All conducting polymer electrodes for asymmetric solid-state supercapacitors
Type
ArticleKAUST Department
Materials Science and Engineering ProgramDate
2015Permanent link to this record
http://hdl.handle.net/10754/579539
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Show full item recordAbstract
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. ASponsors
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 ChemistryJournal
Journal of Materials Chemistry AAdditional Links
http://xlink.rsc.org/?DOI=C5TA00829Hae974a485f413a2113503eed53cd6c53
10.1039/C5TA00829H