公开(公告)号：US20230087183A1

公开(公告)日：2023-03-23

申请号：US17906278

申请日：2021-03-22

Applicant: BASF SE

Inventor： Xiaohan WU ,  Doron AURBACH ,  Hadar SCLAR ,  Boris MARKOVSKY ,  Sandipan MAITI

IPC: H01M4/485 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

Abstract: Process for making a cathode active material for a lithium ion battery, said process comprising the following steps: (a) treating a mixed oxide according to general formula Li1+xTM1−xO2 with at least one aromatic di-, tri- or tetracarboxylic acid or with a combination of at least two of the foregoing, wherein TM is a combination of Mn and Ni and, optionally, at least one more metal selected from Ba, Al, Co, Ti, Zr, W, Fe, Cr, K, Mo, Nb, Ta, Mg and V, and x is in the range of from zero to 0.2, (b) subjecting said precursor to heat treatment a temperature in the range of from 500 to 800° C.

公开(公告)号：US20240266524A1

公开(公告)日：2024-08-08

申请号：US18565963

申请日：2022-06-07

Applicant: BASF SE

Inventor： Heino SOMMER ,  Xiaohan WU ,  Hubert GASTEIGER ,  Louis HARTMANN

IPC: H01M4/505 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/62 ,  H01M10/0525 ,  H01M50/437 ,  H01M50/44

CPC classification number: H01M4/505 ,  H01M4/0404 ,  H01M4/1391 ,  H01M4/622 ,  H01M4/625 ,  H01M10/0525 ,  H01M50/437 ,  H01M50/44

Abstract: Disclosed herein is a cathode containing a mass that includes:



(1) a lithium-containing cathode active material with a molar manganese content in the range of from 50 mol-% to 85 mol-% referring to metals other than lithium contained in the cathode active material,
(2) SiO2 in particulate form,
(3) carbon in electrically conductive form, and
(4) binder polymer.

公开(公告)号：US20240006586A1

公开(公告)日：2024-01-04

申请号：US18254429

申请日：2021-11-29

Applicant: BASF SE

Inventor： Xiaohan WU ,  Alexander Georg HUFNAGEL

IPC: H01M4/1391 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/04 ,  H01M4/525

CPC classification number: H01M4/1391 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/0471 ,  H01M4/525 ,  H01M2004/028

Abstract: Disclosed herein is an all-solid-state lithium-ion electrochemical cells including:



(A) a cathode including
(a) particulate electrode active material according to general formula Li1+xTM1-xO2, where TM is Ni and, optionally, at least one of Co and Mn, and, optionally, at least one element selected from the group consisting of 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, where said electrode active material is coated with a continuous layer containing an oxide of W or Mo and where said particulate electrode active material has an average particle diameter (D50) in the range of from 2 to 20 μm,
(B) an anode, and
(C) a solid electrolyte including lithium, sulphur and phosphorus.

公开(公告)号：US20230317926A1

公开(公告)日：2023-10-05

申请号：US18044164

申请日：2021-08-27

Applicant: BASF SE

Inventor： Xiaohan WU

IPC: H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M10/0525 ,  C01G53/00

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M4/505 ,  H01M4/485 ,  H01M10/0525 ,  C01G53/50 ,  C01P2006/40 ,  C01P2004/84 ,  C01P2006/12 ,  H01M2004/028

Abstract: Disclosed herein is a process for making an at least partially coated electrode active material. The process includes:



(a) providing an electrode active material according to general formula Li1+xTM1−xO2, where TM includes Ni, Mn and, optionally, Co and at least one metal selected from Al, Nb, Ta, Zr, Ti and Zr, where x is between 0.05 and 0.2, and where the Ni content is at least 55 mol-% referring to TM,
(b) treating said electrode active material with a metal alkyl compound,
(c) treating the material obtained in step (b) with an oxidant or moisture,
(d) treating the material obtained from step (c) with a compound according to formula M1OR1 where M1 is selected from the group consisting of Li, Na and K and where R1 is selected from the group consisting of isopropyl, n-butyl and tert.-butyl, and
(e) repeating the sequence of steps (b) to (d) from 1-30 times.