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:
Apr. 23, 2019
Filed:
Mar. 07, 2017
Applicant:
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Inventors:
Yeonjoo Choi, Yongin-si, KR;
Junghyun Nam, Yongin-si, KR;
Bokkyu Jeon, Yongin-si, KR;
Hoon Seok, Yongin-si, KR;
Assignee:
Samsung SDI Co., Ltd., Yongin-Si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 10/05 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01); H01M 10/0565 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/5825 (2013.01); H01M 4/622 (2013.01); H01M 4/625 (2013.01); H01M 10/052 (2013.01); H01M 10/0565 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0082 (2013.01);
Abstract
A positive active material composition for a lithium secondary battery includes a positive active material that allows intercalation and deintercalation of lithium ions, a binder, and a conductive agent. The conductive agent includes a first conductive agent having an average particle diameter (D50) ranging from about 20 nanometers (nm) to about 40 nm and a second conductive agent having a D50 ranging from about 1 micrometer (μm) to about 5 μm.