کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1272442 1497481 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
BaZr0.1Ce0.7Y0.1Yb0.1O3−δ as highly active and carbon tolerant anode for direct hydrocarbon solid oxide fuel cells
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
BaZr0.1Ce0.7Y0.1Yb0.1O3−δ as highly active and carbon tolerant anode for direct hydrocarbon solid oxide fuel cells
چکیده انگلیسی


• BZCYYb perovskite is evaluated as a potential anode material for the first time.
• Excellent performance of BZCYYb anode is obtained both in H2 and CH4 atmosphere.
• BZCYYb anode exhibits superb carbon resistance in the absence of excess steam.

BaZr0.1Ce0.7Y0.1Yb0.1O3−δ (BZCYYb) perovskite is synthesized and examined as an alternative anode material for intermediate temperature solid oxide fuel cells (IT-SOFCs) based on direct hydrocarbon fuels, using polarization and electrochemical impedance spectroscopy techniques. Single-phased BZCYYb anode shows an excellent activity for both hydrogen and methane oxidation reactions, achieving a polarization resistance of 0.25 and 0.93 Ω cm2, and overpotential of 20 and 202 mV at 100 mA cm−2 and 750 °C in wet H2 (3% H2O/97% H2) and wet CH4 (3% H2O/97% CH4), respectively. The electrocatalytic activity of BZCYYb anodes is significantly higher than that of the (La,Sr)(Cr,Mn)O3 anodes as reported in the literature. Furthermore, BZCYYb exhibits excellent resistance to carbon deposition. The present study demonstrates that BZCYYb perovskite is a promising alternative anode material for direct hydrocarbon fuels based SOFCs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 28, 23 September 2014, Pages 15975–15981
نویسندگان
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