Degradation mechanism with impurities and life time estimation for SOFCs

T. Horita, D. H. Cho, F. Wang, M. Nishi, T. Shimonosono, H. Kishimoto, K. Yamaji, M. E. Brito, H. Yokokawa

研究成果: Conference contribution

2 引用 (Scopus)

抄録

The degradation of La 0.6Sr 0.4Co 0.2Fe 0.8O 3 (LSCF) cathode performance were investigated under relatively high pressures of impurities with Cr and S. AC impedance and DC currents were measured as a function of operation time. The cathode polarization rapidly increased when exposure to CrO 3 and SO 2 due to active sites vanishing with impurities. The distributions of Cr and S in the porous LSCF were different due to the chemical reactivity and electrochemical effects. A significant amount of SrCrO 4 was deposited at the gas inlet of cathode surface region whereas small spots of SrSO 4 were distributed inside the porous LSCF cathode. From the trends of polarization increase, the decrease trends and life time of cathodes were estimated for the availability of cathodes.

元の言語English
ホスト出版物のタイトルECS Transactions
ページ297-304
ページ数8
42
エディション1
DOI
出版物ステータスPublished - 2012
外部発表Yes
イベント2011 Fuel Cell Seminar and Exposition - Orlando, FL, United States
継続期間: 2011 10 312011 11 3

Other

Other2011 Fuel Cell Seminar and Exposition
United States
Orlando, FL
期間11/10/3111/11/3

Fingerprint

Solid oxide fuel cells (SOFC)
Cathodes
Impurities
Degradation
Polarization
Chemical reactivity
Availability
Gases

ASJC Scopus subject areas

  • Engineering(all)

これを引用

Horita, T., Cho, D. H., Wang, F., Nishi, M., Shimonosono, T., Kishimoto, H., ... Yokokawa, H. (2012). Degradation mechanism with impurities and life time estimation for SOFCs. : ECS Transactions (1 版, 巻 42, pp. 297-304) https://doi.org/10.1149/1.4705506

Degradation mechanism with impurities and life time estimation for SOFCs. / Horita, T.; Cho, D. H.; Wang, F.; Nishi, M.; Shimonosono, T.; Kishimoto, H.; Yamaji, K.; Brito, M. E.; Yokokawa, H.

ECS Transactions. 巻 42 1. 編 2012. p. 297-304.

研究成果: Conference contribution

Horita, T, Cho, DH, Wang, F, Nishi, M, Shimonosono, T, Kishimoto, H, Yamaji, K, Brito, ME & Yokokawa, H 2012, Degradation mechanism with impurities and life time estimation for SOFCs. : ECS Transactions. 1 Edn, 巻. 42, pp. 297-304, 2011 Fuel Cell Seminar and Exposition, Orlando, FL, United States, 11/10/31. https://doi.org/10.1149/1.4705506
Horita T, Cho DH, Wang F, Nishi M, Shimonosono T, Kishimoto H その他. Degradation mechanism with impurities and life time estimation for SOFCs. : ECS Transactions. 1 版 巻 42. 2012. p. 297-304 https://doi.org/10.1149/1.4705506
Horita, T. ; Cho, D. H. ; Wang, F. ; Nishi, M. ; Shimonosono, T. ; Kishimoto, H. ; Yamaji, K. ; Brito, M. E. ; Yokokawa, H. / Degradation mechanism with impurities and life time estimation for SOFCs. ECS Transactions. 巻 42 1. 版 2012. pp. 297-304
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