Abstract: A lithium positive electrode active material intermediate including less than 80 wt % spinel phase and a net chemical composition of LixNiyMn2-yO4-? wherein 0.9?x?1.1; 0.4?y?0.5; and 0.1??. Further, a process for the preparation of a lithium positive electrode active material with high tap density for a high voltage secondary battery where the cathode is fully or partially operated above 4.4 V vs. Li/Li+, comprising the steps of a)heating a precursor in a reducing atmosphere at a temperature of from 300° C. to 1200° C. to obtain a lithium positive electrode active material intermediate; b)heating the product of step a. in a non-reducing atmosphere at a temperature of from 300° C. to 1200° C.; wherein the mass of the product of step b. increases by at least 0.25% compared to the mass of the product of step a.

Abstract: The invention relates to a method of preparing a sodium metal oxide material comprising NaxMyCozO2-?, where M is one or more of the following elements: Mn, Cu, Ti, Fe, Mg, Ni, V, Zn, Al, Li, Sn, Si, Ga, Ge, Sb, W, Zr, Nb, Mo, Ta, 0.7?x?1.3, 0.9?y?1.1, 0?z<0.15, 0???0.2 and wherein the average length of primary particles of said sodium metal oxide material is between 2 and 10 ?m, preferably between 5 and 10 ?m. The invention also relates to such a material.

Abstract: The invention relates to a sodium metal oxide material for an electrode of a secondary battery, where the sodium metal oxide material comprises: NaxMyCozO2-?, where M contains one or more of the following elements: Mn, Cu, Ti, Fe, Mg, Ni, V, Zn, Al, Li, Sn, Sb, 0.7?x?1.3, 0.9?y?1.1, 0?z<0.15, 0??<0.2 and wherein the average length of primary particles of said sodium metal oxide material is between 3 and 10 ?m, preferably between 5 and 10 ?m. The invention also relates to a method for producing the sodium metal oxide material of the invention.

Abstract: The invention relates to a method for the precipitation of a solid material, where the method comprises: providing an aqueous metal ion solution, said metal ion solution comprising TiOSO4 and metal ions of a metal M, where M is one or more of the elements: Mg, Co, Cu, Ni, Mn, Fe; providing an aqueous carbonate solution; and mixing said aqueous metal ion solution and said aqueous carbonate solution thereby providing a solid material comprising titanium and a metal carbonate comprising said metal(s) M, where the titanium is homogeneously distributed within the solid material. The invention also relates to a solid material, a method of preparing a positive electrode material for a secondary battery from the solid material and the use of the solid material as a precursor for the preparation of a positive electrode material for a secondary battery.

Abstract: A lithium positive electrode active material intermediate including less than 80 wt % spinel phase and a net chemical composition of LixNiyMn2-yO4-? wherein 0.9?x?1.1; 0.4?y?0.5; and 0.1??. Further, a process for the preparation of a lithium positive electrode active material with high tap density for a high voltage secondary battery where the cathode is fully or partially operated above 4.4 V vs. Li/Li+, comprising the steps of a)heating a precursor in a reducing atmosphere at a temperature of from 300° C. to 1200° C. to obtain a lithium positive electrode active material intermediate; b)heating the product of step a. in a non-reducing atmosphere at a temperature of from 300° C. to 1200° C.; wherein the mass of the product of step b. increases by at least 0.25% compared to the mass of the product of step a.

Abstract: A lithium positive electrode active material intermediate comprising less than 80 wt % spinel phase and a net chemical composition of LixNiyMn2-yO4-? wherein 0.9?x?1.1; 0.4?y?0.5; and 0.1??; where the lithium positive electrode active material intermediate has been heat treated in a reducing atmosphere at a temperature of from 300° C. to 1200° C. A process for the preparation of a lithium positive electrode active material with high tap density for a high voltage secondary battery where the cathode is fully or partially operated above 4.4 V vs. Li/Li+, comprising the steps of a) heating a precursor in a reducing atmosphere at a temperature of from 300° C. to 1200° C. to obtain a lithium positive electrode active material intermediate; b) heating the product of step a. in a non-reducing atmosphere at a temperature of from 300° C. to 1200° C.

Abstract: A lithium positive electrode active material intermediate comprising less than 80 wt % spinel phase and a net chemical composition of LixNiyMn2-yO4-? wherein 0.9?x?1.1; 0.4?y?0.5; and 0.1??; where the lithium positive electrode active material intermediate has been heat treated in a reducing atmosphere at a temperature of from 300° C. to 1200° C. A process for the preparation of a lithium positive electrode active material with high tap density for a high voltage secondary battery where the cathode is fully or partially operated above 4.4 V vs. Li/Li+, comprising the steps of a) heating a precursor in a reducing atmosphere at a temperature of from 300° C. to 1200° C. to obtain a lithium positive electrode active material intermediate; b) heating the product of step a. in a non-reducing atmosphere at a temperature of from 300° C. to 1200° C.