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. 2018 Dec 5;3(12):16658-16671.
doi: 10.1021/acsomega.8b02160. eCollection 2018 Dec 31.

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

Govindarasu Gunasekaran Karthikeyan  1 , Ganesan Boopathi  2 , Arumugam Pandurangan  1
Affiliations

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

Govindarasu Gunasekaran Karthikeyan et al. ACS Omega. .

Abstract

Mesoporous carbon spheres (MCS-750, MCS-800, MCS-850, MCS-900, and MCS-950) have been synthesized by a facile strategy with low temperature and rapid chemical vapor deposition technique. The synthesized MCS possess relatively large surface area (570-670 m2 g-1), good graphitization, remarkable porosity, and redox functionalities on the surface of the synthesized MCS. Combination of these structural and surface properties of the synthesized MCS as an electrode material (MCS-850) showed an excellent charge-storage capacity with a specific capacitance of 338 F/g at 1 mV/s, 217 F/g at 0.5 A/g. MCS-850 shows long-term cycling stability with capacitive retention of more than 96% after 2000 cycles in 6 M KOH electrolyte. In addition, a fabricated two-electrode symmetric cell obtained 86% retention after 2000 cycles. The two-electrode symmetric device exhibited a specific capacitance of 63 F/g at 5 mV/s with an energy density of 7.1 Wh/kg.

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Conflict of interest statement

The authors declare no competing financial interest.

Figures

Figure 1
Figure 1
Small-angle XRD (a) and N2 adsorption–desorption (b) of Fe-KIT-6. The inset in (b) shows pore-size distribution.
Figure 2
Figure 2
SEM images (a, b) and HRTEM images (c, d) with different magnifications of Fe-KIT-6.
Figure 3
Figure 3
XRD patterns (a) and Raman spectrum (b) of MCS synthesized at 750, 800, and 850 °C.
Figure 4
Figure 4
SEM images of (a) MCS-750, (b) MCS-800, and (c) MCS-850.
Figure 5
Figure 5
HRTEM images of (a1–a3) MCS-750, (b1–b3) MCS-800, and (c1–c3) MCS-850.
Figure 6
Figure 6
Probable formation mechanism of MCSs.
Figure 7
Figure 7
N2 adsorption–desorption isotherm (a) and pore-,size distribution curves (b) of obtained MCS prepared at different temperatures of 750, 800, and 850 °C.
Figure 8
Figure 8
XPS images of MCS-750, MCS-800, and MCS-850 samples (a) and curve fit of the C 1s peaks of MCS-750, MCS-800, and MCS-850 (b).
Figure 9
Figure 9
CV curves of MCS-750, MCS-800, and MCS-850 at a scan rate of 50 mV/s (a); GCD curves of MCS-750, MCS-800, and MCS-850 at 1 A/g (b); CV curves of MCS-850 at various scan rates (c); and GCD curves of MCS-750, MCS-800, and MCS-850 at various current densities (d).
Figure 10
Figure 10
EDX spectra of MCS-750 (a), MCS-800 (b), MCS-850 (c), MCS-900 (d), and MCS-950 (e).
Figure 11
Figure 11
EIS (a), current density vs specific capacitance (b), and scan rates vs specific capacitance (c) of MCS-750, MCS-800, and MCS-850 and cycling test of MCS-850 (d).
Figure 12
Figure 12
CV curves of symmetric cell at different scan rates (a) and GCD curves at various current densities (b), specific capacitance vs scan rate of symmetric cell (c), and cyclic stability test at 1 A/g (d).
Figure 13
Figure 13
Ragone plot of two-electrode symmetric cell.
See this image and copyright information in PMC

References

    1. Liu Z.; Fang Y.; Jia H.; Wang C.; Song Q.; Li L.; Lin J.; Huang Y.; Yu C.; Tang C. Novel Multifunctional Cheese-Like 3D Carbon-BN as a Highly Efficient Adsorbent for Water Purification. Sci. Rep. 2018, 8, 110410.1038/s41598-018-19541-5. - DOI - PMC - PubMed
    1. Ariga K.; Vinu A.; Miyahara M.; Hill J. P.; Mori T. One-Pot Separation of Tea Components through Selective Adsorption on Pore-Engineered Nanocarbon, Carbon Nanocage. J. Am. Chem. Soc. 2007, 129, 11022–11023. 10.1021/ja074870t. - DOI - PubMed
    1. Taboada C. D.; Batista J.; Pintar A.; Levec J. Preparation, Characterization and Catalytic Properties of Carbon Nanofiber-Supported Pt, Pd, Ru Monometallic Particles in Aqueous-Phase Reactions. Appl. Catal., B 2009, 89, 375–382. 10.1016/j.apcatb.2008.12.016. - DOI
    1. Deshmukh A. B.; Nalawade A. C.; Karbhal I.; Qureshi M. S.; Shelke M. V. Electrochemical Capacitive Energy Storage in Polyhipe Derived Nitrogen Enriched Hierarchical Porous Carbon Nanosheets. Carbon 2018, 128, 287–295. 10.1016/j.carbon.2017.11.080. - DOI
    1. Xiao J.; Zhao C.; Hu C.; Xi J.; Wang S. Pudding-Typed Cobalt Sulfides/Nitrogen and Sulfur Dual-Doped Hollow Carbon Spheres as a Highly Efficient and Stable Oxygen Reduction Electrocatalyst. J. Power Sources 2017, 348, 183–192. 10.1016/j.jpowsour.2017.03.011. - DOI

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