کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147713 | 1497387 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical properties of graded and homogeneous Ce0.9Gd0.1O2âδ-La0.6Sr0.4Co0.2Fe0.8O3âδ composite electrodes for intermediate-temperature solid oxide fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Graded and homogeneous CGO-LSCF composite electrodes deposited by Electrostatic Spray Deposition on an YSZ substrate have been studied with and without screen-printed LSCF current collector. Impedance spectroscopy measurements have been performed in air at open circuit potential between 450 °C and 700 °C; and during isothermal treatments at 600 °C for 200 h; and at 800 °C for 12 h to estimate the relevance of such oxygen electrodes for intermediate temperature solid oxide fuel cells (IT-SOFCs). A thin and dense CGO layer is firstly deposited to avoid any chemical reaction between LSCF and YSZ. No significant increase of the polarization resistance has been evidenced during isothermal test at 600 °C for 200 h, proving good stability of the electrode. Using a LSCF current collector layer (CCL), the polarization resistance decreases by a 1.5 order of magnitude compared to samples with single cathode functional layer (CFL). The electrochemical results do not conclusively indicate which composition presents lower polarization effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 38, 15 October 2016, Pages 17037-17043
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 38, 15 October 2016, Pages 17037-17043
نویسندگان
Jaroslaw Sar, Laurent Dessemond, Elisabeth Djurado,