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    All conducting polymer electrodes for asymmetric solid-state supercapacitors

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    Type
    Article
    Authors
    Kurra, Narendra cc
    Wang, Ruiqi
    Alshareef, Husam N. cc
    KAUST Department
    Materials Science and Engineering Program
    Date
    2015
    Permanent link to this record
    http://hdl.handle.net/10754/579539
    
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    Abstract
    In this study, we report the fabrication of solid-state asymmetric supercapacitors (ASCs) based on conducting polymer electrodes on a plastic substrate. Nanostructured conducting polymers of poly(3,4-ethylenedioxythiophene), PEDOT, and polyaniline (PANI) are deposited electrochemically over Au-coated polyethylene naphthalate (PEN) plastic substrates. Due to the electron donating nature of the oxygen groups in the PEDOT, reduction potentials are higher, allowing it to be used as a negative electrode material. In addition, the high stability of PEDOT in its oxidised state makes it capable to exhibit electrochemical activity in a wide potential window. This can qualify PEDOT to be used as a negative electrode in fabricating asymmetric solid state supercapacitors with PANI as a positive electrode while employing polyvinyl alcohol (PVA)/H2SO4 gel electrolyte. The ASCs exhibit a maximum power density of 2.8 W cm−3 at an energy density of 9 mW h cm−3, which is superior to the carbonaceous and metal oxide based ASC solid state devices. Furthermore, the tandem configuration of asymmetric supercapacitors is shown to be capable of powering a red light emitting diode for about 1 minute after charging for 10 seconds.
    Citation
    All conducting polymer electrodes for asymmetric solid-state supercapacitors 2015, 3 (14):7368 J. Mater. Chem. A
    Sponsors
    Research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). Authors thank the Advanced Nanofabrication, Imaging and Characterization Laboratory at KAUST for their excellent support. Ruiqi Wang wants to thank SRSI for giving this opportunity and Ms. Tsvetanka B. Sendova for her assistance. NK acknowledges the support from SABIC Postdoctoral Fellowship.
    Publisher
    Royal Society of Chemistry
    Journal
    Journal of Materials Chemistry A
    DOI
    10.1039/C5TA00829H
    10.1039/c5ta00829h
    Additional Links
    http://xlink.rsc.org/?DOI=C5TA00829H
    ae974a485f413a2113503eed53cd6c53
    10.1039/C5TA00829H
    Scopus Count
    Collections
    Articles; Material Science and Engineering Program

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