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:
Jul. 30, 2019
Filed:
Sep. 12, 2014
Korea Electronics Technology Institute, Seongnam-si, Gyeonggi-do, KR;
Woosuk Cho, Seongnam-si, KR;
Jeomsoo Kim, Hwaseong-si, KR;
Junho Song, Seongnam-si, KR;
Taeeun Yim, Seoul, KR;
Sanggil Woo, Yongin-si, KR;
Youngjun Kim, Seongnam-si, KR;
Kowoon Lee, Seongnam-si, KR;
Korea Electronics Technology Institute, Gyeonggi-Do, KR;
Abstract
The present invention relates to a cathode active material, a lithium secondary battery having the same, and a method for preparing the same, and the purpose of the present invention is to provide battery properties and thermal stability under a high temperature environment even if the Ni content of M in LiMO(M=Ni, Co, Ti, Zr, etc.) of layered oxide is increased to 65% or more. The present invention provides a cathode active material for a lithium secondary battery which is represented by chemical formula 1 below and is obtained by substituting a part of Ni, Co and Mn for a dissimilar metal (M) through heat treatment with a lithium source after coating the dissimilar metal (M) on the surface of a transition metal precursor comprising Ni, Co and Mn.LiNiCoMnMO  [Chemical Formula