کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7725046 1497836 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A pressurized ammonia-fueled anode-supported solid oxide fuel cell: Power performance and electrochemical impedance measurements
ترجمه فارسی عنوان
یک سلول سوختی جامد اکسید جامد حاوی آمونیاک تحت فشار با فشار: عملکرد قدرت و اندازه گیری امپدانس الکتروشیمیایی
کلمات کلیدی
سلول سوختی اکسید جامد تحت فشار آمونیاک، سلول پشتیبانی شده توسط آنود، عملکرد سلولی، طیف امپدانس الکتروشیمیایی، امپدانس نفوذ گاز، امپدانس تبدیل گاز،
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
Ammonia is recognized as a useful fuel for high-temperature solid oxide fuel cell with advantages over hydrogen. The challenge of ammonia solid oxide fuel cell is its performance durability especially at elevated operating pressure, which motivates this work to measure power and impedance of a pressurized anode-supported solid oxide fuel cell (530-μm-Ni-YSZ/3-μm-YSZ/15-μm-LSC-GDC) using ammonia as a fuel at both 1 atm and 3 atm, each pressure with three operating temperatures (750, 800, 850 °C). Results show that both pressurization and increasing temperature enhance the ammonia-fueled cell power densities which are closely matching with that of hydrogen, indicating an almost 100% ammonia conversion to hydrogen and nitrogen at T ≥ 750 °C. From Bode and Nyquist plots, we find that the polarization impedance is primarily contributed by the gas diffusion impedance with summit frequencies around 5-24 Hz and secondarily due to the gas conversion with summit frequencies around 0.03-0.07 Hz. When pressure increases, the gas diffusion impedance decreases noticeably, while the gas conversion impedance increases slightly. Moreover, a stability test shows little degradation even at 3 atm, suggesting that pressurized ammonia solid oxide fuel cell is feasible for future development of the hybrid power system integrating with micro gas turbines.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 396, 31 August 2018, Pages 80-87
نویسندگان
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