Flexible Single-wall Carbon Nanotube Membrane Symmetric Aqueous Double Layer Electrochemical Capacitor

ORAL

Abstract

We present preliminary results on an aqueous symmetric double layer electrochemical capacitor (EDLC) constructed with 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.

*This Work is Funded by The Pennsylvania State University Materials Research Institute

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Authors

  • Pralav Shetty

    • Mechanical Engineering Department, The Pennsylvania State University, University Park, PA 16802, USA

  • Jim Kapulson

    • Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA

  • Ramakrishnan Rajagopalan

    • Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA

  • Kofi Adu

    • Department of Physics, The Pennsylvania State University, Altoona College, Altoona, PA 16601, USA