公开(公告)号：US20240162437A1

公开(公告)日：2024-05-16

申请号：US18420436

申请日：2024-01-23

申请人： LG Energy Solution, Ltd.

发明人： So Ra Baek ,  Eun Sol Lho ,  Wang Mo Jung ,  Sang Wook Lee ,  Eun Jo

IPC分类号： H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M10/0525

CPC分类号： H01M4/525 ,  C01G53/50 ,  H01M4/505 ,  H01M10/0525 ,  C01P2002/70 ,  C01P2004/51 ,  H01M2004/021

摘要： A positive electrode active material for a secondary battery which includes a nickel-based lithium composite transition metal oxide including nickel (Ni), wherein the lithium composite transition metal oxide satisfies Equation 1 and Equation 2 below


80 nm≤crystallite sizeFWHM≤150 nm  [Equation 1]



Δsize(|crystallite sizeIB−crystallite sizeFWHM|)≤20  [Equation 2]



wherein, in Equation 1 and Equation 2, crystallite sizeFWHM is a crystallite size obtained by calculating from X-ray diffraction (XRD) data using a full width at half maximum (FWHM) method, and crystallite sizeIB is a crystallite size obtained by calculating from XRD data using an integral breadth (IB) method.