3D thermo-electro-chemo-mechanical coupled modeling of solid oxide fuel cell with double-sided cathodes

Congying Jiang, Yuchen Gu, Wanbing Guan, Jiahong Zheng, Meng Ni, Zheng Zhong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

A solid oxide fuel cell based on double-sided cathodes is developed in our group, showing special properties and many advantages under some harsh conditions. To optimize the cell further, a thermo-electro-chemo-mechanical coupled 3D model is developed to simulate the distributions of temperature, current density, fuel gas and thermal stress under different voltages. The numerical results indicate that the temperature distribution, current, fuel gases and thermal stress is non-uniform in the cell at different voltages. The distribution of thermal stress in the electrolyte is also non-uniform because of the un-even electrochemical reaction and convective heat transfer. Furthermore, the result shows that about 47%~54% of maximum 1st principal stress in SOFC is caused by the mismatch of coefficients of thermal expansion (CTEs) among materials, while the other part of the maximum 1st principal stress is mainly caused by temperature gradient.

Original languageEnglish
Pages (from-to)904-915
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume45
Issue number1
DOIs
Publication statusPublished - 1 Jan 2020

Keywords

  • 1st principal stress
  • Multi-physics model
  • Solid oxide fuel cell (SOFC)
  • Temperature gradient
  • Thermal stress

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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