Abstract:
Process for making a coated oxide material wherein said process comprises the following steps: (a) providing a particulate material selected from lithiated nickel-cobalt aluminum oxides, lithium cobalt oxide, lithiated cobalt-manganese oxides and lithiated layered nickel-cobalt- manganese oxides, (b) treating said particulate material with an aqueous medium, (c) removing said aqueous medium, (d) drying said treated particulate material, (e) treating said particulate material from step (d) with a metal amide or alkyl metal compound, (f) treating the material obtained in step (e) with moisture or an oxidizing agent, and, optionally, repeating the sequence of steps (e) and (f).
Abstract:
Process for making a partially coated electrode active material wherein said process comprises the following steps: (a) providing an electrode active material according to general formula Li 1+x TM 1-x 0 2 , wherein TM is Ni and at least one of Co and Mn, and, optionally, at least one element selected from Al, Mg, Ba, B, and transition metals other than Ni, Co, and Mn, and x is in the range of from -0.05 to 0.2, (b) treating said electrode active material with a compound according to the general formula (H 2 AI-OR 1 ) 2 wherein R 1 is selected from C 2 -C 6 -alkyl, followed by an after-treatment step selected from (c) treating the material obtained from step (b) with an oxidizing agent, (d) treating the material obtained from step (b) with HP, and (e) treating the material obtained from step (b) with a phosphorus-bearing reagent selected from H 3 PO 4 , fluorophosphoric acid and difluorophosphoric acid.
Abstract:
Process for making an electrode active material for a lithium ion battery, said process comprising the following steps: (a) Contacting a mixture of (A) a precursor of a mixed oxide according to general formula Li 1+x TM 1-x O 2 , wherein TM is a combination of two or more transition metals selected from Mn, Co and Ni, optionally in combination with at least one more metal selected from Ba, Al, Ti, Zr, W, Fe, Cr, K, Mo, Nb, Mg, Naand V, and x is in the range of from zero to 0.2, and (B) at least one lithium compound, with (C) Br 2 , I 2 , or at least one compound selected from carbon perhalides selected from the bromides and iodides, and interhalogen compounds comprising bromine or iodine, and (b) Subjecting said mixture to heat treatment at a temperature in the range of from 700 to 1000°C.
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:
Process for making an electrode active material wherein said process comprises the follow-ing steps: (a) Providing a hydroxide TM(OH)2 or an oxyhydroxide of TM wherein TM is one or more metals and contains Mn and, optionally, Co, and from 85 to 95 mol% Ni, referring to the sum of Ni, Co and Mn, (b) Drying said hydroxide TM(OH)2 or oxyhydroxide of TM at a temperature in the range of from 400 to 600°C, thereby obtaining an oxide or oxyhydroxide of TM with a residual moisture content of from 200 to 500 ppm, (c) mixing said oxide or oxyhydroxide from step (b) with a source of lithium and with at least one compound of Mg or Al and with at least one compound of Ti or Zr, (d) treating the mixture obtained from step (c) thermally at a temperature in the range of from 550 to 875°C.
Abstract:
Process for the manufacture of a cathode active material comprising the steps of (a) providing a particulate electrode active material according to general formula Li1+xTM1-xO2, wherein TM is Ni and, optionally, at least one element selected from Al, Mg, Ba, and transition metals other than Ni, and x is in the range of from -0.05 to 0.2, wherein at least 50mole-% of TM is Ni, (b) adding an aqueous medium that contains LiOH in dissolved form to the particulate electrode active material provided in step (a), and (c) removing the liquid phase by a solid-liquid separation method, and (d) at least partially recycling the liquid phase from step (c) for a treatment step in analogy to step (b).
Abstract:
Process for making an electrode active material according to general formula Li 1+x TM 1-x O 2 , wherein TM is a combination of Ni and Co and Zr and at least one metal selected from Mn and Al, and, optionally, at least one of Mg, Ti, and W, wherein at least 60 mole-% is Ni, referring to the sum of Ni, Co and, if applicable, Mn and Al, and x is in the range of from zero to 0.2, said process comprising the following steps: (a) mixing (A) a mixed oxide or oxyhydroxide of Ni, Co and, if applicable, Mn, (B) at least one lithium compound selected from lithium hydroxide, lithium oxide and lithium carbonate, and (C) at least one oxide or hydroxide or oxyhydroxide of Zr with an average diameter D50 in the range of from 1 to 7 μm, and in compounds (C) that are selected from oxides of Zr, their crystallite size is in the range of from 5 to 20 nm and (b) Subjecting said mixture to heat treatment at a temperature in the range of from 700 to 1000°C.
Abstract:
The present invention is related to an electrode active material for a lithium-ion battery of general formula (I): Li 1+x (Ni a Co b Mn c M d ) 1-x O 2 wherein x is in the range of from zero to 0.1, a is in the range of from 0.1 to 0.5, b is in the range of from 0.4 to 0.9, c is in the range of from zero to 0.3, d is in the range of from zero to 0.1, M is selected from Al, B, Mg, W, Mo, Ti, Si and Zr, with a + b + c + d = 1 and a > c. In addition, the present invention is related to a method of manufacture of electrode active materials and to their use.
Abstract:
The present invention is directed towards a process for making an electrode active material according to general formula Li1+(TM1-yM1y)1-xO2, wherein TM includes a combination of Ni and at least one of Co, Mn and Al, M1 is selected from Nb and Ta, and at least one of Co, Mn and Al, and optionally at least one more metal selected from Mg, Al, Ti, Zr, and W, y is in the range of from 0.001 to less than 0.01, and x is in the range of from zero to 0.2, said process comprising the following steps: (a) mixing (A) a mixed oxide or (oxy)hydroxide of Mn, Co and Ni, and (B) at least one lithium compound selected from lithium hydroxide, lithium oxide and lithium carbonate, and (C) an amorphous compound of Nb or Ta, (b) Subjecting said mixture to heat treatment at a temperature in the range of from 700 to 1000°C, wherein at least 60 mole-% of the transition metal of TM is Ni.
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.