A polarization model for a solid oxide fuel cell with a mixed ionic and electronic conductor as electrolyte

Shuanglin Shen, Yupeng Yang, Liejin Guo, Hongtan Liu

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

A polarization model for a solid oxide fuel cell (SOFC) with a mixed ionic and electronic conductor (MIEC) electrolyte is developed based on charge transport equation and a constant ionic conductivity assumption. The electrochemical reaction at the electrode is described by the Butler-Volmer equation and the energy conservation equation is included as an additional condition to complete the model. The modeling results agree well with experimental data. Utilizing this model the effects of key parameters, including conductivities of electrolyte, electrolyte thickness and cathode exchange current density on the performance of the SOFC are analyzed. The distribution of oxygen partial pressure in the electrolyte is also obtained.

Original languageEnglish (US)
Pages (from-to)43-51
Number of pages9
JournalJournal of Power Sources
Volume256
DOIs
StatePublished - Jun 15 2014

Keywords

  • Leakage current
  • Mixed ionic and electronic conductor
  • Polarization model
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

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