Silicon nanofibres

New method of producing silicon nanofibres by the electrolysis of chloride-fluoride molten salts was developed. Fibrous electrolytic silicon deposits with different thread diameter (100nm and less) and with average size of silicon crystals up to 20 nm were obtained.

 The proposed electrolytic method has the following advantages:

  • The self cost of the silicon nanofibres production decreases, due to lowering  power capacity process, in 1,5-2 times comparing to conventional methods;
  • The possibility to control the properties of produced silicon fibres in order to achieve the desired structure of their surface.

 Research implementation:

  • Due to their unique geometry the semi-conductive nanofibres of silicon are used in nanoelectronics, biosensorics, and technologies related to sun batteries production;
  • The silicon nanofibres are utilized for manufacturing anodes in the lithium chemical power sources. They can resist multiple recycling of lithium due to swelling and shrinking in 4 times without being destroyed (despite of silicon macro samples);
  • Capacity of lithium chemical power sources with the nanofibres silicon anodes increases in 2-3 times in comparison with currently used lithium chemical power sources with graphite anodes.