METHOD TO MAKE FIBRES OF SILICON OR SILICON-BASED MATERIAL, AND THEIR APPLICATION IN RECHARGEABLE LITHIUM ACCUMULATORS Russian patent published in 2012 - IPC H01M4/38 C30B29/06 

FIELD: electricity.

SUBSTANCE: in the proposed method fibres are produced by etching columns with length from 20 to 300 mcm and diameter in the range of 0.08-0.5 mcm on a silicon substrate, with their subsequent separation from the substrate. An electrode for a lithium-ion accumulator in the proposed method is manufactured in the form of a composite film, which is produced by mixing fibres of silicon or a silicon-based material with a binder and/or an electron-conducting additive and application of a suspension. Also an electrochemical cell is proposed, as well as an anode, an accumulator and a device supplied with energy of the lithium accumulator with an electrode on the basis of silicon fibres produced in compliance with the proposed method.

EFFECT: higher stability of capacitance during the required number of charging and discharging cycles in rechargeable lithium accumulators, and increasing strength of structure with every charging and discharging cycle.

42 cl, 3 dwg