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Mass transport in molten alkali carbonate mixtures
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology.ORCID iD: 0000-0001-9203-9313
2006 (English)In: Proc. Electrochem. Soc., 2006, 151-161 p.Conference paper, Published paper (Refereed)
Abstract [en]

A one-dimensional model based on Stefan-Maxwell theory of mass transfer was used to calculate the composition changes of the electrolyte in MCFC. Stefan-Maxwell diffusivities were calculated from conductivity and transport number data and used in the model. The composition changes calculated agreed with experimental results for lithium-potassium carbonate but less for lithium-sodium. The time dependent change of composition was also calculated but this could not explain the difference. In addition, the influence of the porosity of the fuel cell components, together with the electrolyte filling degree, was calculated and this showed a large influence on the composition change.

Place, publisher, year, edition, pages
2006. 151-161 p.
Series
Proceedings - Electrochemical Society, PV 2004-24
Keyword [en]
Electric conductivity, Electrolytes, Mass transfer, Porosity, Alkali carbonate mixtures, Electrolyte filling, Stefan-Maxwell diffusivities, Molten carbonate fuel cells (MCFC)
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-155369Scopus ID: 2-s2.0-40249083211ISBN: 9781566775144 (print)OAI: oai:DiVA.org:kth-155369DiVA: diva2:762255
Conference
206th ECS Meeting, 3-8 October 2004, Honolulu, HI, USA
Note

QC 20141111

Available from: 2014-11-11 Created: 2014-11-05 Last updated: 2014-11-11Bibliographically approved

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Lindbergh, Göran

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