公开(公告)号：WO2022069236A1

公开(公告)日：2022-04-07

申请号：PCT/EP2021/075438

申请日：2021-09-16

Applicant: BASF SE

Inventor： ERK, Christoph ,  SOMMER, Heino ,  MICHEL, Kathrin ,  RAUSCHER, Frank ,  BORN, Nils-Olof, Joachim ,  ROHDE, Wolfgang ,  SUELING, Carsten ,  GERKE, Birgit

IPC: C01G53/00

Abstract: Process for the manufacture of a fluoride doped cathode active material wherein said process comprises the steps of (a) providing a particulate oxide or (oxy)hydroxide of TM wherein TM comprises nickel and at least one metal selected from cobalt and manganese, wherein said particulate oxide or (oxy)hydroxide has an average particle diameter (D50) in the range of from 3 to 16 µm, (b) providing a source of lithium that contains 0.01 to 2.5 % by weight of fluoride, uniformly dispersed within said source of lithium, (c) mixing said oxide or (oxy)hydroxide of TM with said fluoride-containing source of lithium and, optionally, with additional source of lithium containing less fluoride, and, optionally, with one or more dopants based on at least one metal other than lithium, (d) treating the mixture obtained from step (c) thermally.

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.