Preparation of N doped three dimensional graphene and its electrochemical performance

doi:10.3969/j.issn.1000-1565.2017.05.007

Abstract

Abstract: To explore more environmental friendly method of preparing three dimension reduced graphene oxide, herein, using L-Asparagine as nitrogen source and vitamin C as green reductant, we proposed a simple one step hydrothermal method. After reaction at 90 ℃ for 1,2,3,5,10 h and then freeze-drying, the three dimensional N doped graphene aerogel is prepared. And the test, conducted under three electrode system indicates that the material with 3 h reaction time shows better electrochemical performance, smaller internal resistance. The specific capacitance is 173.8 F/g at current density of 1 A/g. And after 1 000 times charge and discharge cycles, the specific capacitance remain at a rate of 83%. In addition,it has lower internal resistance(0.6 Ω). In summary, the material has excellent power performance and capacitance behavior.

Key words: one step hydrothermal method, green reductant, three dimensional N doped graphene, specific capacitance

CLC Number:

O646.5

WANG Yansu, ZHAN Yali, YAN Xiyang. Preparation of N doped three dimensional graphene and its electrochemical performance[J]. Journal of Hebei University (Natural Science Edition), 2017, 37(5): 483-488.

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