Flexible supercapacitors with vertically aligned multiwalled carbon nanotubes (MWCNT) directly synthesized on a metal foil.

ORAL

Abstract

We will present the results of our investigation on all solid-state flexible supercapacitors using MWCNT directly grown on ultrathin Inconel foil. A poly(vinyl alcohol)/phosphoric acid (PVA/H3PO4) polymer gel has been used as both the electrolyte and the separator. Since the aligned MWCNT has a higher effective surface area and the direct synthesis on a metal decreases the resistance at the interface, these supercapacitors display improved performance with the highest measured areal specific capacitance of 19.6 mF/cm2. Key device parameters, measured and analyzed with standard electrochemical circuit modeling will also be presented. The flexibility of the devices was validated by testing them under different bending angles. These devices can withstand a large amount of such bending cycles, making them more durable and robust energy storage devices.

*Authors CD and ST acknowledge the support through the NSF REU Grant # 1757954 and DoD ASSURE programs. Partial support through NSF-CHE Grant # 1506277 is also acknowledged.

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Presenters

  • Thushani De Silva

    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale

Authors

  • Thushani De Silva

    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale

  • Cole Damery

    • Physics, Southern Illinois University Carbondale

  • Robinson Karunanithy

    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale

  • Rana Alkhaldi

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Physics, Southern Illinois University Carbondale

  • Prasanna Dnyaneshwar Patil

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale

  • Milinda Wasala

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale

  • Pooplasingam Sivakumar

    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale

  • Saikat Talapatra

    • Department of Physics, Southern Illinois University Carbondale, Carbondale, IL, USA
    • Department of Physics, Southern Illinois University Carbondale, IL-62901, USA.
    • Southern Illinois University Carbondale
    • Physics, Southern Illinois University Carbondale
    • Department of Physics, Southern Illinois University Carbondale