Solution Processed PEDOT Analogues in Electrochemical Supercapacitors

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• 作者：Anna M. Österholm ; James F. Ponder Jr. ; Justin A. Kerszulis ; John R. Reynolds
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 1, 2016
• 年：2016
• 卷：8
• 期：21
• 页码：13492-13498
• 全文大小：413K
• 年卷期：0
• ISSN：1944-8252

文摘

We have designed fully soluble ProDOT_x-EDOT_y copolymers that are electrochemically equivalent to electropolymerized PEDOT without using any surfactants or dispersants. We show that these copolymers can be incorporated as active layers in solution processed thin film supercapacitors to demonstrate capacitance, stability, and voltage similar to the values of those that use electrodeposited PEDOT as the active material with the added advantage of the possibility for large scale, high-throughput processing. These Type I supercapacitors provide exceptional cell voltages (up to 1.6 V), highly symmetrical charge/discharge behavior, promising long-term stability exceeding 50 000 charge/discharge cycles, as well as energy (4–18 Wh/kg) and power densities (0.8–3.3 kW/kg) that are comparable to those of electrochemically synthesized analogues.