公开(公告)号：US20230223529A1

公开(公告)日：2023-07-13

申请号：US17999218

申请日：2021-06-07

Applicant: BASF SE

Inventor： Yohko TOMOTA ,  Christoph ERK ,  Pascal HARTMANN

IPC: H01M4/525 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/62 ,  H01M4/583 ,  H01M10/0562

CPC classification number: H01M4/525 ,  H01M4/043 ,  H01M4/364 ,  H01M4/505 ,  H01M4/622 ,  H01M4/583 ,  H01M10/0562 ,  H01M2004/027

Abstract: The present invention is directed towards a process for making an electrode wherein the process comprises the following steps (a) providing a particulate lithiated transition metal oxide according to the formula Li1+xTM1-xO2 wherein x is in the range of from zero to 0.1 and TM contains nickel and at least one of Co, Mn and Al, (b) mixing the lithiated transition metal oxide from step (a) with carbon in electrically conductive form, (c) exposing the mixture obtained in step (b) to a pressure in the range of from 100 to 500 MPa over a period of time of from one second to one minute, thereby causing cracks in at least some of the particles of the electrode active material, (d) mixing the mixture from step (c) with a binder polymer and, optionally, with further carbon in electrically conductive form and with a solvent, (e) applying the mixture from step (d) to a metal foil.

公开(公告)号：US20220194814A1

公开(公告)日：2022-06-23

申请号：US17594006

申请日：2020-04-02

Applicant: BASF SE

Inventor： Thorsten BEIERLING ,  Simon SCHROEDLE ,  James SIOSS ,  Daniela PFISTER ,  KALO Benedikt ,  Christoph ERK ,  Brandon LONG ,  Christian RIEMANN ,  Christine AMMONS ,  Yohko TOMOTA ,  Phil Jack HOLZMEISTER

IPC: C01G53/00 ,  B01J19/18 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: Process for precipitating a mixed hydroxide of TM wherein TM comprises Ni and at least one of Co and Mn and, optionally, Al, Mg, Zr or Ti, from an aqueous solution of salts of such transition metals or of Al or of Mg, wherein such process is carried out in a stirred vessel and comprises the step of introducing an aqueous solution of alkali metal hydroxide and an aqueous solution of transition metal salts through at least two inlets into said stirred vessel wherein the distance of the locations of introduction of salts of TM and of alkali metal hydroxide is equal or less than 6 times the hydraulic diameter of the tip of the inlet pipe of the alkali metal hydroxide.