Preparation method of through-hole graphene foam

The invention relates to a preparation method of through-hole graphene foam, belonging to the technical field of porous material processing. The preparation method comprises the following steps: depositing a graphene saturated solution on a metal foam framework sintered with a copper substrate by a boiling deposition process, removing the metal foam framework to obtain hollow fiber graphene foam used as a template, depositing the graphene saturated solution into the template by the boiling deposition process, removing the template, and drying to obtain the through-hole graphene foam. The method lowers the production cost of the through-hole graphene foam, reduces the injury to the human body, and promotes the popularization and application of the graphene foam.