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:
Dec. 14, 2021
Filed:
Aug. 17, 2017
Samsung Sdi Co., Ltd., Yongin-si, KR;
Soojeong Lee, Yongin-si, KR;
SAMSUNG SDI CO., LTD., Yongin-si, KR;
Abstract
Disclosed is that an anode active material for a lithium secondary battery, and a lithium secondary battery comprising the same. The anode active material for a lithium secondary battery comprises a composite of a Si-based or Sn-based material and a carbon-based material, a Raman spectrum peak intensity ratio (I/I) of a peak intensity (I) of a D peak (1360 cmto 1370 cm) relative to a peak intensity (I) of a D' peak (1620 cmto 1625 cm) of the carbon-based material is 4.5 to 10, a peak intensity ratio (I/I) of a peak intensity (I) of a G peak (1580 cmto 1590 cm) relative to a peak intensity (I) of a D peak (1360 cmto 1370 cm) of the carbon-based material is 0.6 to 1.5, and an average diameter (D50) of the Si-based or Sn-based metallic material is 30 nm to 80 nm.