公开(公告)号：US11862795B2

公开(公告)日：2024-01-02

申请号：US17254559

申请日：2019-06-17

Applicant: BASF SE

Inventor： Christoph Erk ,  Thomas Letzelter ,  Markus Hoelzle ,  Carsten Sueling

IPC: H01M4/525 ,  C01G53/00 ,  H01M4/505 ,  H01M4/02

CPC classification number: H01M4/525 ,  C01G53/50 ,  H01M4/505 ,  C01P2002/52 ,  C01P2006/12 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

Abstract: Process for modifying an electrode active material according to general formula Li1+xTM1−xO2, wherein TM contains a combination of Ni and at least one transition metal selected from Co and Mn, and, optionally, at least one metal selected from Al, Ba, and Mg and, optionally, one or more transition metals other than Ni, Co, and Mn, wherein at least 75 mole-% of TM is Ni, and x is in the range of from −0.05 to 0.2, said process comprising the steps of (a) treating said Li1+xTM1−xO2 with an aqueous medium with a pH value of at least 5 and up to 14, (b) removing said aqueous medium from treated Li1+xTM1−xO2 by way of a solid-liquid separation, wherein steps (a) and (b) are commenced with a maximum time difference of 3 minutes. In addition, the present invention is directed towards Ni-rich electrode active materials.