High-Conductivity, Flexible and Transparent PEDOT:PSS Electrodes for High Performance Semi-Transparent Supercapacitors

Abstract

Herein, we report a flexible high-conductivity transparent electrode (denoted as S-PH1000), based on conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), and itsapplication to flexible semi-transparentsupercapacitors. A high conductivity of 2673 S/cm was achieved for the S-PH1000 electrode on flexible plastic substrates via a H2SO4 treatment with an optimized concentration of 80 wt.%. This is among the top electrical conductivities of PEDOT:PSS films processed on flexible substrates. As for the electrochemical properties,a high specific capacitance of 161F/g was obtained from the S-PH1000 electrode at a current density of 1 A/g. Excitingly, a specific capacitance of 121 F/g was retained even when the current density increased to 100 A/g, which demonstrates the high-rate property of this electrode. Flexible semi-transparent supercapacitors based on these electrodes demonstrate high transparency, over 60%, at 550 nm. A high power density value, over 19,200 W/kg,and energy density, over 3.40 Wh/kg, was achieved. The semi-transparent flexible supercapacitor was successfully applied topower a light-emitting diode.

PEDOT:PSS-Based Conductive Textiles and Their Applications

“…Societal needs such as new functionality, comfort, and aesthetic values from daily use to critical health-related applications are the driving forces for the development of smart textile materials. The recent developments in the fields of textiles, electronics, information technology, advanced materials and polymers are paving the way for the development of smart textile materials and their application [12][13][14][15][16][17][18][19]. The fact that textiles are an interface between the wearer and the surrounding with large and permanent surface contact make them ideally suitable for large scale and long-term health monitoring.…”

Doping and Design of Flexible Transparent Electrodes for High‐Performance Flexible Organic Solar Cells: Recent Advances and Perspectives

“…[1,39,58−66] The other method (namely posttreatments) is to employ the polar organic compounds, salts, acids (mild acids, strong acids and super acids), etc, for soaking the pristine PEDOT:PSS films. [ 48–56,67–71 ]…”

Embedded-grid silver transparent electrodes fabricated by selective metal condensation

“…Notably, for the same far-field transparency the sheet resistance of this flexible, embedded Ag grid electrode is lower than can be achieved using PEDOT:PSS, 26 carbon nanotube networks 27 or multi-layer graphene films, 28 and is comparable to that achievable using continuous thin metal films. 1 However, there is considerable scope for further optimization of the grid-line spacing and height, as detailed in ref.…”