A method to obtain a Ragone plot for evaluation of carbon nanotube supercapacitor electrodes
Repository Usage Stats
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. © 2010 Materials Research Society.
Published Version (Please cite this version)10.1557/jmr.2010.0192
Publication InfoRaut, AS; Parker, CB; & Glass, JT (2010). A method to obtain a Ragone plot for evaluation of carbon nanotube supercapacitor electrodes. Journal of Materials Research, 25(8). pp. 1500-1506. 10.1557/jmr.2010.0192. Retrieved from https://hdl.handle.net/10161/4609.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
More InfoShow full item record
Professor of Electrical and Computer Engineering
Jeffrey T. Glass is a Professor in the Department of Electrical and Computer Engineering with a secondary appointment as a Professor in the Department of Mechanical Engineering and Materials Science at Duke University. He is the Faculty Director of Duke's Master of Engineering Management Program and also holds the Hogg Family endowed chair in Engineering Management and Entrepreneurship. Formerly, he was the Co-Director of The Institute for the Integration of Management and Engineering
Senior Laboratory Administrator
Alphabetical list of authors with Scholars@Duke profiles.