Invention Grant
- Patent Title: Cathode active material, lithium secondary battery having same, and method for preparing same
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Application No.: US15123618Application Date: 2014-09-12
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Publication No.: US10367199B2Publication Date: 2019-07-30
- Inventor: Woosuk Cho , Jeomsoo Kim , Junho Song , Taeeun Yim , Sanggil Woo , Youngjun Kim , Kowoon Lee
- Applicant: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
- Applicant Address: KR Gyeonggi-Do
- Assignee: Korea Electronics Technology Institute
- Current Assignee: Korea Electronics Technology Institute
- Current Assignee Address: KR Gyeonggi-Do
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Priority: KR10-2014-0026138 20140305
- International Application: PCT/KR2014/008501 WO 20140912
- International Announcement: WO2015/133692 WO 20150911
- Main IPC: H01M4/525
- IPC: H01M4/525 ; H01M4/485 ; C01G53/00 ; C01G23/047 ; H01M4/505 ; H01M10/0525 ; H01M10/052 ; H01M4/02
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 LiMO2(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. LiNiaCobMncMdO2 [Chemical Formula 1] (0.6
Public/Granted literature
- US20170077514A1 CATHODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY HAVING SAME, AND METHOD FOR PREPARING SAME Public/Granted day:2017-03-16
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