Performance of experimental carbon blacks in aqueous supercapacitors

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2004.08.14
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TypeArticle
Journal titleJournal of Power Sources
Volume140
Issue1
Pages203210; # of pages: 7
Subjectsupercapacitor; electrochemical capacitor; specific capacitance; carbon; aqueous electrolyte
AbstractFour samples of carbon black were synthesised for use in aqueous supercapacitors. They were designed to have different surface areas and pore size distributions. The objectives were to identify the attributes that are necessary to obtain a high specific capacitance and to attempt to correlate different physical characteristics of the carbon electrodes with their capacitance. A fifth carbon was obtained from another laboratory for comparison. Carbon electrodes were analysed using both acidic and alkaline electrolytes. Their capacitance was measured at room temperature and at −40 °C, using slow sweep cyclic voltammetry. Electrochemical impedance spectroscopy was also performed on the carbon electrodes using the same electrolytes and temperatures. The results from these measurements are discussed in terms of the surface areas and pore size distributions of the samples, which were measured using the BET technique.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number52094
NPARC number16131764
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Record identifier244a4c6c-4361-4bf3-8825-8e0d3d9be7cf
Record created2010-09-30
Record modified2016-05-09
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