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Journal Article
Dual‐function electrochromic supercapacitor with graphene electrode
- Authors
- Jisu Han, Gyu-Hyeon Jang, Dae Kyom Kim, Joo Yeon Kim, Jin Wook Shin, Chi-Sun Hwang, Yuanzhe Piao, Tae-Dong Kim
- Issue Date
- 2022-06
- Citation
- International Journal of Energy Research, v.46, no.8, pp.10822-10832
- ISSN
- 0363-907X
- Publisher
- Wiley
- Language
- English
- Type
- Journal Article
- Abstract
- In order to the immense demand for the development of energy-storage systems, layer-optimized graphene and chemically modified poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) were utilized as the electrode and electrochemical material, respectively, to fabricate a device that exhibited electrochromic and supercapacitive functions. The electrochemical properties of the device with the graphene electrode were compared with those of a similar device with ITO as the electrode, and a remarkable synergetic effect was observed in the former, likely owing to strong ?-? interactions between graphene and PEDOT:PSS. The colored and bleached transmittances of the device with the graphene electrode were 20.6% and 59.3%, respectively, at a wavelength of 650 nm, which are indicative of its electrochromic behavior. Furthermore, the galvanostatic charge/discharge curves, which are indicative of the electrochemical-energy-storage performances, were in good agreement with the clearly visible transmittance change of the device. The device with the graphene electrode exhibited a maximum areal capacitance of 1.08 mF cm?닋2 at a current density of 0.001 mA cm?닋2, which was higher than that of the ITO-based electrode. Our approach for fabricating graphene devices with modified PEDOT:PSS could be helpful in designing dual-function devices for promising electrochromic energy-storage platforms.
- KSP Keywords
- 4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS), Areal capacitance, Dual function, Electrochemical properties, Electrochromic behavior, Electrochromic supercapacitor, Energy storage(ES), Galvanostatic charge/discharge, Graphene Devices, Graphene electrode, Storage system
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
(CC BY NC ND)
