دورية أكاديمية
Improving NiNX and pyridinic N active sites with space-confined pyrolysis for effective CO2 electroreduction
| العنوان: | Improving NiNX and pyridinic N active sites with space-confined pyrolysis for effective CO2 electroreduction |
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| المؤلفون: | Zhaozhao Zhu, Zhao Li, Junjie Wang, Rong Li, Haiyuan Chen, Yulan Li, Jun Song Chen, Rui Wu, Zidong Wei |
| المصدر: | eScience, Vol 2, Iss 4, Pp 445-452 (2022) |
| بيانات النشر: | KeAi Communications Co. Ltd., 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Mechanical engineering and machinery LCC:Electronics |
| مصطلحات موضوعية: | CO2 electroreduction, NiNX-pyridinic N, Porous carbon nanofiber, SiO2 confinement, Mechanical engineering and machinery, TJ1-1570, Electronics, TK7800-8360 |
| الوصف: | Even though various nickel–nitrogen–carbon (Ni-N-C) combinations are prospective low-cost catalysts for the CO2 electroreduction reaction (CO2RR), which is one avenue for attaining carbon neutrality, the detailed role of different N species has hardly been investigated. Here, we report a hollow porous N-doped carbon nanofiber with NiNX-pyridinic N active species (denoted as h-Ni-N-C) developed using a facile electrospinning and SiO2 space-confined pyrolysis strategy. The NiNX-pyridinic N species are facilely generated during the pyrolysis process, giving rise to enhanced activity and selectivity for the CO2RR. The optimized h-Ni-N-C exhibits a high CO Faradaic efficiency of 91.3% and a large current density of −15.1 mA cm−2 at −0.75 V versus reversible hydrogen electrode in an H-cell. Density functional theory (DFT) results show that NiN4-pyridinic N species demonstrate a lower free energy for the catalyst's rate-determining step than isolated NiN4 and pyridinic N species, without affecting the desorption of CO∗ intermediate. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2667-1417 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S2667141722000593Test; https://doaj.org/toc/2667-1417Test |
| DOI: | 10.1016/j.esci.2022.05.002 |
| الوصول الحر: | https://doaj.org/article/3b2fea70103c45559e62981b4f4c915aTest |
| رقم الانضمام: | edsdoj.3b2fea70103c45559e62981b4f4c915a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26671417 |
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| DOI: | 10.1016/j.esci.2022.05.002 |