Temperature-dependent electrosynthesis of PEDOT:PSS: enhanced Na+ transfer targeting high-performance Na-ion batteries

Simple item page
dc.contributor.authorSantos, Daniel R.
dc.contributor.authorZeferino, Jorge F.
dc.contributor.authorViana, Ana S.
dc.contributor.authorWijayantha, K. G. Upul
dc.contributor.authorLobato, Killian
dc.contributor.authorCorreia, Jorge P.
dc.date.accessioned2025-03-25T11:21:35Z
dc.date.available2025-03-25T11:21:35Z
dc.date.freetoread2025-03-25
dc.date.issued2025-04-01
dc.date.pubOnline2025-02-08
dc.description.abstractPoly(3,4-ethylenedioxythiophene):Poly(sodium 4-styrenesulfonate) (PEDOT:PSS) is a versatile conducting polymer with physicochemical properties favourable for energy storage applications, such as chemical and mechanic stability and flexibility. However, the temperature at which the polymer is synthesised can significantly influence its properties. In this study, a detailed investigation of the effect of temperature on the electroactivity, morphology, optical properties, and ionic/solvent transport during the redox conversion of potentiostatically and galvanostatically synthesised films was conducted. Electrochemical data, supported by ellipsometry, atomic force microscopy, microgravimetry, and probe beam deflection measurements, revealed that films synthesised at lower temperatures (0 °C) were more compact compared to those synthesised at higher temperatures (40 °C). Films synthesised at 0 °C also exhibited near-ideal reversibility, with a QO/QR ratio of ca. 1. Importantly, the 0 °C films showed a strong pseudocationic doping behaviour, characterised by predominant sodium ion exchange during redox processes. In contrast, films synthesised at 40 °C exhibited mixed ion participation (both sodium and perchlorate), which could negatively impact the performance of electrode material in battery applications. This study demonstrates the potential of PEDOT:PSS as a versatile material for sodium ion cathodes, with properties that can be finely tuned through the synthesis temperature, yielding more compact ion-storage films at lower temperatures.
dc.description.journalNameElectrochimica Acta
dc.description.sponsorshipFrench National Centre for Scientific Research, Fundação para a Ciência e Tecnologia
dc.description.sponsorshipThis work was funded by the Portuguese Fundação para a Ciência e a Tecnologia (FCT) I.P./MCTES through projects UIDB/00100/2020 and UIDP/00100/2020– Centro de Química Estrutural.
dc.identifier.citationSantos DR, Zeferino JF, Viana AS, et al., (2025) Temperature-dependent electrosynthesis of PEDOT:PSS: enhanced Na+ transfer targeting high-performance Na-ion batteries. Electrochimica Acta, Volume 518, April 2025, Article number 145760
dc.identifier.eissn1873-3859
dc.identifier.elementsID564690
dc.identifier.issn0013-4686
dc.identifier.paperNo145760
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2025.145760
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23638
dc.identifier.volumeNo518
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0013468625001239?via%3Dihub
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPEDOT:PSS
dc.subjectTemperature-dependent electrosynthesis
dc.subjectPseudocationic doping
dc.subjectNa-ion exchange polymer
dc.subject3403 Macromolecular and Materials Chemistry
dc.subject34 Chemical Sciences
dc.subject3406 Physical Chemistry
dc.subject40 Engineering
dc.subject4016 Materials Engineering
dc.subjectEnergy
dc.subject51 Physical sciences
dc.titleTemperature-dependent electrosynthesis of PEDOT:PSS: enhanced Na+ transfer targeting high-performance Na-ion batteries
dc.typeArticle
dc.type.subtypeJournal Article
dcterms.dateAccepted2025-01-27

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Temperature-dependent_electrosynthesis-2025.pdf
Size:
10.7 MB
Format:
Adobe Portable Document Format
Description:
Published version
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Plain Text
Description:
Download

Collections

Staff publications (SWEE)