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.
Abstract:
Process for making a precursor of an electrode active material comprising the steps of: (a) making an oxide, (oxy) hydroxide, hydroxide or carbonate comprising nickel by (co-)precipitation in an aqueous medium, (b) separating said oxide, (oxy) hydroxide, hydroxide or carbonate from said aqueous medium by a solid-liquid separation method, (c) optionally, drying the solid residue from step (b) in air, (d) applying a robot to take at least two samples of 10 mg to 10 g from the solid material from step (b) or (c), if applicable, (e) transferring said samples to another robot or to another part of the same robot, where the respective robot transfers the samples to at least one test unit to perform measurements with respect to at least one parameter selected from (e1) particle diameter, (e2) element distribution, and (e3) moisture content (e4) crystallographic properties in XRD, or (e5) specific surface (BET), (e6) sulfate content.
Abstract:
Process for making an electrode active material wherein said process comprises the following steps: (a) Providing a hydroxide TM(OH)2 or at least one oxide TMO or oxyhydroxide of TM or combination of at least two of the foregoing wherein TM contains at least 99 mol-% Ni and, optionally, in total up to 1 mol-% of at least one metal selected from Ti, Zr, V, Co, Zn, Ba, or Mg, (b) mixing said hydroxide TM(OH)2 or oxide TMO or oxyhydroxide of TM or combination with a source of lithium and an aqueous solution of a compound of Me wherein Me is selected from Al or Ga or a combination of the foregoing and wherein the molar amount of TM corresponds to the sum of Li and Me, (c) removing the water by evaporation, (d) treating the solid residue obtained from step (c) thermally at a temperature in the range of from 500 to 800°C in the presence of oxygen.
Abstract:
Articles, compositions, and methods involving ionically conductive compounds are provided. In some embodiments, the ionically conductive compounds are useful for electrochemical cells. The disclosed ionically conductive compounds may be incorporated into an electrochemical cell (e.g., a lithium-sulfur electrochemical cell, a lithium-ion electrochemical cell, an intercalated-cathode based electrochemical cell) as, for example, a protective layer for an electrode, a solid electrolyte layer, and/or any other appropriate component within the electrochemical cell. In certain embodiments, electrode structures and/or methods for making electrode structures including a layer comprising an ionically conductive compound described herein are provided.
Abstract:
The present invention relates to a slurry comprising i) an inorganic material, ii) a binder, and iii) an organic solvent of formula (I), wherein R 1 is H, d-Ce-Alkyl, R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 are independently from each other either H or Me, and n is O oM. The present invention further relates to the use of such slurries as a component for producing a solid structure, to a process for preparing a solid structure and to a process for preparing a cathode for a rechargeable electrochemical cell.
Abstract:
Particulate material of the composition Li 1+x TM 1-x O 2 wherein x is in the range of from –0.02 to + 0.05, TM comprises at least 93 mol-% nickel and (A) at least one element M 1 wherein M 1 is selected from Nb, Ta, Ti, Zr, W and Mo, (B) at least one element M 2 wherein M 2 is selected from B, Al, Mg and Ga, wherein said particulate material has an average particle diameter (D50) in the range of from 2 to 20 µm.
Abstract:
Process for making a coated oxide material, said process comprising the following steps: (a) providing a particulate material selected from lithiated nickel-cobalt aluminum oxides and lithiated layered nickel-cobalt-manganese oxides with a nickel content in the range of from 10 to 95 mole-% nickel, referring to the metals other than lithium in such particulate material, (b) optionally, treating said particulate material with an aqueous medium, followed by removing said aqueous medium, (c) treating said particulate material from step (a) or (b) with a metal amide or alkyl metal compound dissolved or slurried in an organic solvent, (d) removal of organic solvent employed in step (c).
Abstract:
Articles, compositions, and methods involving ionically conductive compounds are provided. In some embodiments, the ionically conductive compounds are useful for electrochemical cells. The disclosed ionically conductive compounds may be incorporated into an electrochemical cell (e.g., a lithium-sulfur electrochemical cell, a lithium-ion electrochemical cell, an intercalated-cathode based electrochemical cell) as, for example, a protective layer for an electrode, a solid electrolyte layer, and/or any other appropriate component within the electrochemical cell. In certain embodiments, electrode structures and/or methods for making electrode structures including a layer comprising an ionically conductive compound described herein are provided.
Abstract:
Process for making an electrode active material wherein said process comprises the following steps: (a) Providing an (oxy)hydroxide or oxide of TM wherein TM is a combination of metals and wherein TM contains Ni and at least one of Mn and Co; (b) treating said oxide or (oxy)hydroxide from step (a) with a non-aqueous or aqueous solution of a compound of M2 wherein M2 is selected from Ti, Zr, Nb or Ta; (c) removing the solvent(s), thereby obtaining a solid residue; (d) mixing the solid residue from step (c) with a source of lithium and, optionally, at least one compound of Ti or Al or Zr; (e) treating the mixture obtained from step (d) thermally at a temperature in the range of from 550 to 900°C.