کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1286159 1497915 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pr4Ni3O10+δ: A new promising oxygen electrode material for solid oxide fuel cells
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Pr4Ni3O10+δ: A new promising oxygen electrode material for solid oxide fuel cells
چکیده انگلیسی


• The study of Pr4Ni3O10+δ as cathode material for SOFCs is reported first time.
• It shows high structural and chemical stability up to 1000 °C under air and oxygen.
• Polarization resistance as low as 0.16 Ω·cm2 at T = 600 °C is measured.
• A single cell produced high power density: 1.60 W cm−2 at 800 °C and 0.68 W cm−2 at 700 °C.

The present work is focused on the study of Pr4Ni3O10+δ as a new cathode material for Solid Oxide Fuel Cells (SOFCs). The structural study leads to an indexation in orthorhombic structure with Fmmm space group, this structure being thermally stable throughout the temperature range up to 1000 °C under air and oxygen. The variation of oxygen content (10+δ) as a function of temperature under different atmospheres show that Pr4Ni3O10+δ is always oxygen over-stoichiometric, which further suggests its MIEC properties. The polarization resistance (Rp) of Pr4Ni3O10+δ electrode is measured for GDC/co-sintered and two-step sintered half cells. The Rp for co-sintered sample is found to be 0.16 Ω cm2 at 600 °C under air, which is as low as the one of highest performing Pr2NiO4+δ nickelate (Rp = 0.15 Ω cm2 at 600 °C). Moreover, an anode supported (Ni-YSZ//YSZ) single cell including GDC//Pr4Ni3O10+δ co-sintered electrode shows a maximum power density of 1.60 W cm−2 at 800 °C and 0.68 W cm−2 at 700 °C. Here, the work is emphasized on the very close electrochemical performance of Pr4Ni3O10+δ compared to the one of Pr2NiO4+δ with higher chemical stability, which gives great interests to consider this material as a very interesting oxygen-electrode for SOFCs.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 317, 15 June 2016, Pages 184–193
نویسندگان
, , , , , , , ,