Mass transport in molten alkali carbonate mixtures
2006 (English)In: Proc. Electrochem. Soc., 2006, 151-161 p.Conference paper (Refereed)
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.
, Proceedings - Electrochemical Society, PV 2004-24
Electric conductivity, Electrolytes, Mass transfer, Porosity, Alkali carbonate mixtures, Electrolyte filling, Stefan-Maxwell diffusivities, Molten carbonate fuel cells (MCFC)
IdentifiersURN: urn:nbn:se:kth:diva-155369ScopusID: 2-s2.0-40249083211ISBN: 9781566775144OAI: oai:DiVA.org:kth-155369DiVA: diva2:762255
206th ECS Meeting, 3-8 October 2004, Honolulu, HI, USA
QC 201411112014-11-112014-11-052014-11-11Bibliographically approved