کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7710889 | 1497405 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel method to determine the I-V curve and polarization resistance at the three-phase boundary of composite cathode
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The oxygen incorporation process is investigated in a new insight based on the electrical conductivity relaxation (ECR) technique. A theoretical method is proposed to qualitatively evaluate the electrochemical performance for the oxygen reduction reaction on the electrocatalyst for solid oxide fuel cells (SOFCs). In this method, the change in oxygen partial pressure to conduct the ECR process corresponds to an electromotive force while the surface reaction rate to a current density. Accordingly, the polarization resistance as well as the current-voltage relation can be derived for the oxygen reduction reaction occurred on the electrocatalyst-gas two-phase interface and at the electrocatslyst-electrolyte-gas three-phase boundary. The method is demonstrated with our previously experimental results on the composite system consisting of lanthanum strontium cobalt ferrite and samaria-doped ceria, which is a typical composite cathode for intermediate-temperature SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 20, 1 June 2016, Pages 8589-8594
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 20, 1 June 2016, Pages 8589-8594
نویسندگان
Bobing Hu, Yihang Li, Changrong Xia,