Preparation of high density anode with reduced graphene oxide-silicon metal particle compound and fabrication of electrodes for secondary battery and process for preparing the same

摘要

The present invention relates to a method for manufacturing a high-density negative electrode material including a graphene oxide reduced product-silicon metal particle complex, and an electrode for a secondary battery including the negative electrode material prepared thereby, and a graphene oxide reduced product through a cation-pi interaction Graphene oxide reduced product manufacturing step of producing a; The composite using any one of a first process of coating a polymer on silicon metal particles and then complexing it with the graphene-reduced material and a second process of coating the polymer on the graphene oxide-reduced material and then complexing it with the silicon metal particles. A composite dispersion solution preparation step of preparing a dispersion solution; A composite powder manufacturing step of spray-drying the composite dispersion solution to prepare a composite powder having a core-shell structure; A slurry preparation step of preparing a negative electrode material slurry by mixing natural graphite and artificial graphite with the composite powder; And a negative electrode material manufacturing step of applying the slurry to a current collector. The electrode for a secondary battery including the negative electrode material manufactured thereby can improve high capacity and stable cycle performance.