公开(公告)号：US20210020926A1

公开(公告)日：2021-01-21

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

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.

公开(公告)号：US20210399291A1

公开(公告)日：2021-12-23

申请号：US17309205

申请日：2019-11-11

Applicant: BASF SE

Inventor： Maraike AHLF ,  Torsten MAEURER ,  Christoph ERK ,  Jacob HAAG ,  Heino SOMMER

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

Abstract: Process for making a coated oxide material wherein said process comprises the following steps: (a) providing a particulate material selected from lithiated nickel-cobalt aluminum oxides, lithium cobalt oxide, lithiated cobalt-manganese oxides and lithiated layered nickel-cobalt-manganese oxides, (b) treating said particulate material with an aqueous medium, (c) removing said aqueous medium, (d) drying said treated particulate material, (e) treating said particulate material from step (d) with a metal amide or alkyl metal compound, (f) treating the material obtained in step (e) with moisture or an oxidizing agent, and, optionally, repeating the sequence of steps (e) and (f).