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. 02, 2016
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, wherein the negative active material includes a carbonaceous material that has a peak with respect to a surface (002) at a Bragg angle 2θ of 26.4°±0.1° in an X-ray diffraction spectrum, has a full width at half maximum of the peak with respect to the surface (002) of about 0.2° to about 0.6°, has an interlayer spacing (d) of the surface (002) measured by X-ray diffraction of about 3.36 Å to about 3.37 Å, and has a crystallite size measured from the full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm, wherein the carbonaceous material includes a core; and an amorphous carbon layer disposed on a non-cracked surface portion of the core.