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Effects of different design parameters on the performance of MCFC cathodes

Fontes, Eduardo; Fontes, Magnus LU and Simonsson, Daniel (1996) In Electrochimica Acta 41(1). p.1-13
Abstract
The effects of electrode thickness, electrolyte filling and current collector geometry on the performance of MCFC cathodes are investigated by using a steady state mathematical model. A two-dimensional pseudo-homogeneous model for the three-phase system in the cathode is used, which includes the polarisation curves from the heterogeneous agglomerate model[1] as local source functions. The model takes into account the potential distribution in the electrolyte and catalyst phase but neglects mass transport limitations in the gas phase. The simulations show that, for cathodes with a finite electronic conductivity, there is a substantial potential distribution perpendicular to the depth of the electrode depending on the size of the gas holes... (More)
The effects of electrode thickness, electrolyte filling and current collector geometry on the performance of MCFC cathodes are investigated by using a steady state mathematical model. A two-dimensional pseudo-homogeneous model for the three-phase system in the cathode is used, which includes the polarisation curves from the heterogeneous agglomerate model[1] as local source functions. The model takes into account the potential distribution in the electrolyte and catalyst phase but neglects mass transport limitations in the gas phase. The simulations show that, for cathodes with a finite electronic conductivity, there is a substantial potential distribution perpendicular to the depth of the electrode depending on the size of the gas holes in the current collector. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
fuel cell, MCFC, gas diffusion electrodes, mathematical modelling, Lithium coboltite
in
Electrochimica Acta
volume
41
issue
1
pages
1 - 13
publisher
Pergamon
external identifiers
  • scopus:0029778702
ISSN
0013-4686
language
English
LU publication?
yes
id
2f26ae88-efe6-41ec-a061-335b8c553cc7 (old id 1470846)
alternative location
http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TG0-3Y0SH1X-R-2&_cdi=5240&_user=745831&_orig=search&_coverDate=01%2F31%2F1996&_sk=999589998&view=c&wchp=dGLbVlb-zSkWz&md5=e455fa871f152263115e5a2f1b46fc7b&ie=/sdarticle.pdf
date added to LUP
2009-09-17 10:55:09
date last changed
2017-01-01 04:53:29
@article{2f26ae88-efe6-41ec-a061-335b8c553cc7,
  abstract     = {The effects of electrode thickness, electrolyte filling and current collector geometry on the performance of MCFC cathodes are investigated by using a steady state mathematical model. A two-dimensional pseudo-homogeneous model for the three-phase system in the cathode is used, which includes the polarisation curves from the heterogeneous agglomerate model[1] as local source functions. The model takes into account the potential distribution in the electrolyte and catalyst phase but neglects mass transport limitations in the gas phase. The simulations show that, for cathodes with a finite electronic conductivity, there is a substantial potential distribution perpendicular to the depth of the electrode depending on the size of the gas holes in the current collector.},
  author       = {Fontes, Eduardo and Fontes, Magnus and Simonsson, Daniel},
  issn         = {0013-4686},
  keyword      = {fuel cell,MCFC,gas diffusion electrodes,mathematical modelling,Lithium coboltite},
  language     = {eng},
  number       = {1},
  pages        = {1--13},
  publisher    = {Pergamon},
  series       = {Electrochimica Acta},
  title        = {Effects of different design parameters on the performance of MCFC cathodes},
  volume       = {41},
  year         = {1996},
}