عنوان المقالة:Electrocatalytic Activity of Lanthanum Chromite-Based Composite Cathode for Ammonia Synthesis from Water and Nitrogen
إبراهيم علي أحمد عمار | Ibrahim Ali Ahmed Amar | 12538
نوع النشر
مجلة علمية
المؤلفون بالعربي
Ibrahim. A Amar, Mohammed M. Ahwidi
الملخص الانجليزي
The electrocatalytic ammonia synthesis using water (along with nitrogen) as a hydrogen source is proposed as an alternative green and clean technology to the energy-intensive and CO2-emitting process (Haber-Bosch) for ammonia production. Besides, a selective electrocatalyst for ammonia synthesis versus the competing hydrogen evolution remains elusive. This study aims to investigate the electrocatalytic activity of non-noble metal Co and Fe-free perovskite oxide-based composite cathode (La0.75Sr0.25Cr0.5Mn0.5O3-δ-Ce0.8Gd0.18Ca0.02O2-δ) towards ammonia synthesis from H2O and N2. The electrocatalyst was synthesized via a sol-gel process and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Ammonia was successfully with a maximum formation rate of 2.5 × 10-10 mol s-1 cm-2 and Faradaic efficiency of 0.52% at 400 oC and applied voltage of 1.4 V. The results demonstrated that the proposed non-noble metal-based electrocatalyst is a promising material for the carbon-free ammonia synthesis process.
تاريخ النشر
20/01/2021
الناشر
Advanced Materials Research
رقم المجلد
1160
رقم العدد
ISSN/ISBN
1662-8985
رابط DOI
doi.org/10.4028/www.scientific.net/AMR.1160.65
الصفحات
65-74
رابط الملف
تحميل (416 مرات التحميل)
رابط خارجي
https://www.scientific.net/AMR.1160.65
الكلمات المفتاحية
Ammonia synthesis, electrosynthesis, lanthanum chromite, perovskite oxides, water, nitrogen reduction.
رجوع