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Effect of bi-layer interconnector design on mass transfer performance in porous anode of solid oxide fuel cells

Chen, Qiuyang; Wang, Qiuwang; Zhang, Jian and Yuan, Jinliang LU (2011) In International Journal of Heat and Mass Transfer 54(9-10). p.1994-2003
Abstract
We propose a novel interconnector design, termed bi-layer interconnector, for solid oxide fuel cells (SOFCs). It can disturb the fuel gas and air on the planes normal to the SOFC three-phase-boundary (TPB) layer. In this paper, a two-dimensional half-cell model is developed to study the concentration overpotentials in the fuel side of the SOFC stack with conventional and novel bi-layer interconnectors. The numerical results show that the novel bi-layer interconnector can increase the velocity of the fuel gas in the porous anode. The results of mole fraction distribution illustrate that the novel bi-layer interconnector can effectively disturb the fuel flow. The average H-2 mole fraction in the porous anode of SOFC with bi-layer... (More)
We propose a novel interconnector design, termed bi-layer interconnector, for solid oxide fuel cells (SOFCs). It can disturb the fuel gas and air on the planes normal to the SOFC three-phase-boundary (TPB) layer. In this paper, a two-dimensional half-cell model is developed to study the concentration overpotentials in the fuel side of the SOFC stack with conventional and novel bi-layer interconnectors. The numerical results show that the novel bi-layer interconnector can increase the velocity of the fuel gas in the porous anode. The results of mole fraction distribution illustrate that the novel bi-layer interconnector can effectively disturb the fuel flow. The average H-2 mole fraction in the porous anode of SOFC with bi-layer interconnector is about 4.7% higher than that of conventional SOFC. The average H-2 mole fraction at TPB interface is about 9.2% higher. The concentration overpotential of the novel SOFC design is lower than that of the conventional SOFC design by 5%. It can enhance the mass transfer in porous electrode and improve the performance of SOFC. (C) 2011 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Solid oxide fuel cell, Bi-layer interconnector, Mass transfer, Concentration polarization, Half-cell model, Numerical simulation
in
International Journal of Heat and Mass Transfer
volume
54
issue
9-10
pages
1994 - 2003
publisher
Pergamon
external identifiers
  • wos:000289011700030
  • scopus:79952282787
ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2011.01.003
language
English
LU publication?
yes
id
c7911c3b-f4a4-4331-861b-81394d5338ed (old id 1925338)
date added to LUP
2011-05-11 13:33:16
date last changed
2017-07-23 03:16:14
@article{c7911c3b-f4a4-4331-861b-81394d5338ed,
  abstract     = {We propose a novel interconnector design, termed bi-layer interconnector, for solid oxide fuel cells (SOFCs). It can disturb the fuel gas and air on the planes normal to the SOFC three-phase-boundary (TPB) layer. In this paper, a two-dimensional half-cell model is developed to study the concentration overpotentials in the fuel side of the SOFC stack with conventional and novel bi-layer interconnectors. The numerical results show that the novel bi-layer interconnector can increase the velocity of the fuel gas in the porous anode. The results of mole fraction distribution illustrate that the novel bi-layer interconnector can effectively disturb the fuel flow. The average H-2 mole fraction in the porous anode of SOFC with bi-layer interconnector is about 4.7% higher than that of conventional SOFC. The average H-2 mole fraction at TPB interface is about 9.2% higher. The concentration overpotential of the novel SOFC design is lower than that of the conventional SOFC design by 5%. It can enhance the mass transfer in porous electrode and improve the performance of SOFC. (C) 2011 Elsevier Ltd. All rights reserved.},
  author       = {Chen, Qiuyang and Wang, Qiuwang and Zhang, Jian and Yuan, Jinliang},
  issn         = {0017-9310},
  keyword      = {Solid oxide fuel cell,Bi-layer interconnector,Mass transfer,Concentration polarization,Half-cell model,Numerical simulation},
  language     = {eng},
  number       = {9-10},
  pages        = {1994--2003},
  publisher    = {Pergamon},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Effect of bi-layer interconnector design on mass transfer performance in porous anode of solid oxide fuel cells},
  url          = {http://dx.doi.org/10.1016/j.ijheatmasstransfer.2011.01.003},
  volume       = {54},
  year         = {2011},
}