4.7 Article

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

期刊

POLYMERS
卷 12, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/polym12020450

关键词

conducting polymer; PEDOT:PSS; high conductivity; semi-transparent supercapacitors; high power density

资金

  1. National Natural Science Foundation of China [51902134]
  2. Fundamental Research Funds for the Jiaxing University [CDN70518005, CD70519019]
  3. Jiaxing Public Welfare Research Program in 2019 [2019AY11007]
  4. General Scientific Research Project of Department of Education of Zhejiang Province [Y201942334]
  5. Innovation Projects of Department of Education of Guangdong Province [2017KQNCX197]

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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.

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