Supercapacitor studies of activated carbon functionalized with poly (ethylene dioxythiophene): Effects of surfactants, electrolyte concentration on electrochemical properties

Sudhakar, Y N and Selvakumar, M and Bhat, Krishna D and Karazhanov, Smagul and Chandrabose, Raghu Subash (2020) Supercapacitor studies of activated carbon functionalized with poly (ethylene dioxythiophene): Effects of surfactants, electrolyte concentration on electrochemical properties. Materials Letters, 273. ISSN 0167-577X

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Abstract

Electropolymerization of poly(ethylene dioxythiophene) (PEDOT) on activated carbon (AC) was per�formed using different surfactants such as anionic surfactant (sodium dodecyl sulfate), protonic surfac�tant (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 electro�chemical 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

Item Type: Article
Uncontrolled Keywords: Surfactants Activated carbonPEDOT Electrolyte Supercapacitor
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 23 Apr 2021 10:25
Last Modified: 23 Apr 2021 10:25
URI: http://eprints.manipal.edu/id/eprint/156714

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