標題: Achieving efficient poly(3,4-ethylenedioxythiophene)-based supercapacitors by controlling the polymerization kinetics
作者: Huang, Jen-Hsien
Chu, Chih-Wei
光電工程學系
Department of Photonics
關鍵字: Conducting polymer;Capacitors;Molecular weight;Conductivity;Poly(3,4-ethylenedioxythiophene) (PEDOT)
公開日期: 1-八月-2011
摘要: In this study, we have prepared a series of poly(3,4-ethylenedioxythiophene) (PEDOT) with various molecular weight by using an inhibitor, imidazole (Im). The X-ray diffraction (XRD) results show that the PEDOT with larger molecular weight enhances the polymer chain ordering and stacking which leads to higher conductivity. With increasing the amount of Im, the conductivity of PEDOT can be increased from 4.01 S cm(-1) (Im = 0.0 M) to 153.6S cm(-1) (Im = 1.8 M). Comparisons of the cyclic voltammetry (CV), it enables correlation between the conductivity and specific capacitance, which is important for understanding the electrochemical capacitive behavior of conjugated polymer for pseudo-capacitor application. The PEDOT prepared with 1.8M Im shows a specific capacitance of 124 F g(-1), which is 2.2 times larger than the one without Im (57 F g(-1)). (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.electacta.2011.03.044
http://hdl.handle.net/11536/20593
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2011.03.044
期刊: ELECTROCHIMICA ACTA
Volume: 56
Issue: 20
起始頁: 7228
結束頁: 7234
顯示於類別:期刊論文


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  1. 000294881400049.pdf