▎ 摘　　要

NOVELTY - Preparing silicon-carbon composite particles involves providing a carbon scaffold comprising a pore volume, where the pore volume comprises ≥ 70% microporosity, heating the porous carbon scaffold to a temperature from 300-500℃, contacting the carbon scaffold with a silane feedstock gas, the mole silicon in the silicon-carbon composite is determined from the silicon content in the silicon-carbon composite by thermogravimetric analysis. USE - Method for preparing silicon-carbon composite particles. ADVANTAGE - The method improves rate capability of material by allowing lithium ions to intercalate isotropically as opposed to graphite where lithiation only proceed in parallel to the stacked graphene plane and reduces surface side reactions. DETAILED DESCRIPTION - Preparing silicon-carbon composite particles involves providing a carbon scaffold comprising a pore volume, where the pore volume comprises ≥ 70% microporosity, heating the porous carbon scaffold to a temperature from 300-500℃, contacting the carbon scaffold with a silane feedstock gas, where the XSi of the process is greater than 50%, where the XSi is 100×(mole of silicon in the silicon-carbon composite)/(mole silane feedstock gas), the mole silicon in the silicon-carbon composite is determined from the silicon content in the silicon-carbon composite by thermogravimetric analysis.