کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7717472 | 1497476 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells](/preview/png/7717472.png)
چکیده انگلیسی
Electrical performance degradation relating to materials interactions at elevated temperatures is one of the primary technical limitations to the near term successful commercialization of solid oxide electrolysis cells (SOECs). Electrochemical performance and structural degradation of nickel-YSZ fuel electrodes (SOEC cathodes) were studied as functions of materials, preparation techniques, and operating conditions. Significant electrochemical degradation was observed in cells operated at 840 °C with and without voltage bias. Carbon deposition, Ni evaporation, and impurity poisoning were not observed to negatively affect performance. However, the high Ni content and large initial Ni particle size caused rapid Ni migration and agglomeration. The agglomeration reduced Ni electrical interconnectivity as well as contact area with the current collector.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 18718-18726
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 18718-18726
نویسندگان
Michael Keane, Hui Fan, Minfang Han, Prabhakar Singh,