Failure analysis of porous solid oxide fuel cells by using peridynamics

Hanlin Wang; Erkan Oterkus

Abstract

Solid oxide fuel cell (SOFC) is widely used in hybrid marine propulsion systems due to its high power output, excellent emission control and wide fuel suitability. However, the redox reaction of hydrogen and oxygen ions generates large amount of heat which increases the operation temperature of SOFC to 800 − 1000℃. Under such operation temperature, the delamination and degradation may occur in the electrodes and electrolyte. As a result, unstable voltage, low capacity and cell failure may eventually occur.

Hence, this study presents failure analysis of a porous SOFC cell plate which contains electrodes, electrolytes and pores. A microscale specimen of the plate is selected in order to maintain uniform thermal loading and increase the accuracy of estimation. A new computational technique, peridynamics, is utilized to calculate the deformations and stresses of the cell plate. Moreover, the crack formation and propagation are also obtained by using peridynamics.

Original language	English
Number of pages	1
Publication status	Published - 7 Nov 2017
Event	ASME 2017 International Mechanical Engineering Congress & Exposition - Tampa, United States Duration: 3 Nov 2017 → 9 Nov 2017

Conference

Conference	ASME 2017 International Mechanical Engineering Congress & Exposition
Country/Territory	United States
City	Tampa
Period	3/11/17 → 9/11/17

Keywords

solid oxide fuel cell (SOFC)
hybrid marine propulsion systems
porous cell plate

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Cite this

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title = "Failure analysis of porous solid oxide fuel cells by using peridynamics",

abstract = "Solid oxide fuel cell (SOFC) is widely used in hybrid marine propulsion systems due to its high power output, excellent emission control and wide fuel suitability. However, the redox reaction of hydrogen and oxygen ions generates large amount of heat which increases the operation temperature of SOFC to 800 − 1000℃. Under such operation temperature, the delamination and degradation may occur in the electrodes and electrolyte. As a result, unstable voltage, low capacity and cell failure may eventually occur.Hence, this study presents failure analysis of a porous SOFC cell plate which contains electrodes, electrolytes and pores. A microscale specimen of the plate is selected in order to maintain uniform thermal loading and increase the accuracy of estimation. A new computational technique, peridynamics, is utilized to calculate the deformations and stresses of the cell plate. Moreover, the crack formation and propagation are also obtained by using peridynamics.",

keywords = "solid oxide fuel cell (SOFC), hybrid marine propulsion systems, porous cell plate",

author = "Hanlin Wang and Erkan Oterkus",

year = "2017",

month = nov,

day = "7",

language = "English",

note = "ASME 2017 International Mechanical Engineering Congress & Exposition ; Conference date: 03-11-2017 Through 09-11-2017",

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TY - CONF

T1 - Failure analysis of porous solid oxide fuel cells by using peridynamics

AU - Wang, Hanlin

AU - Oterkus, Erkan

PY - 2017/11/7

Y1 - 2017/11/7

N2 - Solid oxide fuel cell (SOFC) is widely used in hybrid marine propulsion systems due to its high power output, excellent emission control and wide fuel suitability. However, the redox reaction of hydrogen and oxygen ions generates large amount of heat which increases the operation temperature of SOFC to 800 − 1000℃. Under such operation temperature, the delamination and degradation may occur in the electrodes and electrolyte. As a result, unstable voltage, low capacity and cell failure may eventually occur.Hence, this study presents failure analysis of a porous SOFC cell plate which contains electrodes, electrolytes and pores. A microscale specimen of the plate is selected in order to maintain uniform thermal loading and increase the accuracy of estimation. A new computational technique, peridynamics, is utilized to calculate the deformations and stresses of the cell plate. Moreover, the crack formation and propagation are also obtained by using peridynamics.

AB - Solid oxide fuel cell (SOFC) is widely used in hybrid marine propulsion systems due to its high power output, excellent emission control and wide fuel suitability. However, the redox reaction of hydrogen and oxygen ions generates large amount of heat which increases the operation temperature of SOFC to 800 − 1000℃. Under such operation temperature, the delamination and degradation may occur in the electrodes and electrolyte. As a result, unstable voltage, low capacity and cell failure may eventually occur.Hence, this study presents failure analysis of a porous SOFC cell plate which contains electrodes, electrolytes and pores. A microscale specimen of the plate is selected in order to maintain uniform thermal loading and increase the accuracy of estimation. A new computational technique, peridynamics, is utilized to calculate the deformations and stresses of the cell plate. Moreover, the crack formation and propagation are also obtained by using peridynamics.

KW - solid oxide fuel cell (SOFC)

KW - hybrid marine propulsion systems

KW - porous cell plate

M3 - Abstract

T2 - ASME 2017 International Mechanical Engineering Congress & Exposition

Y2 - 3 November 2017 through 9 November 2017

ER -