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Increasing Energy Storage in Activated Carbon based Electrical Double Layer Capacitors through Plasma Processing

Published online by Cambridge University Press:  09 June 2015

Marcelis L. Muriel ,
Rajaram Narayanan  and
Prabhakar R. Bandaru
Marcelis L. Muriel
Affiliation:
Program in Materials Science, University of California, San Diego, La Jolla, CA 920393, U.S.A.
Rajaram Narayanan
Affiliation:
Department of Nanoengineering, University of California, San Diego, La Jolla, CA 920393, U.S.A.
Prabhakar R. Bandaru
Affiliation:
Program in Materials Science, University of California, San Diego, La Jolla, CA 920393, U.S.A. Department of Nanoengineering, University of California, San Diego, La Jolla, CA 920393, U.S.A. Department of Mechanical & Aerospace Engineering, University of California, San Diego, La Jolla, CA 920393, U.S.A.
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Abstract

We present a methodology to enhance the electrical capacitance of activated carbon (AC) electrodes based on the introduction of electrically charged defects through argon plasma processing. Extensive characterization using electrochemical techniques incorporating cyclic voltammetry, constant current charge/discharge, and electrical impedance spectroscopy indicated a close to seven-fold increase in capacitance with respect to untreated AC electrodes, not subject to plasma processing.

Keywords

energy storagepowder processingreactive ion etching

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References

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