公开(公告)号：WO2020002024A1

公开(公告)日：2020-01-02

申请号：PCT/EP2019/065862

申请日：2019-06-17

Applicant: BASF SE

Inventor： ERK, Christoph ,  LETZELTER, Thomas ,  HOELZLE, Markus ,  SUELING, Carsten

IPC: C01G53/00 ,  H01M4/525

Abstract: Process for modifying an electrode active material according to general formula Li 1+x TM 1-x O2, wherein TM contains a combination of Ni and at least one transition metal selected from Co and Mn, and, optionally, at least one metal selected from Al, Ba, and Mg and, optionally, one or more transition metals other than Ni, Co, and Mn, wherein at least 75 mole-% of TM is Ni, and x is in the range of from -0.05 to 0.2, said process comprising the steps of (a) treating said Li 1+x TM 1-x O2 with an aqueous medium with a pH value of at least 5 and up to 14, (b) removing said aqueous medium from treated Li 1+x TM 1-x O2 by way of a solid-liquid separation, wherein steps (a) and (b) are commenced with a maximum time difference of 3 minutes. In addition, the present invention is directed towards Ni-rich electrode active materials.

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：WO2021110692A1

公开(公告)日：2021-06-10

申请号：PCT/EP2020/084147

申请日：2020-12-01

Applicant: BASF SE

Inventor： RAUSCHER, Frank ,  KIM, Young, Jin ,  HAAG, Jacob ,  LETZELTER, Thomas ,  SOMMER, Heino

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/02

Abstract: Process for making a particulate 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 a combination of Ni, Co and, optionally, Mn, and, optionally, at least one metal selected from Al, Nb, Ta, Mg, Ti and Zr, and x is in the range of from zero to 0.2, wherein at least 60 mole-% of the transition metal of TM is Ni, (b) reacting the electrode active material by treating said electrode active material with a metal alkoxide or metal amide or alkyl metal compound in the gas phase, (c) treating the material obtained in step (b) with moisture in the gas phase, (d) and, optionally, repeating the sequence of steps (b) and (c) once to times, (e) mixing the resultant material with a particulate acidic compound of boron, tungsten, titanium or zirconium, and (f) heat-treating the electrode active material so obtained in an oxidizing atmosphere at a temperature in the range of from 200 to 500°C for one to 4 hours.