التفاصيل البيبلوغرافية
| العنوان: |
Boosting oxygen reduction catalysis with Fe-N@ZnO codoped highly graphitized carbon derived from N,N′-carbonyldiimidazole-Induced bimetallic coordinated polymer. |
| المؤلفون: |
Xin, Wen-Li1 (AUTHOR), Xu, Lian-Hua1 (AUTHOR), Lu, Kun-Kun1 (AUTHOR), Shan, Dan1 (AUTHOR) danshan@njust.edu.cn |
| المصدر: |
Applied Surface Science. Mar2020, Vol. 505, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*OXYGEN reduction, *CATALYSIS, *POLYMERS, *CARBON, *CARBONIZATION, *HETEROSTRUCTURES |
| مستخلص: |
• N,N′-carbonyldiimidazole was used to synthesize Zn-ZIFs in situ encapsulated ZnCO 3 via the solvent method. • Fe doping was feasibly achieved via post-synthesis method by introduction Fe3+ into Zn-ZIFs/ZnCO 3. • A highly graphitized carbon structure can be created synergistically by using Zn-ZIFs/ZnCO 3. Fe-N catalysts are one of the promising candidates with efficient oxygen reduction reaction (ORR) activities comparable to Pt-based catalysts. Therefore, in this work, a novel Fe-N based electrocatalyst with high activity, porous structure, and durability were prepared. Highly active N,N′-carbonyldiimidazole (CDI) was used to form zinc-based zeolitic imidazole frameworks involved with zinc carbonate (Zn-ZIFs@ZnCO 3). Fe-doping can be feasibly achieved by partial substitution Zn by Fe using Fe (NO) 3. Owing to the presence of ZnCO 3 and Fe3+, carbonization of Fe/Zn-ZIFs@ZnCO 3 at 925 °C under N 2 atmosphere endows the pyrolysis products with many highly active heterostructures of 3D graphene structure. The obtained Fe-N@ZnO possesses superior ORR performance to commercial 20% Pt/C catalysts, such as positive half-wave potential (0.851 V), good durability and methanol tolerance in 0.1 M KOH. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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