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Issue 31, 2018, Issue in Progress
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Excellent supercapacitance performance of 3-D mesoporous carbon with large pores from FDU-12 prepared using a microwave method

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Abstract

Highly ordered and three-dimensional (3-D) mesoporous carbon materials were prepared through a nano-hard templating approach using FDU-12 silica with tunable pore sizes as a template, which was synthesized via a microwave-assisted method. Powder XRD and microscopic techniques such as HR-TEM, HR-SEM, and N2 adsorption–desorption techniques were employed to characterize the structure and textural properties of the prepared mesoporous carbon samples. The characterization results reveal that all the mesoporous carbon samples show a 3-D porous mesostructure with tunable pore diameters (5.7 to 9.4 nm) and a large specific surface area in the range from 451 to 1251 m2 g−1. The supercapacitive behavior of the cubic structured mesoporous carbons was determined using cyclic voltammetry, electrochemical impedance and charge–discharge measurements. The cubic mesoporous carbon materials exhibit a superior capacitive performance with a high specific capacitance value of 315.3 F g−1 at the current density of 1 A g−1, which is much higher than that of hexagonally-ordered mesoporous carbon with large pore diameters, activated carbon, and carbon nanotubes. The materials also show excellent cyclic stability and extremely low resistance. The superior specific capacitance of these materials is attributed to the combination of excellent surface properties such as large specific surface area, large pore volume and uniform pore diameter, spherical morphology, and a 3-D porous system with cage-type pores.

Graphical abstract: Excellent supercapacitance performance of 3-D mesoporous carbon with large pores from FDU-12 prepared using a microwave method

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Publication details

The article was received on 09 Feb 2018, accepted on 24 Apr 2018 and first published on 09 May 2018


Article type: Paper
DOI: 10.1039/C8RA01281D
Citation: RSC Adv., 2018,8, 17017-17024
  • Open access: Creative Commons BY license
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    Excellent supercapacitance performance of 3-D mesoporous carbon with large pores from FDU-12 prepared using a microwave method

    W. S. Cha, S. N. Talapaneni, Devaraju M. Kempaiah, S. Joseph, K. S. Lakhi, A. M. Al-Enizi, D. Park and A. Vinu, RSC Adv., 2018, 8, 17017
    DOI: 10.1039/C8RA01281D

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