کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1278795 | 1497436 | 2015 | 9 صفحه PDF | دانلود رایگان |

• 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.
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 37, 5 October 2015, Pages 12761–12769