▎ 摘　　要

NOVELTY - A silicon-based graphene oxide composite material preparing method involves taking a pole piece of silicon-based graphene composite as a working electrode and the pole piece of a lithium source-containing material as a counter electrode, followed by assembling a button battery together with silicon containing propylene carbonate and lithium salt-containing electrolyte and a diaphragm. The battery is charged and discharged to co-embed lithium ions and carbonate propylene ester into graphite layers under the action of electric field to peel off graphite layers. USE - Method for preparing silicon-based graphene oxide composite material. ADVANTAGE - The method enables preparing silicon-based graphene oxide composite material with better economic benefits in a simple, inexpensive, safe and eco-friendly manner. DETAILED DESCRIPTION - A silicon-based graphene oxide composite material preparing method involves taking a pole piece of the silicon-based graphene composite as a working electrode and the pole piece of a lithium source-containing material as a counter electrode, followed by assembling a button battery together with silicon containing propylene carbonate and lithium salt-containing electrolyte and a diaphragm. The battery is charged and discharged to co-embed lithium ions and carbonate propylene ester into graphite layers under the action of electric field to peel off graphite layers to obtain the lithium/graphite oxide composite material precursor. The precursor is soaked into dimethyl carbonate solution and dried under vacuum. The dried precursor is rinsed in diluted hydrochloric acid ultrasonically to remove lithium. The resultant precursor is filtered and dried under vacuum to obtain lithium silicon/graphene oxide composite material precursor, which is coated on silicon substrate. The coated substrate is sintered burning under inert gas atmosphere at 700-1000 degrees C to obtain a finished product.