Academic Journal
Oxygen Reduction Response of La and Ce Co-Doped SrCoO 3−δ Perovskite Oxide Grown on Porous Ni-Foam Substrate
| العنوان: | Oxygen Reduction Response of La and Ce Co-Doped SrCoO 3−δ Perovskite Oxide Grown on Porous Ni-Foam Substrate |
|---|---|
| المؤلفون: | Jinping Wang, Naveed Mushtaq, M. A. K. Yousaf Shah, Jiaen Wu, Henghui Li, Yuzheng Lu, Peng Wang |
| المصدر: | Crystals, Vol 12, Iss 1650, p 1650 (2022) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2022 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | La 0.2 Sr 0.8 Co 0.8 Ce 0.2 O 3−δ, La and Ce co-doped, porous Ni-foam substrate, electrochemical properties, spectroscopic studies, LT-SOFCs cathode, Crystallography, QD901-999 |
| الوصف: | Lately, ceramic fuel cells (CFCs) have held exceptional promise for joint small- and large-scale applications. However, the low-oxygen reduction response of cathode materials has hindered the low operating temperature of CFCs. Herein, we have developed a semiconductor based on La and Ce co-doped SrCoO 3 and embedded them in porous Ni-foam to study their electrochemical properties. The porous Ni-foam-pasted La 0.2 Sr 0.8 Co 0.8 Ce 0.2 O 3‒δ cathode displays small-area-specific resistance and excellent ORR (oxygen reduction reaction) activity at low operating temperatures (LT) of 450–500 °C. The proposed device has delivered an impressive fuel cell performance of 440 mW-cm −2 , using La 0.2 Sr 0.8 Co 0.8 Ce 0.2 O 3−δ embedded on porous Ni-foam substrate cathode operation at 550 °C with H 2 fuel and atmospheric air. It even can function well at a lower temperature of 450 °C. Moreover, La 0.2 Sr 0.8 Co 0.8 Ce 0.2 O 3−δ embedded on porous Ni-foam shows very good activation energy compared to individual SrCoO 3 and La 0.1 Sr 0.9 Co 0.9 Ce 0.1 O 3−δ embedded on porous Ni-foam, which help to promote ORR activity. Different characterization has been deployed, likewise: X-ray diffraction, photoelectron-spectroscopy, and electrochemical impedance spectroscopy for a better understanding of improved ORR electrocatalytic activity of prepared La 0.2 Sr 0.8 Co 0.8 Ce 0.2 O 3−δ embedded on porous Ni-foam substrate. These results can further help to develop functional cobalt-free electrocatalysts for LT-SOFCs. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2073-4352 |
| Relation: | https://www.mdpi.com/2073-4352/12/11/1650; https://doaj.org/toc/2073-4352; https://doaj.org/article/c4aa211dad854402a6085adb98020813 |
| DOI: | 10.3390/cryst12111650 |
| الاتاحة: | https://doi.org/10.3390/cryst12111650 https://doaj.org/article/c4aa211dad854402a6085adb98020813 |
| رقم الانضمام: | edsbas.790D64D7 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20734352 |
|---|---|
| DOI: | 10.3390/cryst12111650 |