Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/11986
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dc.contributor.authorCihanoğlu, Gizemen_US
dc.contributor.authorEbil, Özgençen_US
dc.date.accessioned2022-03-09T08:42:04Z-
dc.date.available2022-03-09T08:42:04Z-
dc.date.issued2022-02-04-
dc.identifier.urihttps://hdl.handle.net/11147/11986-
dc.identifier.urihttps://doi.org/10.1021/acs.iecr.1c04244-
dc.description.abstractCopolymer thin films of 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane (V4D4), 2-(perfluorohexylethylacrylate) (PFHEA), and 2-(perfluoroalkylethylmethacrylate) (PFEMA) were synthesized via initiated chemical vapor deposition (iCVD) as potential candidates for gas diffusion layers (GDLs) in gas diffusion electrodes (GDEs) for aqueous metal–air batteries. Thin-film GDLs exhibited an average water vapor transmission rate of 7.5 g m–2 day–1 and enhanced oxygen diffusion with oxygen permeabilities as high as 3.53 × 10–15 mol m m–2 s–1 Pa–1 (10.5 Barrer). The electrochemical performance of GDEs fabricated using commercial catalysts, current collectors, and synthesized GDLs was investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and potentiodynamic polarization measurements. The fabricated GDEs exhibited higher oxygen reduction current densities (228.2 mA cm–2) compared to commercial GDEs (132.7 mA cm–2). Copolymer GLDs exhibited an order of magnitude higher oxygen diffusion (39.5 × 10–8 cm2 s–1) in GDEs compared to commercial counterparts (1.84 × 10–8 cm2 s–1). Due to the high oxygen solubility of V4D4 and excellent hydrophobic behavior of PFHEA and PFEMA, their copolymers can effectively promote the diffusion of oxygen and restrict moisture intake, making them ideal materials for GDLs. Combining well-balanced properties of siloxane and fluorinated polymer chemistries, the iCVD process is an excellent low-cost method for the fabrication of GDLs for metal–air battery applications.en_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDiffusionen_US
dc.subjectCopolymersen_US
dc.subjectOxygenen_US
dc.subjectBatteriesen_US
dc.subjectPermeabilityen_US
dc.titleCVD-Deposited oxygen-selective fluorinated siloxane copolymers as gas diffusion layersen_US
dc.typeArticleen_US
dc.authorid0000-0002-1524-7634en_US
dc.authorid0000-0002-7458-4219en_US
dc.institutionauthorCihanoğlu, Gizemen_US
dc.institutionauthorEbil, Özgençen_US
dc.departmentİzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.wosWOS:000763116000023en_US
dc.identifier.scopus2-s2.0-85124523275en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1021/acs.iecr.1c04244-
dc.identifier.urlhttps://pubs.acs.org/doi/10.1021/acs.iecr.1c04244-
dc.contributor.affiliationIzmir Institute of Technologyen_US
dc.contributor.affiliationIzmir Institute of Technologyen_US
dc.relation.issn1520-5045en_US
dc.description.volume61en_US
dc.description.issue6en_US
dc.description.startpage2633en_US
dc.description.endpage2642en_US
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
crisitem.author.dept01. Izmir Institute of Technology-
crisitem.author.dept03.02. Department of Chemical Engineering-
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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