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Issue 12, 2013
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Synthesis and capacitive performance of two-dimensional sandwich-like graphene/nitrogen-doped carbon nanoparticle composites with tunable textural parameters and nitrogen content

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Abstract

Two-dimensional sandwich-like graphene/nitrogen-doped carbon nanoparticle (G/N-doped C) composites with tunable textural parameters such as the specific surface area and the specific pore volume, and nitrogen content have been successfully prepared using graphene/porous SiO2 composites as a template, and ethylenediamine (EDA) and carbon tetrachloride (CTC) with different weight ratios as nitrogen-containing carbon precursors using a simple nanocasting technology. The capacitive performance of the obtained materials has been tested in 1 M H2SO4 aqueous electrolyte. The optimum EDA to CTC weight ratio required for excellent capacitive performance is around 0.4. The G/N-doped C composites prepared with the EDA to CTC weight ratio of 0.4 exhibit a high capacitance of up to 189 F g−1 at a current density of 0.1 A g−1, attributed to the co-contribution of double layer capacitance and pseudocapacitance. They also show excellent rate capability (104 F g−1 remained at 15 A g−1) and cycle durability (nearly no capacity decay over 5000 cycles), making them promising electrode materials for supercapacitors.

Graphical abstract: Synthesis and capacitive performance of two-dimensional sandwich-like graphene/nitrogen-doped carbon nanoparticle composites with tunable textural parameters and nitrogen content

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Publication details

The article was received on 11 Jul 2013, accepted on 23 Sep 2013 and first published on 24 Sep 2013


Article type: Paper
DOI: 10.1039/C3NJ00764B
Citation: New J. Chem., 2013,37, 4148-4155
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    Synthesis and capacitive performance of two-dimensional sandwich-like graphene/nitrogen-doped carbon nanoparticle composites with tunable textural parameters and nitrogen content

    M. Zhou, F. Pu, H. Chen, Z. Wang, H. Zhang and S. Guan, New J. Chem., 2013, 37, 4148
    DOI: 10.1039/C3NJ00764B

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