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Enhanced Performance of Symmetric Double Layer Capacitor by Flexible Binder-free SWCNT Membrane Electrodes

Published online by Cambridge University Press:  10 April 2013

Danhao Ma ,
James Kalupson ,
Pralav Shetty ,
Kofi Adu  and
Ramakrishnan Rajagopalan
Danhao Ma
Affiliation:
Department of Energy Engineering, The Pennsylvania State University, University Park, PA 16802. U.S.A.
James Kalupson
Affiliation:
Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, U.S.A.
Pralav Shetty
Affiliation:
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, U.S.A.
Kofi Adu
Affiliation:
Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, U.S.A. Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, U.S.A.
Ramakrishnan Rajagopalan
Affiliation:
Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, U.S.A.
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Abstract

We present results on an aqueous symmetric double layer electrochemical capacitor (EDLC) constructed with a flexible binder-free single wall carbon (SWCNTs) membrane as electrodes. The capacitors were cycled from 0 to 1V @ 10 A/g for 10,000 cycles with 99.9% coulombic efficiency and 94% energy efficiency, and 100% depth of discharge. The power performance of the aqueous symmetric SWCNTs membrane capacitor is almost 100 –1000 times better than commercial non-aqueous EDLC capacitors.

Keywords

energy generationenergy storagenanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1505: Symposium W – Carbon Nanomaterials , 2013 , mrsf12-1505-w03-38
Copyright
Copyright © Materials Research Society 2013

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