Topsoe Battery Materials A/s

Jon Fold Von Bülow

Søren Dahl

Rainer Küngas

Gisela Arnold

Anni Stahl

Peter Axmann

Claudia Pfeifer

Wolfgang Weirather

The invention relates to a method of preparing a sodium metal oxide material comprising NaMCoO, 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≤δ≤0.2 and wherein the average length of primary particles of said sodium metal oxide material is between 2 and 10 μm, preferably between 5 and 10 μm. The invention also relates to such a material.

Sodium metal oxide material for secondary batteries and method of preparation

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 TiOSOand 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.

Introduction of titanium homogeneously into a solid material

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Copenhagen, Denmark

Jon Fold Von Bülow