Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Mathematical modelling of the MCFC cathode: On the linear polarisation of the NiO cathode
KTH, Superseded Departments, Chemical Engineering and Technology.
KTH, Superseded Departments, Chemical Engineering and Technology.ORCID iD: 0000-0002-2268-5042
KTH, Superseded Departments, Chemical Engineering and Technology.
1997 (English)In: Journal of Electroanalytical Chemistry, ISSN 0022-0728, E-ISSN 1873-2569, Vol. 432, no 1-2, 121-128 p.Article in journal (Refereed) Published
Abstract [en]

Experimental polarisation curves for the porous lithiated NiO cathode used in molten carbonate fuel cells very often exhibit a linear shape over a wide potential range. It is shown by means of mathematical modelling that this linear behaviour can be explained by the interplay of intrinsic electrode kinetics, diffusion of electroactive species through an electrolyte film and the effective ohmic resistance of the pore electrolyte, providing that the cathodic transfer coefficient has a value of about 1.5. In contrast, with the generally assumed value of 0.5 of this transfer coefficient and with reasonable values of the effective electrolyte conductivity, predicted polarisation curves will always bend downwards over the overvoltage region of interest. The evolution of the polarisation curves with increasing electrolyte fill can be simulated by a model according to which the electroactive surface area becomes gradually blocked with the increasing amount of electrolyte.

Place, publisher, year, edition, pages
1997. Vol. 432, no 1-2, 121-128 p.
Keyword [en]
fuel cell, MCFC, gas diffusion electrodes, mathematical modelling, oxygen reduction, CARBONATE FUEL-CELLS, MOLTEN, REDUCTION, OXYGEN, ELECTRODE, PERFORMANCE, ANODE
Identifiers
URN: urn:nbn:se:kth:diva-12880ISI: A1997YC70200014OAI: oai:DiVA.org:kth-12880DiVA: diva2:319516
Note
QC 20100518Available from: 2010-05-18 Created: 2010-05-18 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Electrochemical performance of porous MCFC cathodes
Open this publication in new window or tab >>Electrochemical performance of porous MCFC cathodes
1997 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 1997. ix, 55 p.
Series
Trita-KET, ISSN 1104-3466
Keyword
molten carbonate fuel cell, MCFC cathode, LiCoO2, NiO, porous electrode, polarisation, performance, reaction mechanisms, conductivity
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-2473 (URN)99-2384406-4 (ISBN)
Public defence
1997-03-01, 00:00 (English)
Note
QC 20100511Available from: 2000-01-01 Created: 2000-01-01 Last updated: 2010-05-18Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Lagergren, Carina

Search in DiVA

By author/editor
Lagergren, CarinaSimonsson, Daniel
By organisation
Chemical Engineering and Technology
In the same journal
Journal of Electroanalytical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 69 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf