LITHIUM-COBALT-OXIDE MATERIAL AND METHOD OF ITS PREPARATION Russian patent published in 2013 - IPC C01D15/02 C01G51/04 

FIELD: chemistry.

SUBSTANCE: invention can be used in chemical industry. Lithium-cobalt-oxide material has composition Li_1-xCo_1+xO₂, where x can take values from +0.2 to -0.2, constant sum of coefficients of atom content X_Li+Y_Co=2.0 and represents diamagnetic matrix based on crystallites Li_1-xCo_1+xO₂, partially containing cations Co³⁺ in octaedric oxygen coordination (Co³⁺ _Oh) in highly spin state. Highly spin cations Co³⁺ _Oh are localised in lithium positions of lithium layer in hexagonal (rhomboedric) structure of crystallites Li_1-xCo_1+xO₂. Fraction of lithium positions, occupied by highly-spin ions Co³⁺ _Oh, constitutes 0.1-0.2. Method of such material preparation includes mixing of lithium- and cobalt- containing precursors, humidifying precursor mixture, suspension evaporation, paste drying and further material burning. As cobalt-containing precursor used is nanodispersed Co²⁺ hydroxide, containing cations in tetraedric oxygen coordination Co²⁺ _Td. Sum of coefficients of X_Li+Y_Co=2.0 atom content in preserved constant in precursor mixtures.

EFFECT: invention makes it possible to obtain material for catalysts, cation-exchangers, lithium-cobalt-oxide cathode materials for re-chargeable lithium-ionic accumulators, molecular magnetics, spintronics, materials for superdense recording and reading of information.

6 cl, 7 dwg, 3 tbl, 1 ex