| 摘要 |
Preparing precursors for transition metal mixed oxides, comprises: (a1) precipitating a material comprising metal oxide compounds (I) from aqueous solution at a pH value of 8-9, where the total concentration of the transition metals in the mother liquor is 50-2000 ppm; and (b1) separating the precipitated material from the mother liquor, where the particles of the materials have a spherical shape. Preparing precursors for transition metal mixed oxides, comprises: (a1) precipitating a material comprising metal oxide compounds of formula (M(CO 3) bO c(OH) dA1 mB1 e(SO 4) fX g(PO 4) h) (I) from aqueous solution at a pH value of 8-9, where the total concentration of the transition metals in the mother liquor is 50-2000 ppm; and (b1) separating the precipitated material from the mother liquor, where the particles of the materials have a spherical shape. M : one or more transition metals; A1 : Na or K; B1 : one or more metals of 1-3 groups of the periodic system, where Na and K are excluded; X : halide, nitrate or carboxylate; b : 0.75-0.98; c, d : 0-0.50, where c+d is 0.02-0.50; f, g : 0-0.05; e : 0-0.1; h : 0-0.10; and m : 0.002-0.1. Independent claims are included for: (1) the material comprising metal compounds (I); (2) preparing transition metal mixed oxides comprising thermal treatment of a mixture of the material comprising (I) and at least one lithium compound at 600-1000[deg] C; (3) transition metal mixed oxides obtained by the process; (4) electrode formulation obtained by mixing the transition metal mixed oxides with carbon in an electrically conductive form and optionally with at least one polymeric binder; and (5) electrochemical cell prepared using at least one electrode material comprising the transition metal mixed oxides or the electrode formulation. |
