FeCo-based mesoporous carbon shells modified N-doped porous carbon spheres for oxygen reduction reaction
| Autor: | Yang Lv, Yinghao Xu, Chaoyue Zhao, Yan Xie, He Wang, Jiahui Huang, Li Chen, Xinxin Jin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Zeolitic imidazolate framework Doping Mesoporous carbon shell N-doped porous carbon chemistry.chemical_element Nitride Electrochemistry Carbide Oxygen reduction reaction Metal chemistry.chemical_compound chemistry Chemical engineering visual_art visual_art.visual_art_medium TA401-492 Reversible hydrogen electrode General Materials Science Methanol Carbon Metal-macrocycle Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Progress in Natural Science: Materials International, Vol 31, Iss 4, Pp 527-535 (2021) |
| ISSN: | 1002-0071 |
| Popis: | FeCo-based non-noble metal electrocatalysts (NNMEs) of FeCo/MCS-NPCS was fabricated by immobilization of hemin on mesoporous carbon shells modified N-doped porous carbon spheres (MCS-NPCS). The obtained FeCo/MCS-NPCS exhibits a half-wave potential (E1/2) of 0.851 V versus the reversible hydrogen electrode (vs. RHE) and a limited-diffusion current density (JL) of 5.45 mA cm−2. In addition, FeCo/MCS-NPCS shows comparable oxygen reduction reaction (ORR) performances to 20 wt% Pt/C in terms of E1/2 and JL and better electrochemical properties, including the methanol tolerance and durability in alkaline solution. Such outstanding electrochemical activities of FeCo/MCS-NPCS can be ascribed to Fe and/or Co-based nitrides and carbides as well as N-doped carbon matrixes modified with mesoporous carbon shells. This research introduces a promising path to design and synthesize highly efficient FeCo–N–C electrocatalysts towards ORR. |
| Databáze: | OpenAIRE |
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