TY - JOUR
T1 - Solid-State Supercapacitor Constructed with Organic Electrochromic Electrodes Based on Dithienothiophene and 3,4-Ethylenedioxythiophene
AU - Topal, Sebahat
AU - Demirtas, Ilknur
AU - Ertas, Erdal
AU - Ustamehmetoglu, Belkis
AU - Sezer, Esma
AU - Ozturk, Turan
N1 - Publisher Copyright:
© 2023 American Chemical Society
PY - 2023/11/27
Y1 - 2023/11/27
N2 - Capacitive and electrochromic behaviors of electrodeposited poly{4,4′-[2,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl) dithieno[3,2-b:2′,3′-d]thiophene-3,5-diyl] dibenzonitrile}, P[E-CNDTT-E], are reported. The morphological, structural, and electrochemical properties of the polymer are determined by atomic force microscopy, Fourier transform infrared, cyclic voltammetry, spectroelectrochemical measurements, electrochemical impedance spectroscopy, and galvanostatic charging/discharging measurements. Theoretical calculations support the planarity of the structure through O···S interactions, which allow the polymer to have a low band gap of 1.43 eV. P[E-CNDTT-E] has a high capacitance of 223 F g-1 at the current density of 1 A g-1 and displays a color change from purple to gray with an optical contrast of 30% and a coloration efficiency of 450 cm2 C-1 upon applying cathodic potential. The solid-state supercapacitor is constructed, which has a high specific capacitance of 63 F g-1 and a significant energy density of 6.5 W h kg-1. Additionally, the device retains 90% of its capacitance after 8000 cycles.
AB - Capacitive and electrochromic behaviors of electrodeposited poly{4,4′-[2,6-bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl) dithieno[3,2-b:2′,3′-d]thiophene-3,5-diyl] dibenzonitrile}, P[E-CNDTT-E], are reported. The morphological, structural, and electrochemical properties of the polymer are determined by atomic force microscopy, Fourier transform infrared, cyclic voltammetry, spectroelectrochemical measurements, electrochemical impedance spectroscopy, and galvanostatic charging/discharging measurements. Theoretical calculations support the planarity of the structure through O···S interactions, which allow the polymer to have a low band gap of 1.43 eV. P[E-CNDTT-E] has a high capacitance of 223 F g-1 at the current density of 1 A g-1 and displays a color change from purple to gray with an optical contrast of 30% and a coloration efficiency of 450 cm2 C-1 upon applying cathodic potential. The solid-state supercapacitor is constructed, which has a high specific capacitance of 63 F g-1 and a significant energy density of 6.5 W h kg-1. Additionally, the device retains 90% of its capacitance after 8000 cycles.
KW - dithienothiophene
KW - EDOT
KW - electrochromic
KW - energy storage
KW - supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85178154606&partnerID=8YFLogxK
U2 - 10.1021/acsaem.3c01851
DO - 10.1021/acsaem.3c01851
M3 - Article
AN - SCOPUS:85178154606
SN - 2574-0962
VL - 6
SP - 11532
EP - 11540
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 22
ER -