▎ 摘　　要

NOVELTY - Producing complex material of graphene and carbon nanofibers from carbon dioxide comprises adding and reacting carbon dioxide in the presence of a magnesium-based carbon dioxide reducing agent and a transition metal-based catalyst. USE - The complex material is useful in lithium ion battery anode material and cathode material, interlayer of a lithium sulfur battery (all claimed). ADVANTAGE - The method: reduces energy consumption and cost; improves electrochemical activity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for complex material of graphene and carbon nanofibers comprising carbon nanofibers coexisting on the surface of graphene sheets or between each sheet, and charging/discharging capacity of 200-2000 mAh/g based on the voltage of 0.1-3.0 V and the current density of 0.05-20 A/g. DESCRIPTION OF DRAWING(S) - The drawing shows flow diagram of the producing complex material of graphene and carbon nanofibers from carbon dioxide (Drawing includes non-English language text).