کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1289842 | 973311 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cathode reaction models and performance analysis of Sm0.5Sr0.5CoO3−δ–BaCe0.8Sm0.2O3−δ composite cathode for solid oxide fuel cells with proton conducting electrolyte
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Cathode reaction models for solid oxide fuel cells with proton conducting electrolyte (H-SOFC) are proposed, and the reacting orders for each elementary step with respect to oxygen and water vapor partial pressure are calculated. The limiting steps of cathode reactions are investigated with Sm0.5Sr0.5CoO3−δ (SSC)–BaCe0.8Sm0.2O3−δ (BCS) composite cathodes. The results suggest that the migration of protons to TPBs and the surface diffusion of Oad− might be the limiting reactions for SSC–BCS composite cathodes in wet atmosphere, while the oxygen ions transferring into electrolyte, the reducing of Oad to Oad−, and surface diffusion of Oad− might be the limiting reactions for SSC–BCS composite cathode in dry atmosphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 194, Issue 1, 20 October 2009, Pages 263–268
Journal: Journal of Power Sources - Volume 194, Issue 1, 20 October 2009, Pages 263–268
نویسندگان
Fei He, Tianzhi Wu, Ranran Peng, Changrong Xia,