Supercapacitor studies of activated carbon functionalized with poly(ethylene dioxythiophene): Effects of surfactants, electrolyte concentration on electrochemical properties
Activated carbon; Electrolyte; PEDOT; Supercapacitor; Surfactants
Electropolymerization of poly(ethylene dioxythiophene) (PEDOT) on activated carbon (AC) was performed using different surfactants such as anionic surfactant (sodium dodecyl sulfate), protonic surfactant (camphor sulphonic acid) and non-ionic surfactant (Triton) in 0.1 M H2SO4. The effects of concentration of different surfactants for electrodeposition of PEDOT on AC were analyzed using electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and SEM techniques. Supercapacitors (SC) were fabricated using AC/PEDOT composite electrodes and 0.1 M H2SO4 as an electrolyte. The specific capacitance (Cs) values were calculated using CV at different concentrations of surfactants, electrolytes and variation of potential. The electrolyte containing 0.1 M H2SO4 and 0.02 M camphor sulphonic acid showed to have the highest specific capacitance value of 240 Fg?1 than other surfactant based SCs. Galvanostatic charge/discharge at varying current density were performed on SCs containing different surfactant based electrodes to study their cyclic stability. 2020
Sudhakar Y.N.; Selvakumar M.; Krishna Bhat D.; Karazhanov S.; Subash Chandrabose R.
https://doi.org/10.1016/j.matlet.2020.127978 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084656461&doi=10.1016%2fj.matlet.2020.127978&partnerID=40&md5=10a537b22474df89715f54c710a20384
Sudhakar Y.N., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, Karnataka, India; Selvakumar M., Department of Chemistry, Manipal Institute of Technology, Manipal, Karnataka, India; Krishna Bhat D., Department of Chemistry, National Institute of Technology, Surathkal, Mangaluru, Karnataka, India; Karazhanov S., Department of Solar Energy, Institute for Energy Technology, Kjeller, Norway; Subash Chandrabose R., Centre for Advanced Research and Development (CARD), Vels Institute of Science, Technology and Advanced Studies, Chennai, 117, India