专利检索 ap:("LG Energy Solution, Ltd.") AND inv:"Jong Woo Kim" 第 1 页

1.

发明公开
Method of Preparing Positive Electrode Active Material for Lithium Secondary Battery and Positive Electrode Active Material Prepared Thereby 审中-公开

公开(公告)号：US20240270603A1

公开(公告)日：2024-08-15

申请号：US18573109

申请日：2022-11-02

申请人： LG Energy Solution, Ltd.

发明人： Eun Sol Lho , Gi Beom Han , Jong Woo Kim , Wang Mo Jung , Sang Min Park , Sang Wook Lee , Seul Ki Kim , Hyeong ll Kim

IPC分类号： C01G53/00 , H01M4/02 , H01M4/525 , H01M10/052

CPC分类号： C01G53/50 , H01M4/525 , H01M10/052 , H01M10/4235 , C01P2006/40 , H01M2004/028

摘要： The present invention relates to a method of preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material prepared thereby, wherein the preparation method includes a first step of preparing a lithium transition metal oxide by mixing a lithium raw material and a transition metal precursor containing 70 mol % or more of nickel based on the total number of moles of transition metals and sintering the mixture; and a second step of washing the lithium transition metal oxide with hot water of more than 90° C., wherein, after the second step, a result of EELS analysis of a particle surface of the lithium transition metal oxide satisfies Equation 1.