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:
Mar. 21, 2017
Filed:
Jan. 30, 2015
Applicant:
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Inventors:
Sang-Woo Cho, Yongin-si, KR;
Yong-Chan You, Yongin-si, KR;
Chang-Wook Kim, Yongin-si, KR;
Sang-In Park, Yongin-si, KR;
Assignee:
SAMSUNG SDI CO., LTD., Yongin-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/052 (2010.01); H01M 4/36 (2006.01); H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/628 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11); Y02T 10/7011 (2013.01);
Abstract
Provided are a positive active material that has a decreased amount of Li-containing impurities that remain on a lithium transition metal composite oxide surface to decrease an amount of gas generation and has improved lifespan properties, a method of preparing the same, a positive electrode for a lithium secondary battery including the positive active material, and a lithium secondary battery including the same.