Characterization of Carbon Nanofiber Electrode with different Ketjenblack Conducting Material Mixing Amount Using EDLC

Ketjenblack 전도제 혼합량에 따른 EDLC용 탄소나노섬유 전극의 특성

  • Published : 2008.04.29

Abstract

Carbon nanofibers with nano-sized structures were evaluated as a active material using supercacitor electrode which could store electrochemical energy reversibly. A feasibility of EDLC electrode was estimated with specific surface area measurement by BET method and mesopore structure of carbon nanofiber surface could be explained electrochemical absorption-desorption in aqueous electrolyte. A capacitance of carbon nanofiber electrode was increased gradually, depending on the ratio of Ketjenblack as a conducting material. Ketjen Black $20{\sim}25\;wt.%$ ratio in electrode was observed a suitable amount of conducting material by cyclic voltametry results.

Keywords

References

  1. D. A. Scherson and A. Palencsar, "Batteries and Electrochemical Capacitors", nInterface, spring, 2006 pp17-22
  2. E. Frackowiaka, F. Beguin, "Carbon materials for the electrochemical storage of energy in capacitors", Cabon, Vol. 39, 2001, pp. 937-950 https://doi.org/10.1016/S0008-6223(00)00183-4
  3. 김종휘, "전기화학 커패시터", Journal of the Korean Electrochemical Society, Vol. 10. No. 1, 2007, pp. 36-42 https://doi.org/10.5229/JKES.2007.10.1.036
  4. M. Winter, R. J. Brodd, "What Are Batteries, Fuel Cells, and Supercapacitors?", Chem. Rev.,Vol. 104, 2004, pp. 4245-4269 https://doi.org/10.1021/cr020730k
  5. S.-H. Yoon, S. Lim, Y, Song, Y. Ota, W. Qiao, A. Tanaka, I. Mochida, "KOH activation of carbon nanofibers", Carbon, Vol. 42, 2004, pp. 1723-1729 https://doi.org/10.1016/j.carbon.2004.03.006
  6. J. H. Park, O. O. Park, K. H. Shin, C. S. Jin and J. H. Kim, "An Electrochemical Capacitor Based on a $Ni(OH)_2$/Activated Carbon Composite Electrode", Journal of The Electrochemical and 고체-State letters, Vol. 5, No. 2, 2002, pp. H7-H10 https://doi.org/10.1149/1.1432245
  7. H. Nakagawa, A. Shudo and K. Miura, "High-Capacity Electic Double-Layer Capacitor with High-Density-Activated Carbon Fiber Electrodes", Journal of The Electrochemical Society, Vol. 147, No. 1, 2000, pp. 38-42 https://doi.org/10.1149/1.1393154
  8. C Kim, J. -S. Kim, S.-J. Kim, W.-J. Lee and K.-S. Yanga, "Supercapacitors Prepared from Carbon Nanofibers Electrospun from Polybenzimidazol", Journal of The Electrochemical Society, Vol. 151, No. 5, 2004, pp. A769-A773 https://doi.org/10.1149/1.1695380
  9. C. Kim, K. S. Yang : "Electrochemical Properties of Carbon Nanofiber Web as an Electrode for Supercapacitor Prepared by Electrospinning", Applied Physics letters, Vol. 83, No. 6, 2003, pp 1216-1218 https://doi.org/10.1063/1.1599963
  10. S. -U. Kim, K -H. Lee : "Carbon Nanofiber Composites for the Electrodes of Electrochemical Capacitors", Chemical Physics letters, Vol. 400, No. 1-3, 2004, pp. 253-257 https://doi.org/10.1016/j.cplett.2004.10.124
  11. 최원경, 조태환, "PVDF 접합체 농도 변화와 탄소나노섬유 전극의 전기화학적 특성", 한국수소 및 신에너지학회 논문집, Vol. 18, No. 4, 2007, pp. 446-451
  12. C. Kim, S.-H. Park, W.-J. Lee, K.-S. Yang, "Characteristics of supercapaitor electrodes of PBI-based carbon nanofiber web prepared by elecrospinning", Electrochimica Acta, Vol. 50, 2004, pp. 877-881 https://doi.org/10.1016/j.electacta.2004.02.071
  13. M. A. Murphy, G. D. Wilcox, R. Dahm, F. Marken, "Adsorption and redox processes at carbon nanofiber electroes grown onto a ceramic fiber backbone", Electrochemistry Communications, Vol. 5, 2003, pp. 51-55 https://doi.org/10.1016/S1388-2481(02)00533-7
  14. S. Lee, T.-R. Kimb, A. Ogale, M.-S. Kim, "Surface and structure rnodification of carbon nanofibers", Synthetic Metals, Vol. 157, 2007, pp. 644-650 https://doi.org/10.1016/j.synthmet.2007.07.005