METHOD OF LITHIUM-ION BATTERIES ANODE CONTACT SURFACE FORMING Russian patent published in 2020 - IPC H01M4/139 H01M10/525 B82B3/00 

FIELD: chemistry; electrical engineering.

SUBSTANCE: invention relates to chemistry, electrical engineering and nanotechnology and can be used for development of active materials of anodes of lithium-ion batteries. According to the invention, the anode contact surface forming method involves: preparation of powder mixture of composition: nanocomposite based on multi-wall carbon pipes - Sn, SnO₂, in amount of 80÷90 wt. % of carbon black syper-P soot in amount of 10÷5 wt. % binder polyvinylidene fluoride in amount of 10÷5 wt. %, adding a solvent of N-methyl-2-pyrrolidone, after which the obtained mixture is deposited on the surface of the anode which has been previously cleaned from the oxide layer, followed by annealing at pressure of 10÷45 Pa, at temperature T = 80÷90 °C for 8÷12 hours.

EFFECT: technical result is reduction of degradation of discharge capacity.

1 cl, 2 tbl, 4 ex