公开(公告)号：US20230060044A1

公开(公告)日：2023-02-23

申请号：US17758776

申请日：2021-03-05

Applicant: BASF SE

Inventor： Zhenji HAN ,  Suhao WEI ,  Martin SCHULTZ-DOBRICK ,  Hitoshi FUKUMITSU ,  Masatoshi MATSUMOTO ,  Jumpei NAKAYAMA ,  Junji KASHIWAGI ,  Daisuke MORITA

IPC: H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/04 ,  C01G53/00

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+xTM1-xO2, wherein TM is Ni and, optionally, at least one of Co and Mn, and, optionally, at least one element selected from Al, Mg, and Ba, transition metals other than Ni, Co, and Mn, and x is in the range of from zero 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 medium, (c) partially removing water by solid-liquid separation method, (d) treating the solid residue with an aqueous formulation of at least one heteropolyacid or its respective ammonium or lithium salt, (e) treating the residue thermally.

公开(公告)号：US20230361295A1

公开(公告)日：2023-11-09

申请号：US18246381

申请日：2021-09-16

Applicant: BASF SE

Inventor： Zhenji HAN ,  Masatoshi MATSUMOTO ,  Jumpei NAKAYAMA ,  Junji KASHIWAGI

IPC: H01M4/525 ,  H01M4/505 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M4/525 ,  H01M4/505 ,  H01M4/0471 ,  H01M4/626 ,  H01M2004/028

Abstract: Disclosed herein is a process for manufacturing a coated cathode active material. The process includes (a) providing a particulate electrode active material according to general formula Li1+xTM1−xO2, where TM includes Ni and optionally Co and/or Mn, optionally Al, Mg, and/or Ba, and transition metals other than Ni, Co, and Mn, and where x is between zero and 0.2, (b) treating said particulate electrode active material with an aqueous solution or slurry such that at least one element selected from Al, Sb, B, Mo, W, Si and P is deposited on the surface of said particulate electrode active material, (c) removing the water by filtration, (d) adding an aqueous solution of a compound of Al, B, or Sb to the solid residue obtained from step (c), thereby depositing Al, B, and/or Sb on the surface of said solid residue, and (e) treating the residue obtained from step (d) thermally.