Academic Journal
Nano-sized Pt–NbO x supported on TiN as cost-effective electrocatalyst for oxygen reduction reaction
| العنوان: | Nano-sized Pt–NbO x supported on TiN as cost-effective electrocatalyst for oxygen reduction reaction |
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| المؤلفون: | N. F. Daudt, A. Poozhikunnath, H. Yu, L. Bonville, R. Maric |
| المصدر: | Materials for Renewable and Sustainable Energy, Vol 9, Iss 3, Pp 1-17 (2020) |
| بيانات النشر: | SpringerOpen, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Renewable energy sources |
| مصطلحات موضوعية: | PEMFC, Pt–NbO x electrocatalyst, TiN electrocatalyst supports, Oxygen reduction reaction, Reactive spray deposition technology, Energy conservation, TJ163.26-163.5, Renewable energy sources, TJ807-830 |
| الوصف: | Abstract Proton exchange membrane fuel cells (PEMFC) play a key role for sustainable energy; however, catalyst degradation remains one of the main challenges for competing with traditional energy technologies. The Pt/C commercially available electrocatalysts are susceptible to Pt dissolution and carbon support corrosion. In this context, we design a Pt–NbO x catalyst supported on TiN nanoparticles as an alternative electrocatalyst for the oxygen reduction reaction (ORR). The use of Pt–NbO x reduces materials’ costs by lowering the required platinum loading and improving catalyst performance. The TiN support is selected to improve support stability. The electrocatalyst is successfully synthesized by a one-step flame spray process called reactive spray deposition technology. Electrocatalyst with two different very low Pt loadings (0.032 mg cm−2 and 0.077 mg cm−2) are investigated and their performance as cathode is evaluated by the rotating disk electrode method. The new electrocatalyst based on Pt–NbO x supported on TiN has ORR performance that is comparable to the state-of-the-art Pt/C electrocatalyst. A half-wave potential of 910 mV was observed in the polarization curves, as well as a mass activity of 0.120 A∙mgPt −1 and a specific activity of 283 μA∙cmPt −2 at 0.9 V. These results demonstrate that Pt–NbO x on TiN electrocatalyst has the potential for replacing Pt/C cathode in PEMFC. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2194-1459 2194-1467 |
| Relation: | http://link.springer.com/article/10.1007/s40243-020-00179-1; https://doaj.org/toc/2194-1459; https://doaj.org/toc/2194-1467 |
| DOI: | 10.1007/s40243-020-00179-1 |
| URL الوصول: | https://doaj.org/article/53fb2870bc374af6bbb9b88ae594ff8a |
| رقم الانضمام: | edsdoj.53fb2870bc374af6bbb9b88ae594ff8a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 21941459 21941467 |
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| DOI: | 10.1007/s40243-020-00179-1 |