▎ 摘　　要

NOVELTY - Graphene oxide and precursor(s) are sprayed in the form of suspension or solution, into a reaction chamber (210,220), and the reaction chamber is heated to produce in situ reaction between graphene oxide and precursor (s) (230), and graphene oxide-based composite is retrieved from the reaction chamber (240). Thus, spray pyrolysis method (200) is carried out. USE - Spray pyrolysis method is used for graphene oxide-based composite by spray pyrolysis system (all claimed). Uses include but are not limited to electrical double layer capacitor, pseudocapacitor, energy storage device and lithium-ion battery for portable electronic device, electric vehicle and hybrid electric vehicle. ADVANTAGE - The method enables spray pyrolysis with high productivity of graphene oxide-based composite. The graphene oxide-based composite obtained using the spray pyrolysis method has excellent homogeneity, and high specific surface area. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) spray pyrolysis system, which comprises a nozzle(s) for spraying graphene oxide and precursor(s) into reaction chamber, heater(s) to heat at least portion of the reaction chamber, and extraction system. The graphene oxide and precursor(s) are sprayed into the reaction chamber by a nozzle, and the reaction chamber is at least partially heated using the heater(s) to produce in situ reaction between graphene oxide and precursor(s), and graphene oxide-based composite is retrieved from the reaction chamber using the extraction system; and (2) graphene oxide-based composite. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart explaining the spray pyrolysis method. Spray pyrolysis method (200) Step of spraying graphene oxide in suspension or solution (210) Step of spraying precursor in suspension or solution (220) Step of heating reacting chamber to produce in situ chemical reaction (230) Step of retrieving graphene oxide-based from reaction chamber (240)