公开(公告)号：US20210328218A1

公开(公告)日：2021-10-21

申请号：US17250954

申请日：2019-09-20

Applicant: BASF SE

Inventor： Christoph ERK ,  Zhenji HAN ,  Junji KASHIWAGI ,  Suhao WEI ,  Takayuki YAMAMURA ,  Daisuke MORITA ,  Martin SCHULZ-DOBRICK

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04

Abstract: Process for making a partially coated electrode active material wherein said process comprises the following steps: (a) Providing an electrode active material according to general formula Li1+1TM1−xO2, wherein TM comprises Ni and, optionally, at least one transition metal selected from Co and Mn, and, optionally, at least one element selected from Al, Mg, Ba and B, transition metals other than Ni, Co, and Mn, and x is in the range of from −0.05 to 0.2, wherein at least 50 mole-% of the transition metal of TM is Ni, (b) treating said electrode active material with an aqueous formulation containing an inorganic aluminum compound dispersed or slurried in water, (c) separating off the water, (d) thermal treatment of the material obtained from step (c).