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http://dx.doi.org/10.3740/MRSK.2014.24.1.37

Fabrication of Ru Nanoparticles Decorated Porous Carbon Nanofibers for Electrochemical Capacitors  

Lee, Yu-Jin (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
An, Geon-Hyoung (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Ahn, Hyo-Jin (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Publication Information
Korean Journal of Materials Research / v.24, no.1, 2014 , pp. 37-42 More about this Journal
Abstract
Well-distributed ruthenium (Ru) nanoparticles decorated on porous carbon nanofibers (CNFs) were synthesized using an electrospinning method and a reduction method for use in high-performance elctrochemical capacitors. The formation mechanisms including structural, morphological, and chemical bonding properties are demonstrated by means of field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). To investigate the optimum amount of the Ru nanoparticles decorated on the porous CNFs, we controlled three different weight ratios (0 wt%, 20 wt%, and 40 wt%) of the Ru nanoparticles on the porous CNFs. For the case of 20 wt% Ru nanoparticles decorated on the porous CNFs, TEM results indicate that the Ru nanoparticles with ~2-4 nm size are uniformly distributed on the porous CNFs. In addition, 40 wt% Ru nanoparticles decorated on the porous CNFs exhibit agglomerated Ru nanoparticles, which causes low performance of electrodes in electrochemical capacitors. Thus, proper distribution of 20 wt% Ru nanoparticles decorated on the porous CNFs presents superior specific capacitance (~280.5 F/g at 10 mV/s) as compared to the 40 wt% Ru nanoparticles decorated on the porous CNFs and the only porous CNFs. This enhancement can be attributed to the synergistic effects of well-distributed Ru nanoparticles and porous CNF supports having high surface area.
Keywords
electrochemical capacitors; porous carbon nanofibers; ruthenium(Ru) nanoparticles; electrospinning; reduction method;
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1 Y. Zhang, H. Feng, X. Wu, L. Wang, A. Zhang, T. Xia, H. Dong, X. Li and L. Zhang, Int. J. Hydrogen Energy, 34, 4889 (2009).   DOI   ScienceOn
2 R. Kotz and M. Carlen, Electrochim. Acta, 45, 2483 (2000).   DOI   ScienceOn
3 H-J Ahn and T-Y Seong, J. Alloys Comp., 478, L8 (2009).   DOI   ScienceOn
4 S. Mitani, S-I Lee, K. Saito, Y. Korai and I. Mochida, Electrochim. Acta, 51, 5487 (2006).   DOI   ScienceOn
5 H-J Ahn, J. I. Sohn, Y-S Kim, H-S Shim, W. B. Kim and T-Y Seong, Electrochem. Commun., 8, 513 (2006).   DOI   ScienceOn
6 D-Y Youn, L. Tuller, T-S Hyun, D-K Choi and I-D Kim, J. Electrochem. Soc., 158, A970 (2011).   DOI   ScienceOn
7 J. P. Zheng, P. J. Cygan and T. R. Jow, J. Electrochem. Soc., 142, 2699 (1995).   DOI   ScienceOn
8 G-H An and H-J Ahn, ECS Solid State Lett., 2, M33 (2013).
9 C-M Chuang, C-W Huang, H. Teng and J-M Ting, Compos. Sci. Technol., 72, 1524 (2012).   DOI   ScienceOn
10 P. Lv, P. Zhang, Y. Feng, Y. Li and W. Feng, Electrochim. Acta, 78, 515 (2012).   DOI
11 S. K. Nataraj, K. S. Yang and T. M. Aminabhavi, Prog. Polym. Sci., 37, 487 (2012).   DOI   ScienceOn
12 B-S Lee, S-B Son, K-M Park, G. Lee, K. H. Oh, S-H Lee and W-R Yu, ACS Appl. Mater. Interfaces, 4, 6702 (2012).   DOI   ScienceOn
13 H-J Ahn, W. J. Moon, T-Y Seong and D. Wang, Electrochem. Commun., 11, 635 (2009).   DOI   ScienceOn
14 J. Marwan, T. Addou and D. Belanger, Chem. Mater., 17, 2395 (2005).   DOI   ScienceOn
15 A. K. Shukla, A. Banerjee, M. K. Ravikumar and A. Jalajakshi, Electrochim. Acta, 84, 165 (2012).   DOI   ScienceOn
16 R. Vellacheri, V. K. Pillai and S. Kurungot, Nanoscale, 4, 890 (2012).   DOI   ScienceOn
17 P. Perret, Z. Khani, T. Brousse, D. Belanger and D. Guay, Electrochim. Acta, 56, 8122 (2011).   DOI   ScienceOn
18 A. Lewandowski, P. Jakobczyk and M. Galinski, Electrochim. Acta, 86, 225 (2012).   DOI   ScienceOn
19 C. Bock, C. Paquet, M. Couillard, G. A. Botton and B. R. Macdougall, J. Am. Chem. Soc., 126, 8028 (2004).   DOI   ScienceOn