Please use this identifier to cite or link to this item: https://doi.org/10.15480/882.3161
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dc.contributor.authorLakner, Pirmin H.-
dc.contributor.authorBrinker, Manuel-
dc.contributor.authorSeitz, Christoph-
dc.contributor.authorJacobse, Leon-
dc.contributor.authorVonk, Vedran-
dc.contributor.authorLippmann, Milena-
dc.contributor.authorVolkov, S. A.-
dc.contributor.authorHuber, Patrick-
dc.contributor.authorKeller, Thomas F.-
dc.date.accessioned2020-12-08T09:32:38Z-
dc.date.available2020-12-08T09:32:38Z-
dc.date.issued2020-11-17-
dc.identifier.citationLangmuir : the ACS journal of surfaces and colloids 45 (36): 13448-13456 (2020-11-17)de_DE
dc.identifier.issn0743-7463de_DE
dc.identifier.urihttp://hdl.handle.net/11420/8080-
dc.description.abstractThis study reports on the potential-induced charge and mass transfer between an ultrathin polypyrrole (PPy) film and an electrolyte by simultaneous in situ X-ray reflectivity (XRR) and electrochemistry (EC) utilizing their sensitivity to electrons. An about 30 nm thin PPy film was deposited on a silicon single crystal by fast potential cycling, providing a dense film of an extraordinary small surface roughness. XRR was recorded from the PPy film in an aqueous 0.1 M perchloric acid at electric potentials between -0.2 V and +0.5 V vs Ag/AgCl. The PPy film shows typical reversible and linear changes in film thickness and electron density arising from the potential-dependent electrolyte incorporation. By introducing EC-XRR, a comprehensive analysis combining in situ XRR and EC, the net number of electrons passing through the PPy-electrolyte interface was deduced along with the potential-induced thickness variations, indicating a complex exchange mechanism. Evidently, along with the anion transfer, parallel charge compensation by protons and a volume and electron compensating counterflow of solvent molecules take place. Complementary time-dependent EC-XRR scans indicate that these exchange mechanisms are individual in two potential ranges. The low actuation along with a high pseudocapacitance suggest the fast potentiodynamically deposited PPy film as a promising supercapacitor material.en
dc.language.isoende_DE
dc.relation.ispartofLangmuir : the ACS journal of surfaces and colloidsde_DE
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/de_DE
dc.subject.ddc530: Physikde_DE
dc.subject.ddc600: Technikde_DE
dc.titleProbing the electrolyte transfer in ultrathin polypyrrole films by In situ X-ray reflectivity and electrochemistryde_DE
dc.typeArticlede_DE
dc.identifier.doi10.15480/882.3161-
dc.type.diniarticle-
dcterms.DCMITypeText-
tuhh.identifier.urnurn:nbn:de:gbv:830-882.0115941-
tuhh.oai.showtruede_DE
tuhh.abstract.englishThis study reports on the potential-induced charge and mass transfer between an ultrathin polypyrrole (PPy) film and an electrolyte by simultaneous in situ X-ray reflectivity (XRR) and electrochemistry (EC) utilizing their sensitivity to electrons. An about 30 nm thin PPy film was deposited on a silicon single crystal by fast potential cycling, providing a dense film of an extraordinary small surface roughness. XRR was recorded from the PPy film in an aqueous 0.1 M perchloric acid at electric potentials between -0.2 V and +0.5 V vs Ag/AgCl. The PPy film shows typical reversible and linear changes in film thickness and electron density arising from the potential-dependent electrolyte incorporation. By introducing EC-XRR, a comprehensive analysis combining in situ XRR and EC, the net number of electrons passing through the PPy-electrolyte interface was deduced along with the potential-induced thickness variations, indicating a complex exchange mechanism. Evidently, along with the anion transfer, parallel charge compensation by protons and a volume and electron compensating counterflow of solvent molecules take place. Complementary time-dependent EC-XRR scans indicate that these exchange mechanisms are individual in two potential ranges. The low actuation along with a high pseudocapacitance suggest the fast potentiodynamically deposited PPy film as a promising supercapacitor material.de_DE
tuhh.publisher.doi10.1021/acs.langmuir.0c02068-
tuhh.publication.instituteWerkstoffphysik und -technologie M-22de_DE
tuhh.publication.instituteCenter for Integrated Multiscale Material Systems M-2de_DE
tuhh.identifier.doi10.15480/882.3161-
tuhh.type.opus(wissenschaftlicher) Artikel-
dc.type.driverarticle-
dc.type.casraiJournal Article-
tuhh.container.issue45de_DE
tuhh.container.volume36de_DE
tuhh.container.startpage13448de_DE
tuhh.container.endpage13456de_DE
dc.relation.projectSFB 986: Teilprojekt B7 - Polymere in grenzflächenbestimmten Geometrien: Struktur, Dynamik und Funktion an planaren und in porösen Hybridsystemende_DE
dc.identifier.pmid33151688de_DE
dc.rights.nationallicensefalsede_DE
dc.identifier.scopus2-s2.0-85096347834de_DE
local.status.inpressfalsede_DE
local.type.versionpublishedVersionde_DE
item.creatorOrcidLakner, Pirmin H.-
item.creatorOrcidBrinker, Manuel-
item.creatorOrcidSeitz, Christoph-
item.creatorOrcidJacobse, Leon-
item.creatorOrcidVonk, Vedran-
item.creatorOrcidLippmann, Milena-
item.creatorOrcidVolkov, S. A.-
item.creatorOrcidHuber, Patrick-
item.creatorOrcidKeller, Thomas F.-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.fulltextWith Fulltext-
item.mappedtypeArticle-
item.creatorGNDLakner, Pirmin H.-
item.creatorGNDBrinker, Manuel-
item.creatorGNDSeitz, Christoph-
item.creatorGNDJacobse, Leon-
item.creatorGNDVonk, Vedran-
item.creatorGNDLippmann, Milena-
item.creatorGNDVolkov, S. A.-
item.creatorGNDHuber, Patrick-
item.creatorGNDKeller, Thomas F.-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.project.funderDeutsche Forschungsgemeinschaft (DFG)-
crisitem.project.funderid501100001659-
crisitem.project.funderrorid018mejw64-
crisitem.project.grantno192346071-
crisitem.author.deptMaterial- und Röntgenphysik M-2-
crisitem.author.deptMaterial- und Röntgenphysik M-2-
crisitem.author.orcid0000-0002-2422-0433-
crisitem.author.orcid0000-0002-1729-459X-
crisitem.author.orcid0000-0001-9854-1101-
crisitem.author.orcid0000-0001-5598-6899-
crisitem.author.orcid0000-0002-2126-9100-
crisitem.author.orcid0000-0002-3770-6344-
crisitem.author.parentorgStudiendekanat Maschinenbau-
crisitem.author.parentorgStudiendekanat Maschinenbau-
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