公开(公告)号：US20240396022A1

公开(公告)日：2024-11-28

申请号：US18690856

申请日：2022-09-28

Applicant: BASF SE ,  TECHNISCHE UNIVERSITÄT MÜNCHEN

Inventor： Michael LENNARTZ ,  Hubert GASTEIGER ,  Louis HARTMANN ,  Cheuck Hin CHING

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/525

Abstract: Disclosed herein is a process for the manufacture of a cathode active material with a coreshell structure. The process includes the steps of: (a) providing a particulate electrode active material according to a general formula Li1+xTM1−xO2, where TM is a combination of metals and includes Ni and Mn, and, optionally, at least one element selected from Al, Mg, Ba and transition metals other than Ni and Mn, and x is in the range of from 0.075 to 0.2, where at least 50 mole-% of the metal of TM is Mn, (b) treating the particulate electrode active material with an aqueous buffer solution with a pH value in the range of from 2.0 to 10.5, (c) removing the liquid phase by a solid-liquid separation method, and (d) treating the residue from step (c) at a temperature in the range of from 180 to 750° C.

公开(公告)号：US20240266524A1

公开(公告)日：2024-08-08

申请号：US18565963

申请日：2022-06-07

Applicant: BASF SE

Inventor： Heino SOMMER ,  Xiaohan WU ,  Hubert GASTEIGER ,  Louis HARTMANN

IPC: H01M4/505 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/62 ,  H01M10/0525 ,  H01M50/437 ,  H01M50/44

CPC classification number: H01M4/505 ,  H01M4/0404 ,  H01M4/1391 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M50/437 ,  H01M50/44

Abstract: Disclosed herein is a cathode containing a mass that includes:



(1) a lithium-containing cathode active material with a molar manganese content in the range of from 50 mol-% to 85 mol-% referring to metals other than lithium contained in the cathode active material,
(2) SiO2 in particulate form,
(3) carbon in electrically conductive form, and
(4) binder polymer.