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Dai, Liming
Dr. Liming Dai's Group
Research Interests
  • Synthesis

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Formation of Large-Area Nitrogen-Doped Graphene Film Prepared from Simple Solution Casting of Edge-Selectively Functionalized Graphite and Its Electrocatalytic Activity

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Title
Formation of Large-Area Nitrogen-Doped Graphene Film Prepared from Simple Solution Casting of Edge-Selectively Functionalized Graphite and Its Electrocatalytic Activity
Author
Jeon, In-YupYu, DingshanBae, Seo-YoonChoi, Hyun-JungChang, Dong WookDai, LimingBaek, Jong-Beom
Keywords
graphite; graphene; edge-functionalization; nitrogen-doped graphene; electrocatalytic activity
Issue Date
201109
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.23, no.17, pp.3987 - 3992
Abstract
"Pristine" graphite is edge-selectively functionalized with 4-aminobenzoic acid by a "direct" Friedel Crafts acylation reaction in a polyphosphoric acid/phosphorus pentoxide medium to produce 4-aminobenzoyl edge-functionalized graphite (EFG). The EFG is readily dispersible in N-methyl-2-pyrrolidone (NMP). Subsequent solution casting leads to the formation of large-area graphene film on a silicon wafer. The film shows sheet resistances of 60 and 200 Omega/sq, respectively, before and after heat treatment at 900 degrees C in an argon atmosphere. Upon the heat treatment, the EFG film becomes a N-doped graphene (N-graphene) film to display outstanding electrocatalytic activity for oxygen reduction reaction (ORR).
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DOI
http://dx.doi.org/10.1021/cm201542m
ISSN
0897-4756
Appears in Collections:
ECHE_Journal Papers
MNE_Journal Papers

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