Abstract: Spherical particles comprising (A) at least one mixed transition metal hydroxide or mixed transition metal carbonate of at least 3 different transition metals selected from nickel, cobalt, manganese, iron, chromium and vanadium, (B) at least one fluoride, oxide or hydroxide of Ba, Al, Zr or Ti, where the transition metals in transition metal hydroxide (A) or transition metal carbonate (A) are predominantly in the +2 oxidation state, where fluoride (B) or oxide (B) or hydroxide (B) is present to an extent of at least 75% in an outer shell of the spherical particles in the form of domains and is encased to an extent of at least 90% by transition metal hydroxide (A) or transition metal carbonate (A).

Abstract: The present invention relates to a process for the preparation of particles comprising at least one compound according to general formula (I) M1aM2bM3cOoNnFf (I) wherein M1, M2, M3 O, N, F, a, b, c, o, n and f have the following meanings: M1 at least one alkaline metal, M2 at least one transition metal in oxidation state +2, M3 at least one non-metal chosen form S, Se, P, As, Si, Ge and/or B, O oxygen, N nitrogen, F fluorine, a 0.8-4.2, b 0.8-1.9, c 0.8-2.2, o 1.0-8.4, n 0-2.0 and f 0-2.

Abstract: A process for preparing transition metal mixed oxide precursors, including: (A) precipitating, from aqueous solution at a pH of 8.0 to 9.0, a compound of formula (I): M(CO3)bOc(OH)dAmBe(SO4)fXg(PO4)h??(I), wherein: M is one or more transition metals, A is sodium or potassium, B is one or more metals of groups 1 to 3, excluding Na and potassium, X is halide, nitrate or carboxylate, b is 0.75 to 0.98, c is zero to 0.50, d is zero to 0.50, where the sum (c+d) is 0.02 to 0.50, e is zero to 0.1, f is zero to 0.05, g is zero to 0.05, h is zero to 0.10, m is 0.002 to 0.1, and (B) separating the precipitated material from the mother liquor, where the particles of material of formula (I) have a spherical shape.

Abstract: Electrochemical cells comprise (A) at least one cathode comprising at least one lithiated Mn-containing compound having an Mn content of from 60 to 80 mol %, based on transition metal in cathode (A), (B) at least one anode comprising carbon in electrically conductive form, (C) at least one electrolyte comprising (a) at least one aprotic organic solvent, (b) at least one lithium salt, and (c) at least one organic compound having at least one Si—N single bond per molecule.

Abstract: The present invention relates to a process for the preparation of compounds of general formula (I) Lia-bM1bQ1-cM2cPd-eM3eOx (l), wherein Q has the oxidation state +2 and M1, M2, M3,a, b, c, d, e and x are: Q: Fe, Mn, Co, Ni, M1: Na, K, Rb and/or Cs, M2: Mg, Al, Ca, Ti, Co, Ni, Cr, V, Fe, Mn, wherein Q and M2 are different from each other,M3: Si, S, F a: 0.8-1.9, b: 0-0.3, c: 0-0.9, d: 0.8-1.9, e: 0-0.5, x: 1.

Abstract: Process for producing cathodes Process for producing cathodes comprising a cathode material comprising (A) at least one lithiated transition metal mixed oxide, (B) carbon in an electrically conductive modification, (C) at least one binder, and also (D) at least one film, wherein (a) a mixture comprising lithiated transition metal mixed oxide (A), carbon (B) and binder (C) is applied to film (D), (b) dried, (c) compacted to such an extent that the cathode material has a density of at least 1.8 g/cm3 to obtain a compacted blank and (d) after compaction as per (c) thermally treated at a temperature in the range from 35° C. below the melting point or the softening point of binder (C) to a maximum of 5° C. below the melting point or the softening point of binder (C).

Abstract: Process for preparing an aqueous cobalt sulfate solution having a pH of at least 4, wherein (a) metallic cobalt is dissolved in aqueous sulfuric acid in an atmosphere of low-oxygen air, of hydrogen or of inert gas and (b) the resulting acidic cobalt sulfate solution is treated with oxygen, oxygen-comprising gas or with a substance which can release oxygen in an aqueous medium.

Abstract: Process for preparing an aqueous cobalt sulfate solution having a pH in the range from 5 to 8, wherein (a) metallic cobalt is dissolved in aqueous sulfuric acid in an atmosphere of low-oxygen air, of hydrogen or of inert gas and (b) the resulting acidic cobalt sulfate solution is purified in an ion exchanger.

Abstract: Process for preparing lithium mixed metal oxides which comprise essentially lithium, manganese, cobalt and nickel as metal atoms and have a stoichiometric ratio of lithium to the total transition metals of greater than 1, which comprises a) the preparation of a mixture designated as intermediate (B) which comprises essentially lithium-comprising mixed metal hydroxides and lithium-comprising mixed metal oxide hydroxides, where manganese, cobalt and nickel are comprised in the ratio (1-a-b):a:b and the oxidation state averaged over all ions of manganese, cobalt and nickel is at least 4-1.75a-1.75b, where 0?a?0.5 and 0.1?b?0.8, by a thermal treatment carried out with continual mixing and in the presence of oxygen of a mixture (A) comprising at least one transition metal compound and at least one lithium salt (L), during which L does not melt, and b) the thermal treatment carried out without mixing and in the presence of oxygen of the intermediate (B).

Abstract: Process for preparing precursors for transition metal mixed oxides, wherein (A) an optionally basic transition metal carbonate is treated thermally at temperatures in the range from 200 to 900° C., (B) washed one or more times, and (C) then dried.

Abstract: Electrochemical cells comprise (A) at least one cathode comprising at least one lithiated Mn-containing compound having an Mn content of from 60 to 80 mol %, based on transition metal in cathode (A), (B) at least one anode comprising carbon in electrically conductive form, (C) at least one electrolyte comprising (a) at least one aprotic organic solvent, (b) at least one lithium salt, and (c) at least one organic compound having at least one Si—N single bond per molecule.

Abstract: A process for batchwise preparation of carbonates of at least two transition metals which may comprise hydroxide(s) of the corresponding transition metals, which comprises combining at least one aqueous solution comprising at least two transition metal salts having cations of at least two different transition metals overall with at least one solution of at least one carbonate or hydrogencarbonate of at least one alkali metal or ammonium, introducing a stirrer power of at least 0.25 W/l, and keeping the reaction volume essentially constant during the admixing with alkali metal (hydrogen)carbonate by removing liquid phase while adding solution of alkali metal (hydrogen)carbonate or alkali metal hydroxide.

Abstract: A material of the general formula (I) LixNiaCobMncOz ??(I) in which the variables are each defined as follows: 0.2?a?0.5, 0.0?b?0.4, 0.4?c?0.65, 1.1?x?1.3, x+a+b+c?0.2?z?x+a+b+c+0.2 and a+b+c=1 where c/a?1.2, and where the material has a BET surface area of at least 3 m2/g, and production of the inventive materials and use thereof.

Abstract: A mixture useful as an electrolyte in lithium ion batteries and use thereof are provided. Lithium ion batteries with good performance, especially good cyclability after prolonged operation are obtained. The mixture contains an aprotic organic solvent, a cyclic compound containing C1-C10-alkyl, C3-C10-cycloalkyl, benzyl or C6-C14-aryl, water, optionally an additive and a lithium salt.

Abstract: The present invention relates to electrochemical cells comprising (A) at least one cathode comprising at least one lithium ion-containing transition metal compound, (B) at least one anode, and (C) at least one layer comprising (a) at least one chemical compound which comprises at least one organic radical which derives from an organic chelate ligand, and (b) optionally at least one binder. The present invention further relates to the use of inventive electrochemical cells, and to lithium ion batteries comprising at least one inventive electrochemical cell.

Abstract: Process for producing electrode materials, wherein (a) (A) at least one iron compound in which Fe is present in the oxidation state +2 or +3, (B) at least one phosphorus compound, (C) at least one lithium compound, (D) at least one carbon source which can be a separate carbon source or at the same time at least one iron compound (A) or phosphorus compound (B) or lithium compound (C), (E) optionally at least one reducing agent, (F) optionally at least one further metal compound which has a metal other than iron, (G) optionally water or at least one organic solvent, are mixed with one another, (b) spray dried together by means of at least one apparatus which employs at least one spray nozzle for spraying and (c) thermally treated at temperatures in the range from 350 to 1200° C.

Abstract: The present invention relates to a process for preparing transition metal hydroxides with a mean particle diameter in the range from 6 to 12 ?m (D50), which comprises combining, in a stirred vessel, at least one solution of at least one transition metal salt with at least one solution of at least one alkali metal hydroxide to prepare an aqueous suspension of transition metal hydroxide, and, in at least one further compartment, continuously introducing a mechanical power in the range from 50 to 10 000 W/l in a proportion of the suspension in each case, based on the proportion of the suspension, and then recycling the proportion into the stirred vessel.

Abstract: A process for preparing transition metal carbonates with a mean particle diameter in the range from 6 to 19 ?m (D50), which comprises combining, in a stirred vessel, at least one solution of at least one transition metal salt with at least one solution of at least one alkali metal carbonate or alkali metal hydrogencarbonate to prepare an aqueous suspension of transition metal carbonate, and, in at least one further compartment, continuously introducing a mechanical power in the range from 50 to 10 000 W/l in a proportion of the suspension in each case, based on the proportion of the suspension, and then recycling the proportion into the stirred vessel.

Abstract: A process for preparing transition metal mixed oxide precursors, including: (A) precipitating, from aqueous solution at a pH of 8.0 to 9.0, a compound of formula (I): M(CO3)bOc(OH)dAmBe(SO4)fXg(PO4)h??(I), wherein: M is one or more transition metals, A is sodium or potassium, B is one or more metals of groups 1 to 3, excluding Na and potassium, X is halide, nitrate or carboxylate, b is 0.75 to 0.98, c is zero to 0.50, d is zero to 0.50, where the sum (c+d) is 0.02 to 0.50, e is zero to 0.1, f is zero to 0.05, g is zero to 0.05, h is zero to 0.10, m is 0.002 to 0.1, and (B) separating the precipitated material from the mother liquor, where the particles of material of formula (I) have a spherical shape.

Abstract: Process for preparing precursors for transition metal mixed oxides, wherein (A) an optionally basic transition metal carbonate is treated thermally at temperatures in the range from 200 to 900° C., (B) washed one or more times, and (C) then dried.