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Synthesis and Functionalization of Nitrogen-doped Carbon Nanotube Cups with Gold Nanoparticles as Cork Stoppers
Published on: May 13, 2013
Preparation of nitrogen-doped carbon using graphene Quantum dots-chitosan as the precursor and its supercapacitive
Wensheng Tan1, Renjun Fu2, Hong Ji3
1Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China; Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing, Changzhou College of Information Technology, Changzhou 213164, China.
Abstract:
Nitrogen-doped carbon (N-C) is pyrolytically prepared by using the nanocomposites of graphene Quantum dots (GQDs) and chitosan (CS) as the precursor. Due to the existence of GQDs nanofiller, the three-dimensional (3D) interconnected frameworks of CS are well preserved after the pyrolysis treatment; meanwhile, CS in the nanocomposites functions as nitrogen source for the N-C. The obtained N-C exhibits a considerable specific capacitance (545Fg-1 at 1Ag-1), high rate capability and excellent cyclic stability (88.9% capacitance retention after 5000cycles at 10Ag-1) when it is used as the electrode materials in supercapacitors. The well-preserved 3D frameworks and N-doping are believed to be responsible for the excellent supercapacitive behaviors of the N-C.
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