High Performance of Supercapacitor from PEDOT:PSS Electrode and Redox Iodide Ion Electrolyte

Xing Gao; Lei Zu; Xiaomin Cai; Ce Li; Huiqin Lian; Yang Liu; Xiaodong Wang; Xiuguo Cui

doi:10.3390/nano8050335

High Performance of Supercapacitor from PEDOT:PSS Electrode and Redox Iodide Ion Electrolyte

Nanomaterials (Basel). 2018 May 16;8(5):335. doi: 10.3390/nano8050335.

Authors

Xing Gao^{1

2}, Lei Zu³, Xiaomin Cai^{4

5}, Ce Li^{6

7}, Huiqin Lian^{8

9}, Yang Liu^{10

11}, Xiaodong Wang¹², Xiuguo Cui¹³

Affiliations

¹ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. gaoxing@bipt.edu.cn.
² State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. gaoxing@bipt.edu.cn.
³ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. zulei@bipt.edu.cn.
⁴ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. 13522433853@163.com.
⁵ State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. 13522433853@163.com.
⁶ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. lice0502@163.com.
⁷ State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. lice0502@163.com.
⁸ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. lianhuiqin@bipt.edu.cn.
⁹ Beijing Key Laboratory of Specialty Elastomer Composite Materials, Beijing Institute of Petrochemical Technology, Beijing 102617, China. lianhuiqin@bipt.edu.cn.
¹⁰ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. yang.liu@bipt.edu.cn.
¹¹ Beijing Key Laboratory of Specialty Elastomer Composite Materials, Beijing Institute of Petrochemical Technology, Beijing 102617, China. yang.liu@bipt.edu.cn.
¹² State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China. wangxd@mail.buct.edu.cn.
¹³ School of Material Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China. cuixiuguo@bipt.edu.cn.

Abstract

Insufficient energy density and poor cyclic stability is still challenge for conductive polymer-based supercapacitor. Herein, high performance electrochemical system has been assembled by combining poly (3,4-ethylenedioxythiophene) (PEDOT):poly (styrene sulfonate) (PSS) redox electrode and potassium iodide redox electrolyte, which provide the maximum specific capacity of 51.3 mAh/g and the retention of specific capacity of 87.6% after 3000 cycles due to the synergic effect through a simultaneous redox reaction both in electrode and electrolyte, as well as the catalytic activity for reduction of triiodide of the PEDOT:PSS.

Keywords: PEDOT:PSS; catalysis; redox electrolyte; stability.