METHOD FOR PRODUCING ACTIVE ELECTRODE MATERIAL AND ACTIVE COMPOSITE ELECTRODE MATERIAL FOR METAL-ION BATTERIES, ACTIVE ELECTRODE MATERIAL AND ACTIVE COMPOSITE ELECTRODE MATERIAL, ELECTRODE PASTE, ELECTRODE AND METAL-ION BATTERY BASED ON ELECTRODE MATERIAL Russian patent published in 2023 - IPC H01M4/1391 H01M4/485 H01M10/54 

FIELD: materials science.

SUBSTANCE: invention relates to the technology for producing phosphates, oxophosphates and vanadium fluoride phosphates, which can be used as active electrode materials for metal-ion batteries. Compositions AV_1-xM_xPO₄(F_1-yO_y) are considered as electrochemical active compounds, and composites with carbon based on the same compositions AV_1-xM_xPO₄(F_1-yO_y)/C are considered as a component of the electrode mixture, where A=Li, Na, K or a mixture thereof, M is one of the following metals: Ti, Cr, Mn, Fe, Al, Sc, Zn or a mixture thereof, with 0≤X≤10≤y≤1. To obtain these compounds, a two-stage chemical technology is used. The first step involves preparing the precursor by treating the reaction mixture under hydrothermal or solvothermal conditions. At the second stage, a chemical reaction is carried out between the resulting precursor and a lithium, sodium or potassium salt at elevated temperatures.

EFFECT: increasing the manufacturability of the process, reducing the load on the environment and treatment facilities, as well as the ability to effectively control the morphology of particles and the fluorine-oxygen ratio during the synthesis process.

8 cl, 6 dwg, 20 ex