Synthesis of composite Si@C nanopowders in a cyclic compression reactor for anodes of lithium-ion batteries

Pyrolysis of a mixture of monosilane with light hydrocarbons in an argon atmosphere in a cyclic compression reactor was used to synthesize nanoparticles with a crystalline silicon core and a carbon shell. The resulting powders were tested as an anode material for lithium-ion batteries. It is shown that the maximum reversible electrochemical capacity is 603 and 242 mA $\cdot$ h/g at current densities of 0.05 and 2 A/g, respectively.