Smart copolymers of ditriphenylaminedithienothiophene with ethylenedioxythiophene for multicolor energy storage systems

Topal S., Karakaya O., Sezer E., Ustamehmetoğlu B., Öztürk T.

INTERNATIONAL JOURNAL OF ENERGY RESEARCH, vol.46, no.15, pp.21979-21988, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 15
  • Publication Date: 2022
  • Doi Number: 10.1002/er.8409
  • Journal Name: INTERNATIONAL JOURNAL OF ENERGY RESEARCH
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Environment Index, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Page Numbers: pp.21979-21988
  • Keywords: dithienothiophene, electrochromic, energy storage, ethylenedioxythiophene, triphenylamine, ELECTROCHROMIC PROPERTIES, PYRROLE, PEDOT, 3,4-ETHYLENEDIOXYTHIOPHENE, ELECTROPOLYMERIZATION, SUPERCAPACITOR, THIOPHENE, POLYMERS, PERFORMANCE, ELECTRODES
  • Istanbul Technical University Affiliated: Yes

Abstract

Energy storage materials, having multifunctional properties, are particularly important for the development of intelligent power systems. In this study, conjugated monomers 4 ',4 '-(dithieno[3,2-b:2 ',3 '-d]thiophene-3,5-diyl)bis(N,N-diphenyl-[1,1 '-biphenyl]-4-amine) (DTTpTPA, D) and 3,4-ethylenedioxythiophene (EDOT, E) were electrocopolymerized on ITO surface in different mole ratios. The copolymer films were investigated in terms of energy storage, electrochromic properties and surface morphology. Inclusion of EDOT units into the polymer chain made a significant impact on the energy storage and electrochromic properties of the resultant copolymers. The P(D1-1E) film, which was obtained at a mole ratio of n(D)/n(E) = 1/1, showed the best capacitance value of 22 mF cm(-2). All the copolymers displayed a wide range of color change during their redox processes. The best coloration efficiency value of 196 C-1 cm(2) was obtained with P(D10-1E) film, having multi-electrochromic property of red, green, gray and blue colors. A symmetric solid-state energy storage device of P(D1-1E) exhibited a capacitance of 6.58 mF cm(-2) with high energy and high-power density, which proved that P(D1-1E) is a good candidate for energy storage applications.