公开(公告)号：WO2022069237A1

公开(公告)日：2022-04-07

申请号：PCT/EP2021/075440

申请日：2021-09-16

Applicant: BASF SE

Inventor： HAN, Zhenji ,  NAKAYAMA, Jumpei ,  KASHIWAGI, Junji ,  FUKUMITSU, Hitoshi ,  RAUSCHER, Frank ,  ERK, Christoph ,  LETZELTER, Thomas

IPC: C01G53/00 ,  H01M4/00

Abstract: Process for the manufacture of a cathode active material comprising the steps of (a) providing a particulate electrode active material according to general formula Li1+xTM1-xO2, wherein TM is Ni and, optionally, at least one element selected from Al, Mg, Ba, and transition metals other than Ni, and x is in the range of from -0.05 to 0.2, wherein at least 50mole-% of TM is Ni, (b) adding an aqueous medium that contains LiOH in dissolved form to the particulate electrode active material provided in step (a), and (c) removing the liquid phase by a solid-liquid separation method, and (d) at least partially recycling the liquid phase from step (c) for a treatment step in analogy to step (b).

公开(公告)号：WO2021180589A1

公开(公告)日：2021-09-16

申请号：PCT/EP2021/055628

申请日：2021-03-05

Applicant: BASF SE

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

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  C01G53/00 ,  H01M10/0525 ,  H01M4/02

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.