Influence of water vapor on long-term performance and accelerated degradation of solid oxide fuel cell cathodes

R. R. Liu, S. H. Kim, Shunsuke Taniguchi, T. Oshima, Yusuke Shiratori, Kohei Ito, Kazunari Sasaki

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

The influence of water vapor in the air on the performance and durability of solid oxide fuel cell (SOFC) has been investigated for the-state-of-the-art cathodes, (La0.8Sr0.2)0.98MnO3 (LSM) and La0.6Sr0.4Co0.2Fe0.8O 3 (LSCF). Durability experiments were carried out at 800 °C up to 1000 h with various water vapor containing-air fed to the cathode side. Both types of cathode materials were basically stable under typical water vapor concentrations in the ambient air. Degradations could be accelerated at much higher water vapor concentrations, which could be associated with the decomposition of the cathode materials. Temperature dependence of this degradation was analyzed between 700 °C and 900 °C under 10 vol% water vapor concentration, which showed that the effect of water vapor depends strongly on the temperature and led to a severe degradation at 700 °C within a short time period for both cathode materials.

Original languageEnglish
Pages (from-to)7090-7096
Number of pages7
JournalJournal of Power Sources
Volume196
Issue number17
DOIs
Publication statusPublished - Sep 1 2011

Fingerprint

cell cathodes
Steam
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Water vapor
water vapor
Cathodes
degradation
Degradation
cathodes
durability
air
Durability
Air
Decomposition
decomposition
Temperature
temperature dependence

All Science Journal Classification (ASJC) codes

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

Cite this

Influence of water vapor on long-term performance and accelerated degradation of solid oxide fuel cell cathodes. / Liu, R. R.; Kim, S. H.; Taniguchi, Shunsuke; Oshima, T.; Shiratori, Yusuke; Ito, Kohei; Sasaki, Kazunari.

In: Journal of Power Sources, Vol. 196, No. 17, 01.09.2011, p. 7090-7096.

Research output: Contribution to journalArticle

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