Regulating monomer assembly to enhance PEDOT capacitance performance via different oxidants

被引：14
作者：
Chen, Xiao [1 ,2 ]
Zhu, Chunyan [1 ]
Jiang, Fengxing [1 ]
Liu, Guoqiang [1 ]
Liu, Congcong [2 ]
Jiang, Qinglin [3 ]
Xu, Jingkun [1 ,2 ]
An, Jianyu [1 ]
Liu, Peipei [1 ]
机构：
[1] Jiangxi Sci & Technol Normal Univ, Dept Phys, Nanchang 330013, Jiangxi, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Flexible Elect Innovat Inst FEII, Nanchang 330013, Jiangxi, Peoples R China
[3] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2021年 / 601卷
基金：
中国国家自然科学基金;
关键词：
Capacitive performance; PEDOT; Vapor phase polymerization; Oxidants; SUPERCAPACITOR; POLYMERIZATION; ELECTRODE; RAMAN;
D O I：
10.1016/j.jcis.2021.05.122
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The development of poly(3,4-ethylenedioxythiophene) (PEDOT) with high specific capacitance is the key to pursuing high-performance supercapacitors, and the electrochemical properties of PEDOT are closely related to the oxidation degree and conjugated chain length of its molecular chain. In this work, the influences of various oxidants (FeCl3 , Fe(Tos)(3) and MoCl5) on the molecular chain structure and capacitive properties of PEDOT via vapor phase polymerization were systematically investigated. Fe(Tos)(3) can significantly improve the degree of oxidation and the length of the conjugated chain of PEDOT compared to FeCl3 and MoCl5, enhancing the conductivity and providing more active sites for Faraday reaction. Therefore, the PEDOT/P(Fe(Tos)(3)) electrode displays a considerable conductivity of 73 S cm(-1) , high areal capacitance (419 mF cm(-2)) and excellent electrochemical stability under the different bent state. Moreover, the conjugated structure strengthens the interaction between PEDOT chains, achieving good cycle stability. Therefore, Fe(Tos)(3) is an ideal oxidant for obtaining high-performance PEDOT electrode materials. (C) 2021 Elsevier Inc. All rights reserved.
引用
收藏
页码：265 / 271
页数：7
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