METHOD FOR PRODUCING NANOCOMPOSITION POWDER ANODE MATERIALS FOR LITHIUM-ION ACCUMULATORS Russian patent published in 2017 - IPC B22F1/00 H01M4/1391 B82Y30/00 H01M4/04 H01M4/48 

FIELD: chemistry.

SUBSTANCE: as a raw material, a nanosized powder of aerosil (SiO₂) with a specific surface of 350-380 m²/g is selected, which is dried in a vacuum for 1-3 hours. By the method of molecular layering, thin films of tin oxide (SnO₂) with the thickness of 10-20 nm are applied to the aerosil powder with producing a composition of SiO₂:SnO₂ 1:1. Then, the resulting thin films of tin oxide on the silicon oxide powder are diffusion-mixed at the temperature of 300 to 500°C for 8-15 hours.

EFFECT: material with a high specific surface area and high specific capacity is provided by a uniform distribution of the chemical composition by volume and a defect-free crystal structure.

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