m/g, and having an oxygen-containing heterogeneous element in a content of less than about 15 wt %; a positive active material; a conductive material; and a binder.