公开(公告)号：US11462732B2

公开(公告)日：2022-10-04

申请号：US16976252

申请日：2019-02-18

Applicant: BASF SE

Inventor： Benedikt Kalo ,  Torsten Maeurer ,  Regina Vogelsang

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

Abstract: Process for making a coated electrode active material wherein said process comprises the following steps: (a) providing a particulate electrode active material according to general formula Li1+xTM1−xO2, wherein TM is a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Mg, Al, Ba, Ti and Zr, and x is in the range of from zero to 0.2, wherein at least 15 mole-% of the transition metal of TM is Ni, (b) treating said electrode active material with a compound of M1, wherein M1 is selected from Li, Al, B, Mg, Si, Sn, and from transition metals, or a combination of at least two of the foregoing, with or without a solvent, wherein said compound of M1 does not act as a cathode active material on its own, (c) optionally, removing compound of M1 which is not deposited on said particulate electrode active material, (d) performing a post-treatment by heating the material obtained after the step (b) or (c), if applicable, at a temperature from 300 to 800° C. in a rotary kiln or pendulum kiln.