公开(公告)号：US20230406723A1

公开(公告)日：2023-12-21

申请号：US18247275

申请日：2021-09-16

Applicant: BASF SE

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

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

CPC classification number: C01G53/50 ,  H01M4/505 ,  H01M4/525 ,  C01P2002/54 ,  C01P2006/40 ,  H01M2004/028

Abstract: Described herein is a process for manufacture of a cathode active material including the steps of



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

公开(公告)号：US20230378428A1

公开(公告)日：2023-11-23

申请号：US18247067

申请日：2021-09-16

Applicant: BASF SE

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

IPC: H01M4/04 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/0471 ,  H01M4/525 ,  H01M4/625 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/54

Abstract: Described herein is a process for the manufacture of a fluoride doped cathode active material, where said process includes the steps of



(a) providing a particulate oxide or (oxy)hydroxide of transition metals (TM), where TM includes nickel and at least one metal selected from cobalt and manganese, and where said particulate oxide or (oxy)hydroxide has an average particle diameter (D50) in a range of from 3 to 16 μm,
(b) providing a source of lithium that includes 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-including source of lithium and, optionally, with an additional source of lithium including less fluoride, and, optionally, with one or more dopants based on at least one metal other than lithium, and
(d) treating the mixture obtained from step (c) thermally.