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Article: Meniscus behavior and oxygen reduction in tapered pore gas diffusion electrodes

TitleMeniscus behavior and oxygen reduction in tapered pore gas diffusion electrodes
Authors
Issue Date1988
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electacta
Citation
Electrochimica Acta, 1988, v. 33 n. 12, p. 1767-1773 How to Cite?
AbstractThe electrochemical reduction of oxygen in 0.88 M KOH at 25°C was studied using two silver plated copper electrodes that contained uniform, parallel, tapered pores. Photolithography, etching, and plating techniques were used to fabricate these electrodes. Exchange current densities of 2 × 10-5 A cm-2 and 2 × 10-6 A cm-2 were measured using an initial slope method. Diffusion limiting currents increased with differential pressure across the gas-electrolyte interface which suggests smaller contact angles at higher pressures. A wedge meniscus model that treats activation, ohmic, and concentration overpotential was applied to fit the polarization curves. © 1988.
Persistent Identifierhttp://hdl.handle.net/10722/167885
ISSN
2015 Impact Factor: 4.803
2015 SCImago Journal Rankings: 1.391
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChan, KYen_US
dc.contributor.authorCocchetto, JFen_US
dc.contributor.authorEfthymiou, GSen_US
dc.date.accessioned2012-10-08T03:12:31Z-
dc.date.available2012-10-08T03:12:31Z-
dc.date.issued1988en_US
dc.identifier.citationElectrochimica Acta, 1988, v. 33 n. 12, p. 1767-1773en_US
dc.identifier.issn0013-4686en_US
dc.identifier.urihttp://hdl.handle.net/10722/167885-
dc.description.abstractThe electrochemical reduction of oxygen in 0.88 M KOH at 25°C was studied using two silver plated copper electrodes that contained uniform, parallel, tapered pores. Photolithography, etching, and plating techniques were used to fabricate these electrodes. Exchange current densities of 2 × 10-5 A cm-2 and 2 × 10-6 A cm-2 were measured using an initial slope method. Diffusion limiting currents increased with differential pressure across the gas-electrolyte interface which suggests smaller contact angles at higher pressures. A wedge meniscus model that treats activation, ohmic, and concentration overpotential was applied to fit the polarization curves. © 1988.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/electactaen_US
dc.relation.ispartofElectrochimica Actaen_US
dc.titleMeniscus behavior and oxygen reduction in tapered pore gas diffusion electrodesen_US
dc.typeArticleen_US
dc.identifier.emailChan, KY:hrsccky@hku.hken_US
dc.identifier.authorityChan, KY=rp00662en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/0013-4686(88)85012-6-
dc.identifier.scopuseid_2-s2.0-1242307657en_US
dc.identifier.volume33en_US
dc.identifier.issue12en_US
dc.identifier.spage1767en_US
dc.identifier.epage1773en_US
dc.identifier.isiWOS:A1988R441400010-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChan, KY=7406034142en_US
dc.identifier.scopusauthoridCocchetto, JF=6506669149en_US
dc.identifier.scopusauthoridEfthymiou, GS=6602937018en_US

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