Scalable fabrication of ultrathin free-standing graphene nanomesh films for flexible ultrafast electrochemical capacitors with AC line-filtering performance

An ultrathin free-standing graphene nanomesh film (GMF) with uniform and dense nanoholes was fabricated via an in-situ carbothermal reduction strategy on the basis of spontaneously assembled graphene hybrid film. Benefiting from unique nanomesh structure, the GMF-based electrochemical capacitors exhibit large specific capacitances and excellent AC line-filtering performance.274