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An ionic thermoelectric ratchet effect in polymeric electrolytes

hal.structure.identifierLinköping University [LIU]
dc.contributor.authorSULTANA, A.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorWÜRGER, A.
hal.structure.identifierLinköping University [LIU]
dc.contributor.authorPHOPASE, J.
hal.structure.identifierLinköping University [LIU]
dc.contributor.authorCRISPIN, X.
hal.structure.identifierLinköping University [LIU]
dc.contributor.authorZHAO, D.
dc.date.issued2022
dc.identifier.issn2050-7526
dc.description.abstractEnIonic thermoelectric materials can generate extraordinarily high thermal voltage under small temperature differences due to their orders of magnitude larger Seebeck coefficient than that of electronic materials. Together with their low-cost, environmentally friendly compositions and solution processability, electrolytes have brought renewed prosperity in thermoelectric fields. Despite the rapid growing number of good-performance materials, yet to be implemented in devices, the main challenge is the understanding of the mechanism of the large Seebeck coefficient in practical electrolytes. Here, we show that the ion/polymer interaction in PEG based electrolytes does not only affect the mobility of the ions, but also has a great impact on the Seebeck coefficient. By delicately varying the types of solvent and the concentration of the solute, we could tune the molar conductivity of the electrolytes and correlate with the Seebeck coefficient. The linear relation between the Seebeck coefficient and the logarithm of the molar conductivity is in agreement with the recently reported thermoelectric ratchet effect in ions with hopping dynamics. This could lead to new design rules for ionic thermoelectrics.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.title.enAn ionic thermoelectric ratchet effect in polymeric electrolytes
dc.typeArticle de revue
dc.identifier.doi10.1039/D2TC01130A
dc.subject.halChimie/Polymères
bordeaux.journalJournal of Materials Chemistry C
bordeaux.page13922
bordeaux.volume10
bordeaux.peerReviewedoui
hal.identifierhal-03705158
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03705158v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Materials%20Chemistry%20C&rft.date=2022&rft.volume=10&rft.spage=13922&rft.epage=13922&rft.eissn=2050-7526&rft.issn=2050-7526&rft.au=SULTANA,%20A.&W%C3%9CRGER,%20A.&PHOPASE,%20J.&CRISPIN,%20X.&ZHAO,%20D.&rft.genre=article


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