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公开(公告)号：US20240313214A1
公开(公告)日：2024-09-19
申请号：US18268515
申请日：2021-11-17
发明人： Inchul PARK , Hyungsub KIM , Sang Hyuk LEE , Jung Hoon SONG , Junghoon KIM , Sang Cheol NAM , Kwon Young CHOI , Ohmin KWON , Seok Hyun SONG
IPC分类号： H01M4/525 , C01G53/00 , H01M4/02 , H01M4/131 , H01M10/052
CPC分类号： H01M4/525 , C01G53/006 , C01G53/50 , H01M4/131 , H01M10/052 , C01P2002/50 , C01P2002/72 , C01P2006/40 , H01M2004/028
摘要： It is related to a positive electrode active material for lithium secondary battery, comprising: a compound represented by Chemical Formula 1, wherein a molar content of lithium present in the structure of the positive electrode active material, measured through neutron diffraction analysis, is 1.01 to 1.15 for 1 mole of the positive electrode active material, a method of preparing it, and a lithium secondary battery including the same.
Li1+a(NibM11-b)1-aO2 [Chemical Formula 1]
In the Chemical Formula 1, 0-
公开(公告)号：US20240222619A1
公开(公告)日：2024-07-04
申请号：US18288691
申请日：2022-04-26
申请人： POSCO Holdings Inc. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , POSCO CHEMICAL CO., LTD
发明人： Inchul PARK , Hyungsub KIM , Sanghyuk LEE , Jung Hoon SONG , Junghoon KIM , Kwon Young CHOI , Ohmin KWON , Sang Cheol NAM , Seok Hyun SONG
IPC分类号： H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , C01G53/50 , H01M4/505 , H01M10/0525 , C01P2002/72 , C01P2006/40 , C01P2006/80
摘要： Provided is a positive active material for a lithium secondary battery including a compound represented by the following formula 1, wherein, a molar content of lithium present in a structure of the positive active material, measured through neutron diffraction analysis, is 1.02 to 1.15 per mole of the positive active material, and a c-axis lattice constant variation ratio of the R-3m structure is less than 2.3% for charge and discharge in the 2.5 V to 4.25 V range, [Chemical Formula 1] Li1+a(NibM11-b)1-aO2 in formula 1 above, 0
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