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. 19, 2022
Filed:
Dec. 08, 2017
Applicant:
Samsung Sdi Co., Ltd., Yongin-si, KR;
Inventors:
Donggyu Chang, Yongin-si, KR;
Jongmin Kim, Yongin-si, KR;
Assignee:
Samsung SDI Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/052 (2010.01); C01G 53/00 (2006.01); H01M 50/107 (2021.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/505 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); C01G 53/66 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/525 (2013.01); H01M 50/107 (2021.01); C01P 2006/10 (2013.01); C01P 2006/16 (2013.01); H01M 10/052 (2013.01); H01M 2004/028 (2013.01);
Abstract
A nickel-based active material for a lithium secondary battery includes a porous inner portion having closed pores and an outer portion, wherein the porous inner portion has a density less than that of the outer portion, and the nickel-based active material has a net density of 4.7 g/cc or less. A method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material are provided.