At　present,　the　chemical　redox　method　is　still　one　of　the　main　methods　for　preparing　graphene　powder　in　the　industry.　However,　this　method　is　expensive,　complicated,　dangerous,　and　badly　polluted　in　environment.　In　recent　years,　with　the　continuous　development　of　electrical　power　sources　and　materials,　the　novel　plasma　technology　has　shown　its　unique　advantages　in　the　production　of　graphene　and　hydrogen　by　the　pyrolysis　of　methane,　wherein,　much　electrical　energy　can　be　transformed　into　chemical　energy.　The　special　layered　and　stacked　structure　of　graphene　nanosheets　makes　it　one　of　the　good　choices　for　electrically　conductive　material　for　LIB.　Therefore,　the　development　of　a　plasma-based　graphene　has　a　positive　effect　for　the　production　of　graphene　(and　also　hydrogen)　on　an　industrial　scale.　In　this　work,　graphene　nanosheets　were　successfully　fabricated　by　one-step　method　in　Ar-H2-CH4　and　Ar-CO2-CH4　by　AC　gliding　arc　discharge,　and　the　formation　conditions　of　plasmonic　graphene　were　further　understood　by　thermodynamic　calculations.　Finally,　plasma-processed　graphene　as　a　conductive　assistant　constructs　an　effective　conductive　network,　which　improves　the　specific　capacity　of　the　LiFePO4/acetylene　black　electrode　with　good　cycling　performance　and　electrical　conductivity.　©　2022　IEEE.