Synthesis of Graphite Shell on Silicon Nanoparticles

摘要

Discussed herein are methods of making an anode material comprising silicon nanoparticles and a graphite carbon coating thereon. The method includes providing silicon nanoparticles, applying an amorphous carbon coating thereon to produce an amorphous carbon shell on the silicon nanoparticles at a first temperature, and converting the amorphous carbon shell to a graphite carbon shell at a second temperature higher than the first temperature. may include conversion. The method comprises providing an argon-silane mixture, exposing the argon-silane mixture to a non-thermal plasma to convert the silane mixture to amorphous clusters, passing the amorphous clusters through a furnace at a first temperature to agglomerate them into silicon nanoparticles. It may optionally include preparing nanoparticles.