The effect of interconnect rib size on the fuel cell concentration polarization in planar SOFCs

Zijing Lin, J. W. Stevenson, M. A. Khaleel

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

The gas transport in the porous electrode is treated by a phenomenological approach such that the gas concentration at the three-phase boundary (TPB) region is the additive superposition of that transported from the source, i.e. the gas channels. With plausible approximations and elemental algebra, analytical expressions are obtained to estimate the effects of ribs on the concentration polarization of planar fuel cell operations. It is shown that the model can closely reproduce the experimental concentration polarization curve for small and medium current density (up to about 2A/cm2), providing a simple and effective method for engineering application. The concentration polarization caused by the presence of a rib is discussed and the concentration profiles with varying rib widths are illustrated. In connection with the electrical resistance, the determination of the optimal rib width for minimizing the overall polarization is also shown.

Original languageEnglish
Pages (from-to)92-97
Number of pages6
JournalJournal of Power Sources
Volume117
Issue number1-2
DOIs
Publication statusPublished - 15 May 2003
Externally publishedYes

Fingerprint

Solid oxide fuel cells (SOFC)
fuel cells
Fuel cells
Polarization
Gases
polarization
Acoustic impedance
Phase boundaries
gas transport
Algebra
electrical resistance
Current density
gases
algebra
Electrodes
engineering
current density
electrodes
curves
estimates

Keywords

  • Analytical model
  • Concentration polarization
  • Fuel cell
  • Gas transport
  • Rib design

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

The effect of interconnect rib size on the fuel cell concentration polarization in planar SOFCs. / Lin, Zijing; Stevenson, J. W.; Khaleel, M. A.

In: Journal of Power Sources, Vol. 117, No. 1-2, 15.05.2003, p. 92-97.

Research output: Contribution to journalArticle

Lin, Zijing ; Stevenson, J. W. ; Khaleel, M. A. / The effect of interconnect rib size on the fuel cell concentration polarization in planar SOFCs. In: Journal of Power Sources. 2003 ; Vol. 117, No. 1-2. pp. 92-97.
@article{96bebc2589534dac89373e5b51b4266e,
title = "The effect of interconnect rib size on the fuel cell concentration polarization in planar SOFCs",
abstract = "The gas transport in the porous electrode is treated by a phenomenological approach such that the gas concentration at the three-phase boundary (TPB) region is the additive superposition of that transported from the source, i.e. the gas channels. With plausible approximations and elemental algebra, analytical expressions are obtained to estimate the effects of ribs on the concentration polarization of planar fuel cell operations. It is shown that the model can closely reproduce the experimental concentration polarization curve for small and medium current density (up to about 2A/cm2), providing a simple and effective method for engineering application. The concentration polarization caused by the presence of a rib is discussed and the concentration profiles with varying rib widths are illustrated. In connection with the electrical resistance, the determination of the optimal rib width for minimizing the overall polarization is also shown.",
keywords = "Analytical model, Concentration polarization, Fuel cell, Gas transport, Rib design",
author = "Zijing Lin and Stevenson, {J. W.} and Khaleel, {M. A.}",
year = "2003",
month = "5",
day = "15",
doi = "10.1016/S0378-7753(02)00726-7",
language = "English",
volume = "117",
pages = "92--97",
journal = "Journal of Power Sources",
issn = "0378-7753",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - The effect of interconnect rib size on the fuel cell concentration polarization in planar SOFCs

AU - Lin, Zijing

AU - Stevenson, J. W.

AU - Khaleel, M. A.

PY - 2003/5/15

Y1 - 2003/5/15

N2 - The gas transport in the porous electrode is treated by a phenomenological approach such that the gas concentration at the three-phase boundary (TPB) region is the additive superposition of that transported from the source, i.e. the gas channels. With plausible approximations and elemental algebra, analytical expressions are obtained to estimate the effects of ribs on the concentration polarization of planar fuel cell operations. It is shown that the model can closely reproduce the experimental concentration polarization curve for small and medium current density (up to about 2A/cm2), providing a simple and effective method for engineering application. The concentration polarization caused by the presence of a rib is discussed and the concentration profiles with varying rib widths are illustrated. In connection with the electrical resistance, the determination of the optimal rib width for minimizing the overall polarization is also shown.

AB - The gas transport in the porous electrode is treated by a phenomenological approach such that the gas concentration at the three-phase boundary (TPB) region is the additive superposition of that transported from the source, i.e. the gas channels. With plausible approximations and elemental algebra, analytical expressions are obtained to estimate the effects of ribs on the concentration polarization of planar fuel cell operations. It is shown that the model can closely reproduce the experimental concentration polarization curve for small and medium current density (up to about 2A/cm2), providing a simple and effective method for engineering application. The concentration polarization caused by the presence of a rib is discussed and the concentration profiles with varying rib widths are illustrated. In connection with the electrical resistance, the determination of the optimal rib width for minimizing the overall polarization is also shown.

KW - Analytical model

KW - Concentration polarization

KW - Fuel cell

KW - Gas transport

KW - Rib design

UR - http://www.scopus.com/inward/record.url?scp=0037879209&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037879209&partnerID=8YFLogxK

U2 - 10.1016/S0378-7753(02)00726-7

DO - 10.1016/S0378-7753(02)00726-7

M3 - Article

AN - SCOPUS:0037879209

VL - 117

SP - 92

EP - 97

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 1-2

ER -