Degradation of solid oxide fuel cell cathodes accelerated at a high water vapor concentration

S. H. Kim, K. B. Shim, C. S. Kim, J. T. Chou, T. Oshima, Yusuke Shiratori, Kohei Ito, Kazunari Sasaki

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

The influence of water vapor in air on power generation characteristic of solid oxide fuel cells was analyzed by measuring cell voltage at a constant current density, as a function of water vapor concentration at 800° and 1000°. Cell voltage change was negligible at 1000°, while considerable voltage drop was observed at 800° accelerated at high water vapor concentrations of 20 wt % and 40 wt %. It is considered that La 2O3 formed on the (La0.8Sr02) 0.98MnO3 surface, which is assumed to be the reason for a large voltage drop.

Original languageEnglish
Pages (from-to)210111-210116
Number of pages6
JournalJournal of Fuel Cell Science and Technology
Volume7
Issue number2
DOIs
Publication statusPublished - Apr 1 2010

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology

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