METHOD FOR PROCESSING MATERIALS OF METAL-ION BATTERIES BASED ON VANADIUM AND TITANIUM COMPOUNDS Russian patent published in 2023 - IPC H01M10/54 H01M4/00 

FIELD: electrical engineering.

SUBSTANCE: methods for the disposal and processing of electrode materials of chemical current sources, including, but not limited to, lithium-, sodium-, potassium-ion batteries, and can be used to obtain secondary material resources. Increasing the efficiency of processing titanium and vanadium-containing electrode materials by increasing the degree of extraction of vanadium or titanium, namely more than 80 wt.% in terms of the original substance. The compositions A_nV_y(PO₄)_m (F_xO_z) are processed as secondary materials, where A - Li, Na, K, A_nTi_yO_x, where A - Li, Na, K, A_nTi_y(PO₄)_m(F_1-xO_x), where A - Li, Na, K, by mechanical separation of the electrode material from the current collector metal-ion battery, dissolving the electrode material in a sulfuric acid solution of hydrogen peroxide, and/or a solution of an inorganic salt in an acidic or alkaline medium, and/or a solution of an organic complexing reagent in an acidic or alkaline medium at a temperature of 20-95°C, isolation of oxides and/or salts of vanadium, including hydrated ones, and chemical bonding of anions into insoluble compounds by adding a soluble salt of an alkaline earth metal.

EFFECT: reduction of the amount of used caustic acids and alkalis, energy costs, environmental friendliness and safety for the environment.

30 cl, 1 dwg, 13 ex