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. 12, 2015
Filed:
Mar. 22, 2012
So-ra Lee, Yongin-si, KR;
Chang-su Shin, Yongin-si, KR;
Ui-song DO, Yongin-si, KR;
Beom-kwon Kim, Yongin-si, KR;
Jae-myung Kim, Yongin-si, KR;
So-Ra Lee, Yongin-si, KR;
Chang-Su Shin, Yongin-si, KR;
Ui-Song Do, Yongin-si, KR;
Beom-Kwon Kim, Yongin-si, KR;
Jae-Myung Kim, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Abstract
Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material. The negative active material includes a carbonaceous core that has a sulfur content of about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. The lithium battery including a negative electrode including the negative active material has improved capacity characteristics and ring lifetime characteristics.