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:
Dec. 04, 2017
Samsung Sdi Co., Ltd., Yongin-si, KR;
Pilsang Yun, Yongin-si, KR;
Jiyoon Kim, Yongin-si, KR;
Wooyoung Yang, Yongin-si, KR;
Donggyu Chang, Yongin-si, KR;
Minah Cha, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a porous shell, wherein a porosity of the porous shell may be greater than a porosity of the porous core, and a dense intermediate layer may be disposed between the porous core and the porous shell, wherein a porosity of the dense intermediate layer may be lower than the porosity of the porous core and the porosity of the porous shell; a method of preparing the same; a nickel-based active material for a lithium secondary battery formed therefrom; and a lithium secondary battery containing a positive electrode including the same.