PEDOT:PSS and Its Composites for Flexible Supercapacitors
Zhen Su, Yingzhi Jin, Hongmei Wang, Hongmei Wang, Zaifang Li, Liang Huang, Hao Wang, Hao Wang
Abstract
Flexible supercapacitors (SCs) have been extensively studied because of their promising potential in wearable electronics. Poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) is an efficient active material for the fabrication of high-performance flexible SCs owing to its high conductivity, high theoretical capacitance, and excellent flexibility. However, the numerous literature studies involving PEDOT:PSS-based flexible SCs in recent years are randomly distributed. There is a need to give an overview of achievements to date to identify the current direction and guide future research. Herein, we first focus on the origin of PEDOT:PSS capacitance and then systematically review the recent progress on PEDOT:PSS-based flexible SCs from the viewpoint of PEDOT:PSS-based fiber, film, and three-dimensional porous block. In the conclusion, a perspective on the challenges and outlook of PEDOT:PSS-based flexible SCs is given . It is expected that the design of PEDOT:PSS and its composites will pave the way for the practical application of flexible SCs.