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SOFC modeling considering electrochemical reactions at the TPBs

Andersson, Martin LU ; Yuan, Jinliang LU and Sundén, Bengt LU (2011) International Conference on Power And Energy Engineering (CPEE2011/CET2011)
Abstract
Fuel cells are electrochemical devices that directly transform chemical energy into electricity, which are promising for future energy systems, because they are energy efficient. The cell performance depends strongly on the material characteristics, the operating conditions and the chemical reactions that occur at active sites. The steam reforming and electrochemical reaction rates depend on temperature, material structure, catalytic activity, degradation and the partial pressures of the different species components. In this study the governing equations of heat-, mass-, ionic-, electronic- and momentum transport are solved together with kinetic expressions for electrochemical reactions and internal reforming reactions of hydrocarbon... (More)
Fuel cells are electrochemical devices that directly transform chemical energy into electricity, which are promising for future energy systems, because they are energy efficient. The cell performance depends strongly on the material characteristics, the operating conditions and the chemical reactions that occur at active sites. The steam reforming and electrochemical reaction rates depend on temperature, material structure, catalytic activity, degradation and the partial pressures of the different species components. In this study the governing equations of heat-, mass-, ionic-, electronic- and momentum transport are solved together with kinetic expressions for electrochemical reactions and internal reforming reactions of hydrocarbon fuels. It is concluded that the greater part of the polarization losses occur within the anode and also that the active area available for electrochemical reactions is larger on the cathode side, compared to the anode side. A large active area means that current density gradient is steeper. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to conference
publication status
submitted
subject
keywords
SOFC, Modeling, COMSOL Multiphysics, TPB, Electrochemical reactions, Ionic transport, Electronic transport
pages
4 pages
conference name
International Conference on Power And Energy Engineering (CPEE2011/CET2011)
language
English
LU publication?
yes
id
7823bb44-2e16-4bb8-9f04-d3eacbedbaab (old id 1974549)
date added to LUP
2011-06-08 11:52:26
date last changed
2016-10-12 16:08:43
@misc{7823bb44-2e16-4bb8-9f04-d3eacbedbaab,
  abstract     = {Fuel cells are electrochemical devices that directly transform chemical energy into electricity, which are promising for future energy systems, because they are energy efficient. The cell performance depends strongly on the material characteristics, the operating conditions and the chemical reactions that occur at active sites. The steam reforming and electrochemical reaction rates depend on temperature, material structure, catalytic activity, degradation and the partial pressures of the different species components. In this study the governing equations of heat-, mass-, ionic-, electronic- and momentum transport are solved together with kinetic expressions for electrochemical reactions and internal reforming reactions of hydrocarbon fuels. It is concluded that the greater part of the polarization losses occur within the anode and also that the active area available for electrochemical reactions is larger on the cathode side, compared to the anode side. A large active area means that current density gradient is steeper.},
  author       = {Andersson, Martin and Yuan, Jinliang and Sundén, Bengt},
  keyword      = {SOFC,Modeling,COMSOL Multiphysics,TPB,Electrochemical reactions,Ionic transport,Electronic transport},
  language     = {eng},
  pages        = {4},
  title        = {SOFC modeling considering electrochemical reactions at the TPBs},
  year         = {2011},
}