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Two-Dimensional Leafy Fe/N-Doped Carbon Nanomaterials Derived from Vitamin C-Modified ZIF-L for Efficient Oxygen Reduction Reaction.
- Source :
- Electronic Materials Letters; Sep2024, Vol. 20 Issue 5, p592-602, 11p
- Publication Year :
- 2024
-
Abstract
- Oxygen reduction reaction (ORR) is an important half-reaction in various energy devices such as fuel cells. Here, 2D dendritic Fe/N co-doped carbon-based nanosheet composites (L-Fe-CNT@NCS-900) were obtained by high-temperature calcination using ZIF-L generated in the aqueous phase as a precursor and Vitamin C as a modifier. It is found that the catalysts calcined at 900℃ possessed the large specific surface area and the pore size distribution graphs showed a narrow micropore size distribution centered at about 1.8 nm. Furthermore, the Fe-N-C species was detected, which further improved the ORR performance as an active center. Thus, the L-Fe-CNT@NCS-900 calcined at 900 °C achieved the best ORR performance with a half-wave potential (E<subscript>1/2</subscript>) of 0.85 V, and the hydrogen peroxide yield is only about 4% during the ORR process. Meanwhile, L-Fe-CNT@NCS-900 exhibited outstanding methanol resistance. This work proposes a new strategy for constructing an efficient electrocatalysts for oxygen reduction reaction. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17388090
- Volume :
- 20
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Electronic Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 178970282
- Full Text :
- https://doi.org/10.1007/s13391-024-00496-x