Abstract
A textile-based energy storage device with electroactive PEDOT:PSS (poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate)) polymer functioning as a solid-state polyelectrolyte has been developed. The device was fabricated on textile fabric with two plies of stainless-steel electroconductive yarn as the electrodes. In this study, cyclic voltammetry and electrochemical impedance analysis were used to investigate ionic and electronic activities in the bulk of PEDOT:PSS and at its interfaces with stainless steel yarn electrodes. The complex behavior of ionic and electronic origins was observed in the interfacial region between the conductive polymer and the electrodes. The migration and diffusion of the ions involved were confirmed by the presence of the Warburg element with a phase shift of 45° (n = 0.5). Two different equivalent circuit models were found by simulating the model with the experimental results: (QR)(QR)(QR) for uncharged and (QR)(QR)(Q(RW)) for charged samples. The analyses also showed that the further the distance between electrodes, the lower the capacitance of the cell. The distribution of polymer on the cell surface also played important role to change the capacitance of the device. The results of this work may lead to a better understanding of the mechanism and how to improve the performance of the device.
Highlights
Research on flexible and wearable electronics (e-textiles) has been gaining momentum in recent years with a wide range of applications covering the use in medical, military, sport and outdoor activities as well as everyday consumer applications
It must be pointed out that the spreading of PEDOT:PSS polymer might have caused an increase in the length of conduction path within the polymer, which eventually reduced the capacitance of the system
During the course of measurements, we found that samples prepared with thinner PEDOT:PSS coating showed no apparent peak on CV (Cyclic Voltammetry) measurements neither any accurate Electrochemical impedance spectroscopy (EIS) results, and cannot be presented in this report
Summary
Research on flexible and wearable electronics (e-textiles) has been gaining momentum in recent years with a wide range of applications covering the use in medical, military, sport and outdoor activities as well as everyday consumer applications. The work was focused on fabrication of a simple textile energy storage device by using a coating of PEDOT:PSS as a solid electrolytic layer covering three parallel silver-coated polyamide yarn electrodes on a polyamide fabric. Stainless-steel filament yarns were used as the electrodes for our textile-based energy storage device while PEDOT:PSS, presumably acted as the electrolyte, facilitated the generation of electrical energy. Electrochemical impedance spectroscopy (EIS) is a sensitive technique for determining the mechanistic pathway of an electrochemical reaction [14] It has been one of the routine analytical tools for the characterization and diagnosis of capacitors including textile energy storage devices. Cyclic voltammetry and EIS were used to investigate the ionic and electronic activity within the bulk of PEDOT:PSS and at its interfaces with stainless-steel yarn electrodes in our textile energy device. Equivalent circuit models were adopted as an approach to elucidate the contribution of different charge transfer or transport processes to the overall impedance of electrodes in the device
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
