کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1278795 1497436 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical performance of double perovskite Pr2NiMnO6 as a potential IT-SOFC cathode
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Electrochemical performance of double perovskite Pr2NiMnO6 as a potential IT-SOFC cathode
چکیده انگلیسی


• B-site ordered double perovskite material Pr2NiMnO6 was successfully prepared.
• Pr2NiMnO6 exhibits high chemical stability and comparable thermal expansion behavior with CGO electrolyte.
• The lowest area specific resistance is 0.38 Ω cm2 at 700 °C.
• The reaction rate limiting step is identified as a charge transfer process.

Double perovskite oxide Pr2NiMnO6 is evaluated as a potential cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The reactivity test indicates that no reaction occurs between Pr2NiMnO6 and CGO at 1200 °C in air. The thermal expansion coefficients (TEC) of Pr2NiMnO6 are 10.6 × 10−6 K−1 in air and 11.5 × 10−6 K−1 in nitrogen atmosphere within a temperature range of 100–800 °C. The electrochemical properties of Pr2NiMnO6 cathode are characterized by ac impedance and dc polarization methods, respectively. The lowest area specific resistance (ARS) is 0.38 Ω cm2 at 700 °C in air. The dependence of ASR with oxygen partial pressure indicates that the charge transfer process is the rate-limiting step for oxygen reduction reaction on Pr2NiMnO6 cathode.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 37, 5 October 2015, Pages 12761–12769
نویسندگان
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