Synthesis and Electrochemical Characterization of Liquid Phase Exfoliated Graphene Flakes

POSTER

Abstract

We will present our results on synthesis and characterization of few-layer graphene nanoflakes obtained from bulk graphite in isopropanol alcohol (IPA) using Liquid-phase exfoliation technique. Results of sample characterization using ultraviolet-visible (UV-VIS) spectroscopy, transmission electron microscopy (TEM), cyclic voltammetry (CV), electrical impedance spectroscopy (EIS), and galvanostatic charge-discharge will be presented. Potential use of these materials as electric double-layer capacitor (EDLC) electrodes were investigated using 6M KOH as electrolyte. We found that these devices possess specific capacitance values as high as 23F/g at a 1 mV scan rate. Several other parameters related to the EDLC performances will be presented in detail.

Authors

  • Julianna Richie

    • Department of Physics, Southern Illinois University Carbondale IL-62901, USA
    • None

  • Jacob Huffstutler

    • None

  • Milinda Wasala

    • None

  • Andrew Winchester

    • None

  • Sujoy Ghosh

    • None

  • Swastik Kar

    • None

  • Saikat Talapatra

    • None