کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7727138 | 1497904 | 2016 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degradation of solid oxide cells during co-electrolysis of steam and carbon dioxide at high current densities
ترجمه فارسی عنوان
تجزیه سلول های اکسید جامد در طی الکترولیز بخار و دی اکسید کربن در تراکم های جاری بالا
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کلمات کلیدی
سلولهای الکترولیز اکسید جامد، تبدیل انرژی، دی اکسید کربن، بخار، تنزل،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
In this work, the durability of Ni-YSZ based solid oxide cells was investigated during co-electrolysis of steam and carbon dioxide (45% H2O + 45% CO2 + 10% H2) at current density of â1.5 or â2.0 A cmâ2. The cell consists of â¼300 μm Ni-YSZ support, â¼10 μm Ni-YSZ electrode, â¼10 μm YSZ electrolyte and â¼15 μm LSM-YSZ oxygen electrode. The gas conversion was 45% at â1.5 A cmâ2 and 60% at â2.0 A cmâ2, and the operating durations were up to 700 h. The detailed electrochemical analysis revealed significant increase of the ohmic resistance, oxide ion transport resistance in the Ni-YSZ composite electrodes and the electrochemical reaction resistance at the Ni-YSZ triple-phase boundaries. The performance degradation is mainly ascribed to the microstructural change in the Ni-YSZ electrode close to the YSZ electrolyte, including the percolation loss of Ni, the contact loss between Ni and YSZ electrolyte and the decomposition of YSZ close to Ni-YSZ|YSZ interface. The electrochemical performance and the microstructure of the oxygen electrode were found to be relatively stable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 328, 1 October 2016, Pages 452-462
Journal: Journal of Power Sources - Volume 328, 1 October 2016, Pages 452-462
نویسندگان
Youkun Tao, Sune Dalgaard Ebbesen, Mogens Bjerg Mogensen,