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A method to obtain a Ragone plot for evaluation of carbon nanotube supercapacitor electrodes

Published online by Cambridge University Press:  31 January 2011

Jeffrey T. Glass
Affiliation:
Electrical and Computer Engineering Department, Duke University, Durham, North Carolina 27708
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Abstract

Electrochemical double layer capacitors, also referred to as supercapacitors, are a promising technology in the field of energy storage. Carbon nanotube (CNT)-based supercapacitors are particularly interesting because of CNTs' high surface area and conductivity. CNT supercapacitors can potentially be used in hybrid electric vehicles due to their higher power density. Comparing energy storage systems that store energy in different ways, such as batteries, fuel cells, supercapacitors, and flywheels, requires that an appropriate set of performance data be collected. A Ragone plot is a log-log plot of a device's energy density versus power density, giving insight into its operational range. A method to obtain Ragone plots for CNT-based supercapacitors in a three-terminal electrochemical cell was adapted from a technique to test commercial capacitors for electric vehicles. Ragone plots for different types of as-grown CNT electrodes in different electrolytes are presented, along with the procedural details of this new method to obtain electrode-specific energy and power densities. Additionally, a theoretical weight calculation for a carbon nanotube film was derived and validated with a direct weight measurement of a CNT film. This weight was used in the specific energy and power densities for the Ragone plot.

Type
Articles
Copyright
Copyright © Materials Research Society 2010

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References

REFERENCES

1.Baughman, R.H., Zakhidov, A.A., de Heer, W.A.Carbon nanotubes—The route toward applications. Science 297, (5582)787 (2002)CrossRefGoogle ScholarPubMed
2.Christen, T., Carlen, M.W.Theory of Ragone plots. J. Power Sources 91, 210 (2000)CrossRefGoogle Scholar
3.Dunn-Rankin, D., Martins Leal, E., Walther, D.C.Personal power systems. Prog. Energy Combust. Sci. 31, 422 (2005)CrossRefGoogle Scholar
4.Christen, T., Ohler, C.Optimizing energy storage devices using Ragone plots. J. Power Sources 110, 107 (2002)Google Scholar
5.Chmiola, J., Yushin, G., Gogotsi, Y., Portet, C., Simon, P., Taberna, P.L.Anomalous increase in carbon capacitance at pore sizes less than 1 nanometer. Science 313, (5794)1760 (2006)CrossRefGoogle Scholar
6.Miller, J.R., Burke, A.F.Electric Vehicle Capacitor Test Procedures Manual (Idaho National Engineering Laboratory, U.S. Department of Energy 1994)Google Scholar
7.Conway, B.E.Electrochemical Supercapacitors: Scientific Fundamentals and Technological Applications (Kluwer Academic/Plenum, New York 1999)698CrossRefGoogle Scholar
8.Cui, H., Zhou, O., Stoner, B.R.Deposition of aligned bamboo-like carbon nanotubes via microwave plasma enhanced chemical vapor deposition. J. Appl. Phys. 88, 6072 (2000)CrossRefGoogle Scholar
9.Plitz, I., Dupasquier, A., Badway, F., Gural, J., Pereira, N., Gmitter, A., Amatucci, G.G.The design of alternative nonaqueous high power chemistries. Appl. Phys. A 82, 615 (2005)CrossRefGoogle Scholar
10.Peigney, A., Laurent, C., Flahaut, E., Bacsa, R.R., Rousset, A.Specific surface area of carbon nanotubes and bundles of carbon nanotubes. Carbon 39, 507 (2001)CrossRefGoogle Scholar
11.Popov, V.N.Carbon nanotubes: Properties and application. Mater. Sci. Eng. 43, (3)61 (2004)Google Scholar
12.Cui, H.Nucleation and growth of nanoscaled one-dimensional materials. Ph.D. Thesis, Applied and Materials Science University of North Carolina at Chapel Hill (2001)Google Scholar
13.Obreja, V.V.N.On the performance of supercapacitors with electrodes based on carbon nanotubes and carbon activated material—A review. Physica E 40, 2596 (2008)CrossRefGoogle Scholar
14.Ye, C., Lin, Z.M., Hui, S.Z.Electrochemical and capacitance properties of rod-shaped MnO2 for supercapacitor. J. Electrochem. Soc. 152, (6)A1272 (2005)Google Scholar
15.Chu, H., Lai, Q., Hao, Y., Zhao, Y., Xu, X.Study of electrochemical properties and the charge/discharge mechanism for Li4Mn5O12/MnO2-AC hybrid supercapacitor. J. Appl. Electrochem. 39, (10)2007 (2009)CrossRefGoogle Scholar
16.Chu, H-Y., Lai, Q-Y., Wang, L., Lu, J-F., Zhao, Y.Preparation of MnO2/WMNT composite and MnO2/AB composite by redox deposition method and its comparative study as supercapacitive materials. Ionics 16, (3)233 (2009)CrossRefGoogle Scholar
17.Fischer, A.E., Saunders, M.P., Pettigrew, K.A., Rolison, D.R., Long, J.W.Electroless deposition of nanoscale MnO2 on ultraporous carbon nanoarchitectures: Correlation of evolving pore-solid structure and electrochemical performance. J. Electrochem. Soc. 155, (3)A246 (2008)CrossRefGoogle Scholar