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Solid Oxide Fuel Cell Interconnect Design Optimization considering the Thermal Stresses

Xu, Min; Li, Tingshuai; Yang, M and Andersson, Martin LU (2016) In Science Bulletin 61(17). p.1333-1344
Abstract
The mechanical failure of solid oxide fuel cell (SOFC) components may cause cracks with consequences such as gas leakage, structure instability and reduction of cell lifetime. A comprehensive 3D model of the thermal stresses of an anode-supported planar SOFC is presented in this work. The main objective of this paper is to get an interconnect optimized design by evaluating the thermal stresses of an anode-supported SOFC for different designs, which would be a new criterion for interconnect design. The model incorporates the momentum, mass, heat, ion and electron transport, as well as steady-state mechanics. Heat from methane steam reforming and water–gas shift reaction were considered in our model. The results examine the relationship... (More)
The mechanical failure of solid oxide fuel cell (SOFC) components may cause cracks with consequences such as gas leakage, structure instability and reduction of cell lifetime. A comprehensive 3D model of the thermal stresses of an anode-supported planar SOFC is presented in this work. The main objective of this paper is to get an interconnect optimized design by evaluating the thermal stresses of an anode-supported SOFC for different designs, which would be a new criterion for interconnect design. The model incorporates the momentum, mass, heat, ion and electron transport, as well as steady-state mechanics. Heat from methane steam reforming and water–gas shift reaction were considered in our model. The results examine the relationship between the interconnect structures and thermal stresses in SOFC at certain mechanical properties. A wider interconnect of the anode side lowers the stress obviously. The simulation results also indicate that thermal stress of coflow design is smaller than that of counterflow, corresponding to the temperature distribution. This study shows that it is possible to design interconnects for an optimum thermal stress performance of the cell. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Science Bulletin
volume
61
issue
17
pages
11 pages
publisher
Science China Press
external identifiers
  • Scopus:84979202513
  • WOS:000382391600005
ISSN
2095-9273
DOI
10.1007/s11434-016-1146-3
language
English
LU publication?
yes
id
88df7f9a-a2bf-494a-98a6-41d8398a962c
date added to LUP
2016-09-01 11:54:47
date last changed
2017-01-01 08:33:08
@article{88df7f9a-a2bf-494a-98a6-41d8398a962c,
  abstract     = {The mechanical failure of solid oxide fuel cell (SOFC) components may cause cracks with consequences such as gas leakage, structure instability and reduction of cell lifetime. A comprehensive 3D model of the thermal stresses of an anode-supported planar SOFC is presented in this work. The main objective of this paper is to get an interconnect optimized design by evaluating the thermal stresses of an anode-supported SOFC for different designs, which would be a new criterion for interconnect design. The model incorporates the momentum, mass, heat, ion and electron transport, as well as steady-state mechanics. Heat from methane steam reforming and water–gas shift reaction were considered in our model. The results examine the relationship between the interconnect structures and thermal stresses in SOFC at certain mechanical properties. A wider interconnect of the anode side lowers the stress obviously. The simulation results also indicate that thermal stress of coflow design is smaller than that of counterflow, corresponding to the temperature distribution. This study shows that it is possible to design interconnects for an optimum thermal stress performance of the cell.},
  author       = {Xu, Min and Li, Tingshuai and Yang, M and Andersson, Martin},
  issn         = {2095-9273},
  language     = {eng},
  number       = {17},
  pages        = {1333--1344},
  publisher    = {Science China Press},
  series       = {Science Bulletin},
  title        = {Solid Oxide Fuel Cell Interconnect Design Optimization considering the Thermal Stresses},
  url          = {http://dx.doi.org/10.1007/s11434-016-1146-3},
  volume       = {61},
  year         = {2016},
}