公开(公告)号：US12113217B2

公开(公告)日：2024-10-08

申请号：US18501932

申请日：2023-11-03

申请人： SK INNOVATION CO., LTD. ,  SK ON CO., LTD.

发明人： Ji Yae Do ,  Min Suk Kang ,  Min Cheol Beak ,  Kwang Ho Lee ,  Wan Uk Choi

IPC分类号： H01M4/58 ,  C01B25/45 ,  H01M4/131 ,  H01M10/052 ,  H01M4/02

CPC分类号： H01M4/5825 ,  C01B25/45 ,  H01M4/131 ,  H01M10/052 ,  C01P2002/54 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

摘要： Cathode active materials for lithium secondary batteries and lithium secondary batteries including the cathode active materials are disclosed. In some implementations, a cathode active material for a lithium secondary battery includes a lithium metal phosphate particle having a crystallite size in a range from 150 nm to 450 nm in a direction of a crystallographic plane (020) as measured by an X-ray diffraction (XRD) analysis. In some implementations, a lithium secondary battery includes a cathode including a cathode active material layer that includes a cathode active material for a lithium secondary battery, and an anode facing the cathode. In some implementations, an electrode crystallite size ratio defined by Equation 4 is in a range from 0.5 to 0.9.