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제125회 대한화학회 학술발표회 및 총회 Electropolymerization of PEDOT/Carbon-dots Composites for Supercapacitor Application

2020년 2월 6일 16시 45분 34초
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저자 및
Ngoc Chau, Ik-Soo Shin1,*, Thi Thuy Hang Nguyen2
Department of Chemistry, Soongsil University, Korea
1Department of Chemistry, Soongsil University / Information Communication, Korea
2Information Communication, Materials and Chemistry Convergency Technology, Korea
Conducting polymer nanocomposites (CPCs), considered as next-generation materials in a variety of electrical applications such as flexible electronics thermal electronics, and biosensors, have attracted considerable attention due to their advantages of physical flexibility, unique optical, and electronic properties.[1,2] So far, most of the studies on the development of CPCs have focused on chemical modification of polymer chains or the mechanical mixing of the polymers with fillers such as inorganic nanoparticles, graphene, and carbon nanotubes.[3] In this work, we developed a new type of conductive nanocomposite, which includes the thin film of poly(3,4-ethylene dioxythiophene) (PEDOT) and carbon-dots (C-dots). The electropolymerization of the monomer (EDOT) and C-dots was carried out on the surface of an indium tin oxide (ITO)electrode. The absorption and photoluminescence (PL) revealed that C-dots successfully were incorporated into the PEDOT layer during electropolymerization. By controlling the deposition method and the content of C-dots (0.25, 0.5, 1.0, and 2.0 wt%), composites film with various forms, morphology, and compositions could be successfully produced. Crystallinity improvement of the nanocomposite thin film and conformational change of PEDOT were confirmed by Raman spectroscopy and x-ray diffraction (XRD). As a result, it was also demonstrated that the films, compared to PEDOT:ClO4 thin films as the control, exhibited an increased the electrochemical capacity (165%) and retained a specific capacitance of 80% of the initial value after 500 consecutive cycles. Reference [1]. X. Huang, X. Qi, F. Boey, H. Zhang, Chem. Soc. Rev., 2012, 41, 666. [2]. X. Jian, J.-G. Li, H.-M. Yang, L.-L Cao, E.-H. Zhang, Z.-H. Liang, Carbon, 2017, 114, 533. [4]. T. Chen, P. J. Colver, S. A. F. Bon, Adv. Mater., 2007, 19, 2286.