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. 05, 2023
Filed:
Sep. 23, 2016
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Assignee:
LG ENERGY SOLUTION, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/134 (2010.01); H01M 10/052 (2010.01); H01M 4/38 (2006.01); H01M 4/48 (2010.01); H01M 10/0525 (2010.01); H01M 4/62 (2006.01); B01J 13/04 (2006.01); B01J 13/20 (2006.01); H01M 4/133 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); B01J 13/04 (2013.01); B01J 13/20 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/36 (2013.01); H01M 4/38 (2013.01); H01M 4/386 (2013.01); H01M 4/483 (2013.01); H01M 4/587 (2013.01); H01M 4/625 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01);
Abstract
The present specification relates to a negative electrode active material which includes a silicon-based composite represented by SiO(0≤a<1), and a carbon coating layer distributed on a surface of the silicon-based composite, and which has a bimodal pore structure including nanopores and mesopores. In a lithium secondary battery including the negative electrode active material, an oxygen content in the silicon-based composite can be controlled to improve initial efficiency and capacity characteristics, and a specific surface area can also be controlled, and thus a side reaction with electrolyte can be reduced.