Basf Se Corporation

Carsten Sueling

Wolfgang Rohde

Marta Reinoso Garcia

Michael Klemens Mueller

Aleksei Volkov

Ivana Krkljus

Thomas Schmidt

Verena Mormul

Frank Jaekel

Rainer Eskuchen

Juergen Gert Tropsch

Armin Stamm

Juergen Detering

Kati Schmidt

Frederic Bauer

Markus Hoelzle

Maraike Ahlf

Gazi Tuerkoglu

Heino Sommer

Thomas Letzelter

Constanze Franzke

Christoph Erk

Birgit Gerke

Kathrin Michel

Nils-Olof Joachim Born

Frank Rauscher

Christopher Gump

Robert Hall

Markus Groner

Joseph Spencer Ii

Process for manufacturing granules or powders comprising the steps of (a) providing an aqueous solution or slurry of (A) at least one chelating agent according to general formula (I a) [CH—CH(COO)—N(CH—COO)]MH(I a) wherein M is selected from alkali metal cations and ammonium, same or different, and x is in the range of from 0.01 to 1.0 or (I b) [OOC—CHCH—CH(COO)—N(CH—COO)]MH(I b) wherein M is as defined above, and x in formula (I b) is in the range of from 0.01 to 2.0, and (B) at least one polymer selected from (B1) polyaspartates with an average molecular weight Min the range of from 1,000 to 20,000 g/mole, and (B2) copolymers comprising, in copolymerized form, (α) at least one ester of an ethylenically unsaturated mono- or dicarboxylic acid, and (β) at least one ethylenically unsaturated N-containing monomer, and (b) spray drying or granulating said solution or slurry.

Granules or powders and methods for their manufacture

Disclosed herein is a process for making an electrode active material, including: (a) forming a mixture, (b) transferring the mixture into saggars, crucibles or open cups, (c) calcining the mixture at a temperature in the range of from 700 to 1000° C., (d) cooling down the resultant electrode active material, (e) applying a robot to take at least two samples of 10 mg to 10 g of every saggar, crucible or open cup to be analyzed, or per defined period of time, respectively, (f) transferring the samples to another robot or to another part of the same robot, where the robot makes an electrode material mix from samples of the same saggar, crucible or open cup, and (g) transferring the electrode material mix to a test unit to perform electrochemical tests, where the robot performs steps (f) to (g) with several samples in parallel.

Process for making an electrode active material

Process for modifying an electrode active material according to general formula LiTMO2, 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 LiTMO2 with an aqueous medium with a pH value of at least 5 and up to 14, (b) removing said aqueous medium from treated LiTMO2 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.

Method for processing Ni-rich electrode active materials

Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250&#xb0; C., (b) withdrawingpowder or granules, respectively, from the spray-dryer or spray-granulator, respectively, (c) separating off fines from said powder or granules, wherein said fines have a maximum particle diameter of 350 &#x3bc;m, (d) separating off lumps from said powder or granules, wherein said lumps have a particle diameter of 1,500 &#x3bc;m or more, (e) milling said lumps to a maximum particle diameter of 500 &#x3bc;m, (f) re-introducing said fines from step (c) and milled lumps from step (e) into the spray-dryer or spray-granulator, wherein the share of fines is in the range of from 0.5 to 20% by weight of the total chelating agent (A) withdrawn in step (b) and the share of milled lumps is in the range of from 5 to 60% by weight of the total chelating agent (A) withdrawn in step (b).

Powders and granules and process for making such powders and granules

Process for manufacturing granules of salts of at least two aminopolycarboxylic acids (A), com-prising the steps of (a) providing an aqueous solution of (A1) at least one alkali metal salt of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 95%, (A2) at least one alkali metal salt of L- and D-enantiomers of glutamic acid diacetic acid (GLDA) or of enantiomerically pure L-GLDA, the weight ratio of (A1) and (A2) being in the range of from 1:9 to 9:1, (b) spray granulating said solution with a gas inlet temperature of at least 125&#xb0; C. Additionally, the present invention relates to granules and to their use.

Process for manufacturing MGDA/GLDA granules, granules, and their use

The present invention is directed towards mixtures comprising (A) 90 to 99.999% by weight of racemic methyl glycine diacetic acid (MGDA) or of MGDA with predominantly the L-isomer in an enantiomeric excess of up to 9.5% or their respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, and (B) in total 0.001 to 10% by weight of the diacetic acid derivative of aspartate as free acid or as mono-, di-, tri- or tetraalkali metal salt or as mono-, di-, tri- or tetraammonium salt, percentages referring to the sum from (A) and (B).

Mixtures of chelating agents, and process for making such mixtures

Electrode materials comprising (a) at least one compound of general formula (I) Li[NiCOMnM1]O(I) the integers being defined as follows: x is in the range of from 0.01 to 0.05, a is in the range of from 0.3 to 0.6, b is in the range of from zero to 0.35, c is in the range of from 0.2 to 0.6, d is in the range of from zero to 0.05, a+b+c+d=1 Mis at least one metal selected from Ca, Zn, Fe, Ti, Ba, Al, (b) at least one compound of general formula (II) LiFeM2PO(II) y is in the range of from zero to 0.8 Mis at least one element selected from Ti, Co, Mn, Ni, V, Mg, Nd, Zn and Y, that contains at least one further iron-phosphorous compound, in form of a solid solution in compound (b) or in domains, (c) carbon in electrically conductive modification.

Electrode material including lithium transition metal oxide, lithium iron phosphate, further iron-phosphorous compound. and carbon, and lithium battery including the same

Electrode material comprising (a) at least one compound of general formula (I) LiFeMPO(I) y is in the range of from zero to 0.4 Mis at least one element selected from Co, Mn, Ni, V, Mg, Nd, Zn and Y, that contains at least one further iron-phosphorous compound, and in the range of from 0.05 to 0.25% by weight of sulphur and in the range of from 0.003 to 0.5% by weight of Ti, (b) carbon in electrically conductive modification.

Electrode materials, their manufacture and use

Mixtures comprise (A) 90 to 99.9% by weight of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-enantiomer with an enantiomeric excess (ee) in the range of from 10 to 99%, and (B) in total 0.1 to 10% by weight of the diacetic acid derivative of at least one amino acid selected from valine, leucine, isoleucine, and tyrosine, as free acids or respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, percentages referring to the sum from (A) and (B).

Mixtures of chelating agents including an L-enantiomer-rich MGDA, and process for making such mixtures

Electrode materials comprising (a) at least one component of general formula (I) Li[NiCOMnM1]O(I) the integers being defined as follows: x is in the range of from 0.01 to 0.05, a is in the range of from 0.3 to 0.6, b is in the range of from zero to 0.35, c is in the range of from 0.2 to 0.6, d is in the range of from zero to 0.05, a+b+c+d=1 Mis at least one metal selected from Ca, Zn, Fe, Ti, Ba, Al, (b) at least one component of general formula (II) LiFeMPO.m lithium phosphate (II) y is in the range of from zero to 0.8 Mis at least one element selected from Co, Mn, Ni, V, Mg, Nd, Zn, and Y, m is selected from 0.01 to 0.15 (c) carbon in electrically conductive modification.

Electrode materials for lithium ion batteries

The current invention is directed towards mixtures, comprising (A) in the range of from 15 to 85% by weight of at least one compound of the general formula (I) (B) in the range of from 85 to 15% by weight of at least one compound of the general formula (II), wherein the integers are defined as follows: Ris C-C-alkyl, linear or branched, Ris C-C-alkyl, linear or branched, G, Gare different or identical and selected from monosaccharides with 4 to 6 carbon atoms, x, y are numbers in the range of from 1.1 to 4, Ris C-C-alkyl, linear or branched, the percentages referring to the total mixture. 

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Frankenthal, Germany

Carsten Sueling