▎ 摘　　要

NOVELTY - Producing three-dimensional graphene, comprises subjecting graphene-containing material to selective physicochemical reaction for removing non-graphene component, where the three-dimensional graphene structure has graphene component accounting to 20-80 vol.%, and has through-holes with a porosity of at least 10%. USE - The three-dimensional graphene is useful in composite electrode material used in electrochemical energy storage device, preferably ion battery, namely lithium ion battery, a sodium ion battery, a magnesium ion battery and an aluminum ion battery and an ion capacitor, namely lithium ion capacity, a sodium ion capacity, a potassium ion capacity, a magnesium ion capacity and an aluminum ion capacitance, and an electrochemical capacitor, and the ion battery (all claimed). ADVANTAGE - The method has high production efficiency, saves energy, continuous and low cost large-scale industrialized production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing composite electrode material, comprising (a) preparing an electrode base material having through-holes, (b) introducing the precursor of the dopant into the through-hole of the electrode base material and preserving dopant in the form of elemental substance, alloy or compound to form a dopant-containing material, and (c) doping dopant-containing material in the step (b) so that the dopant is enclosed within the through-hole of the material and to avoid contact of the dopant with the ambient gas or liquid, to obtain composite electrode material, preferably cathode; (2) preparing composite electrode material-containing silicon, comprising (d) preparing electrode substrate material with a through hole, (e) passing silicon-containing gas or silicon-containing liquid into the electrode base material in the through hole, and passing silicon in the form of elemental silicon into reserved hole, to obtain a silicon-containing material, (f) sealing step (ii) silicon-containing material with silicon, so that elemental silicon is closed so as to avoid the elemental silicon contacting with the outside gas or liquid in the silicon-containing material, to obtain electrode material, preferably cathode; (3) composite electrode material, prepared as mentioned above; (4) use of composite electrode material in an electrochemical energy storage device, where the electrochemical energy storage device includes an ion battery, an ion capacitor, and an electrochemical capacitor, and the ion battery includes a lithium ion battery, a sodium ion battery, a magnesium ion battery and an aluminum ion battery, and ionic capacitance includes a lithium ion capacity, a sodium ion capacity, a potassium ion capacity, a magnesium ion capacity and an aluminum ion capacitance; and (5) device for producing the three-dimensional graphene, comprising a reactor for carrying out a gasification reaction, an intake system for feeding the feed gas into the reactor, a feed system for feeding the solid feedstock to the reactor, and a product collection system for directing a gasification reaction to produce a gas out of the reactor and condensing for collection, where the reactor is provided with a temperature control device and middle portion of the reactor is a main reaction zone for filling a solid raw material, and a distributor arranged at the lower part of the reactor, where the bottom of the reactor is provided with a raw material gas inlet and a solid slag discharging port, and a solid feed port top portion provided with a product gas outlet, and the product gas outlet is provided with a filter, air intake system includes a gas source for storing a gaseous feedstock which is connected to the feed gas inlet of the reactor bottom through a conduit, and feeding system is a multi-level lock bucket feeding system, and the multi-stage lock bucket is arranged in series, a valve is arranged on the pipeline between the adjacent lock hoppers, the solid material storage tank is connected with the inlet of the first-stage lock bucket through the pipeline, the outlet of the last-stage lock bucket is connected to the solid feed port of the reactor through a pipeline and the pipeline being provided with a valve, a product collection system includes a condenser, where upstream end of the condenser is connected to the product gas outlet at the top of the reactor, a condensing liquid collecting device and an exhaust gas treating device are sequentially connected in series with the downstream end of the condenser, the reactor is a gaseous bed reactor, a fluidized bed reactor, a spouted bed reactor, a fixed bed reactor or a moving bed reactor, and the cross-section of the sparger is tapered or inverted trapezoidal, the air intake system includes many air sources arranged in parallel, and a gas dryer is provided in the line between the gas source and the raw material gas inlet in the bottom of the reactor, and exhaust gas treatment device of the product collection system is a separation, adsorption or neutralization unit arranged in series, and liner and distributor of the reactor are made of a corrosion-resistant material, preferably quartz, graphite, ceramic or stainless steel. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the device utilized in the above mentioned method.