公开(公告)号：US20230339771A1

公开(公告)日：2023-10-26

申请号：US17904309

申请日：2021-02-17

Applicant: UMICORE

Inventor： KwonSun SUN ,  SeungHwan LEE ,  Maxime BLANGERO ,  Bernard TONNON ,  Liang ZHU ,  JiHye KIM

IPC: C01G53/00 ,  H01M10/0525

CPC classification number: C01G53/006 ,  H01M10/0525 ,  C01P2006/40 ,  C01P2004/61 ,  C01P2006/80

Abstract: A powderous positive electrode active material for lithium ion secondary battery having particles comprising Li, M, and O, said particles having a Li/M molar ratio superior or equal to 0.98 and inferior or equal to 1.10, said powderous positive electrode active material being characterized in that said powder has a flow index of at least 0.10 and at most 0.30 when said powder has a D50 of at least 4.0 μm and of at most 6.0 μm or said powder has a flow index of at least 0.10 and of at most 0.20 when said powder has a D50 superior to 6.0 μm and of at most 10.0 μm, wherein the D50 is the median particle size of the powder.