Journal of Inorganic Materials ›› 2013, Vol. 28 ›› Issue (06): 677-682.DOI: 10.3724/SP.J.1077.2013.12746

• Research Letter • Previous Articles    

Facile Approach to Preparation of Nitrogen-doped Graphene and Its Supercapacitive Performance

FENG Ya-Qiang1,2, TANG Fu-Ling1, LANG Jun-Wei2, LIU Wen-Wen2, YAN Xing-Bin2   

  1. (1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Department of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2. Laboratory of Clean Energy Chemistry and Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China)
  • Received:2012-12-11 Revised:2013-01-14 Published:2013-06-20 Online:2013-05-20
  • About author:FENG Ya-Qiang (1987–), male, candidate of Master. E-mail: yaqiang.feng@gmail.com
  • Supported by:

    The Top Hundred Talents Program of the Chinese Academy of Sciences; National Natural Science Foundations of China (51005225, 21203223)

Abstract: Nitrogen-doped graphene nanosheets (N-GNSs) with good morphologies were successfully synthesized by a facile solvothermal method. The result of X-ray photoelectron spectroscope (XPS) revealed that most oxygen containing functional groups on the surface of graphene oxide (GO) were removed during solvothermal reduction, and nitrogen atoms from dimethylformamide (DMF) were effectively doped into graphene structure in the form of    pyrrolic-N and graphite-N. As an electro-active material, the N-GNSs exhibited superior capacitive behavior in 2 mol/L KOH electrolyte with a high specific capacitance of 181.3 F/g at the current density of 0.5 A/g. Also, it displayed good electrochemical stability with 92.5% of the initial capacitance over consecutive 2000 cycles. Therefore, the N-GNSs can be an attractive candidate as electrode materials for supercapacitors.

Key words: graphene, nitrogen-doped, solvothermal, supercapacitors

CLC Number: