Carbon supercapacitors [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 14 pages : digital, PDF file
Additional Creators: Sandia National Laboratories, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

Carbon supercapacitors are represented as distributed RC networks with transmission line equivalent circuits. At low charge/discharge rates and low frequencies these networks approximate a simple series R{sub ESR}C circuit. The energy efficiency of the supercapacitor is limited by the voltage drop across the ESR. The pore structure of the carbon electrode defines the electrochemically active surface area which in turn establishes the volume specific capacitance of the carbon material. To date, the highest volume specific capacitance reported for a supercapacitor electrode is 220F/cm³ in aqueous H₂SO₄ (10) and ∼60 F/cm³ in nonaqueous electrolyte (8).

Report Numbers

E 1.99:sand--93-2421c
E 1.99: conf-9311115--1
conf-9311115--1
sand--93-2421c

Subject(s)

Engineering

Other Subject(s)

Note

Published through SciTech Connect.
11/01/1993.
"sand--93-2421c"
" conf-9311115--1"
"DE94002652"
"GB0103012"
Symposium on science of advanced batteries,Cleveland, OH (United States),8-9 Nov 1993.
Delnick, F.M.

Funding Information

AC04-94AL85000

View MARC record | catkey: 14110823