▎ 摘　　要

NOVELTY - Preparation of a silicon-carbon composite material involves (a) introducing flakes of a carbon-based material and optionally a catalyst into a chamber of a reactor, (b) introducing a precursor of nanostructured silicon into the chamber, (c) decreasing the dioxygen content in the chamber, (d) applying a thermal treatment at 200-900° C, (e) recovering a first silicon-carbon composite material and (f) applying a spheroidization to the product obtained in step (e) to obtain a second silicon-carbon composite material. USE - Preparation of silicon-carbon composite material used as electrode active material for manufacturing electrodes e.g. anode for energy storage device e.g. lithium secondary batteries (all claimed) for electric vehicles and advanced electric applications. ADVANTAGE - The method for preparation of silicon-carbon composite material is easy to scale-up, environmentally-friendly, and low cost. The second silicon-carbon composite material has good particle morphology, controlled internal porosity and low surface area, silicon is homogeneously dispersed in the silicon-carbon composite material, after chemical vapor deposition (CVD), the nanostructured silicon is attached to the surface of the carbon-based material which allows improved processability of the first silicon-carbon-based material. The second silicon-carbon composite material has much higher columbic efficiencies (CE) and consequently improves cyclability. Silicon-carbon composite material as anode has high electrical conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a manufacture of an electrode including a current collector, which involves (i) preparing the carbon-silicon composite material as electrode active material and (ii) covering at least one surface of the current collector with a composition comprising the electrode active material; and manufacture of an energy storage device e.g. lithium secondary battery comprising a cathode, an anode, and a separator arranged between the cathode and the anode. At least one of the electrodes, preferably the anode is obtained by the above method.