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dc.contributor.authorWiedenmann, Daniel-
dc.contributor.authorKeller, Lukas-
dc.contributor.authorHolzer, Lorenz-
dc.contributor.authorStojadinović, Jelena-
dc.contributor.authorMünch, Beat-
dc.contributor.authorSuarez, Laura-
dc.contributor.authorFumey, Benjamin-
dc.contributor.authorHagendorfer, Harald-
dc.contributor.authorBrönnimann, Rolf-
dc.contributor.authorModregger, Peter-
dc.contributor.authorGorbar, Michal-
dc.contributor.authorVogt, Ulrich F.-
dc.contributor.authorZüttel, Andreas-
dc.contributor.authorLa Mantia, Fabio-
dc.contributor.authorWepf, Roger-
dc.contributor.authorGrobéty, Bernard-
dc.date.accessioned2018-01-25T10:37:56Z-
dc.date.available2018-01-25T10:37:56Z-
dc.date.issued2013-
dc.identifier.issn1547-5905de_CH
dc.identifier.issn0001-1541de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/2188-
dc.description.abstractThe ion conductivity of two series of porous ceramic diaphragms impregnated with caustic potash was investigated by electrochemical impedance spectroscopy. To understand the impact of the pore structure on ion conductivity, the three-dimensional (3-D) pore geometry of the diaphragms was characterized with synchrotron x-ray absorption tomography. Ion migration was calculated based on an extended pore structure model, which includes the electrolyte conductivity and geometric pore parameters, for example, tortuosity (τ) and constriction factor (β), but no fitting parameters. The calculated ion conductivities are in agreement with the data obtained from electrochemical measurements on the diaphragms. The geometric tortuosity was found to be nearly independent of porosity. Pore path constrictions diminish with increasing porosity. The lower constrictivity provides more pore space that can effectively be used for mass transport. Direct measurements from tomographs of tortuosity and constrictivity opens new possibilities to study pore structures and transport properties of porous materials.de_CH
dc.language.isoende_CH
dc.publisherWileyde_CH
dc.relation.ispartofAIChE Journalde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectMapde_CH
dc.subjectSOFCde_CH
dc.subject.ddc540: Chemiede_CH
dc.subject.ddc620.11: Werkstoffede_CH
dc.titleThree-dimensional pore structure and ion conductivity of porous ceramic diaphragmsde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
dc.identifier.doi10.1002/aic.14094de_CH
zhaw.funding.euNode_CH
zhaw.issue5de_CH
zhaw.originated.zhawYesde_CH
zhaw.pages.end1457de_CH
zhaw.pages.start1446de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume59de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
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Wiedenmann, D., Keller, L., Holzer, L., Stojadinović, J., Münch, B., Suarez, L., Fumey, B., Hagendorfer, H., Brönnimann, R., Modregger, P., Gorbar, M., Vogt, U. F., Züttel, A., La Mantia, F., Wepf, R., & Grobéty, B. (2013). Three-dimensional pore structure and ion conductivity of porous ceramic diaphragms. AIChE Journal, 59(5), 1446–1457. https://doi.org/10.1002/aic.14094
Wiedenmann, D. et al. (2013) ‘Three-dimensional pore structure and ion conductivity of porous ceramic diaphragms’, AIChE Journal, 59(5), pp. 1446–1457. Available at: https://doi.org/10.1002/aic.14094.
D. Wiedenmann et al., “Three-dimensional pore structure and ion conductivity of porous ceramic diaphragms,” AIChE Journal, vol. 59, no. 5, pp. 1446–1457, 2013, doi: 10.1002/aic.14094.
WIEDENMANN, Daniel, Lukas KELLER, Lorenz HOLZER, Jelena STOJADINOVIĆ, Beat MÜNCH, Laura SUAREZ, Benjamin FUMEY, Harald HAGENDORFER, Rolf BRÖNNIMANN, Peter MODREGGER, Michal GORBAR, Ulrich F. VOGT, Andreas ZÜTTEL, Fabio LA MANTIA, Roger WEPF und Bernard GROBÉTY, 2013. Three-dimensional pore structure and ion conductivity of porous ceramic diaphragms. AIChE Journal. 2013. Bd. 59, Nr. 5, S. 1446–1457. DOI 10.1002/aic.14094
Wiedenmann, Daniel, Lukas Keller, Lorenz Holzer, Jelena Stojadinović, Beat Münch, Laura Suarez, Benjamin Fumey, et al. 2013. “Three-Dimensional Pore Structure and Ion Conductivity of Porous Ceramic Diaphragms.” AIChE Journal 59 (5): 1446–57. https://doi.org/10.1002/aic.14094.
Wiedenmann, Daniel, et al. “Three-Dimensional Pore Structure and Ion Conductivity of Porous Ceramic Diaphragms.” AIChE Journal, vol. 59, no. 5, 2013, pp. 1446–57, https://doi.org/10.1002/aic.14094.


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