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

doi:10.1115/1.3117608

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

Hydrogen Utilization Engineering

Research output: Contribution to journal › Article › peer-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 (La_0.8Sr₀₂) _0.98MnO₃ surface, which is assumed to be the reason for a large voltage drop.

Original language	English
Pages (from-to)	210111-210116
Number of pages	6
Journal	Journal of Fuel Cell Science and Technology
Volume	7
Issue number	2
DOIs	https://doi.org/10.1115/1.3117608
Publication status	Published - 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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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.",

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T1 - Degradation of solid oxide fuel cell cathodes accelerated at a high water vapor concentration

AU - Kim, S. H.

AU - Shim, K. B.

AU - Kim, C. S.

AU - Chou, J. T.

AU - Oshima, T.

AU - Shiratori, Yusuke

AU - Ito, Kohei

AU - Sasaki, Kazunari

PY - 2010/4/1

Y1 - 2010/4/1

N2 - 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.

AB - 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.

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