عنوان المقالة:Electrochemical synthesis of ammonia based on doped-ceria-carbonate composite electrolyte and perovskite cathode Electrochemical synthesis of ammonia based on doped-ceria-carbonate composite electrolyte and perovskite cathode
إبراهيم علي أحمد عمار | Ibrahim Ali Ahmed Amar | 15327
- نوع النشر
- مجلة علمية
- المؤلفون بالعربي
- Ibrahim A Amar, Christophe TG Petit, Lei Zhang, Rong Lan, Peter J Skabara, Shanwen Tao
- المؤلفون بالإنجليزي
- Ibrahim A Amar, Christophe TG Petit, Lei Zhang, Rong Lan, Peter J Skabara, Shanwen Tao
- الملخص الانجليزي
- Electrochemical synthesis of ammonia was investigated using a cobalt-free La0.6Sr0.4Fe0.8Cu0.2O3-δ-Ce0.8Sm0.2O2-δ (LSFCu-SDC) composite cathode and SDC-ternary carbonate composite electrolyte. La0.6Sr0.4Fe0.8Cu0.2O3-δ and Ce0.8Sm0.2O2-δ were prepared via combined EDTA-citrate complexing sol–gel and glycine nitrate processes, respectively, and characterised by X-ray diffraction (XRD). Ammonia was successfully synthesised from wet hydrogen and dry nitrogen under atmospheric pressure using Ni-SDC, SDC-carbonate and LSFCu-SDC composites as anode, electrolyte and cathode respectively. Ammonia formation was observed at 400, 425, 450 and 475 °C and the maximum rate of ammonia production was found to be 5.39 × 10−9 mol s−1 cm−2 at 450 °C and 0.8 V. The AC impedance measurements were recorded before and after the ammonia synthesis in the range of temperature 400–475 °C. The formation of ammonia at the N2 side together with stable current at 450 °C under constant voltage demonstrates that SDC-(Li/Na/K)2CO3 composite electrolyte exhibits significant proton conduction at a temperature around 450 °C.
- تاريخ النشر
- 09/10/2011
- الناشر
- Solid State Ionics
- رقم المجلد
- 201
- رقم العدد
- 1
- رابط DOI
- https://doi.org/10.1016/j.ssi.2011.08.003
- الصفحات
- 94-100
- رابط خارجي
- https://www.sciencedirect.com/science/article/abs/pii/S0167273811004024
- الكلمات المفتاحية
- Electrochemical synthesis of ammonia Perovskite Composite anode Doped ceria-carbonate composite electrolyte Impedance spectroscopy