▎ 摘　　要

NOVELTY - Producing nitrogen-doped multilayer graphene useful in energy, bio and environment, comprises (a) preparing graphene mixture by injecting synthesis accelerator into the eggshell; (b) calcining the graphene mixture to prepare calcined graphene; and (c) washing the fired graphene. USE - The multilayer graphene is useful in energy, bio and environment; and controlling pollutants in water. ADVANTAGE - The method provides upcycling technology for recycling eggshells classified as general waste; recycles eggshells classified as garbage; and produces nitrogen-doped multilayer graphene in easy and economical manner, and exhibiting two-dimensional band peak when measuring in Raman spectrum. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nitrogen-doped multilayer graphene performed by above method. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the method for producing nitrogen-doped multilayer graphene (Drawing includes non-English language text).