Construction of Highly Active Metal‐Containing Nanoparticles and FeCo‐N 4 Composite Sites for the Acidic Oxygen Reduction Reaction
| Autor: | Xi-Ming Qu, Gen Li, Chi Chen, Yan-Xia Jiang, Li-Yang Wan, You-Hu Chen, Yu Han, Shi-Gang Sun, Jian Yang, Shuhu Yin |
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| Rok vydání: | 2020 |
| Předmět: |
inorganic chemicals
Reaction mechanism 010405 organic chemistry Chemistry Doped carbon Inorganic chemistry Composite number technology industry and agriculture Nanoparticle chemistry.chemical_element General Medicine General Chemistry 010402 general chemistry 01 natural sciences Nitrogen Catalysis 0104 chemical sciences Metal visual_art visual_art.visual_art_medium Oxygen reduction reaction |
| Zdroj: | Angewandte Chemie International Edition. 59:21976-21979 |
| ISSN: | 1521-3773 1433-7851 |
| DOI: | 10.1002/anie.202010013 |
| Popis: | Metal-containing nanoparticles (M-NPs) in metal/nitrogen-doped carbon (M-N-C) catalysts have been considered hostile to the acidic oxygen reduction reaction (ORR). The relation between M-NPs and the active sites of metal coordinated with nitrogen (MNx ) is hard to establish in acid medium owing to the poor stability of M-NPs. Herein, we develop a strategy to successfully construct a new FeCo-N-C catalyst containing highly active M-NPs and MN4 composite sites (M/FeCo-SAs-N-C). Enhanced catalytic activity and stability of M/FeCo-SAs-N-C is shown experimentally. Calculations reveal that there is a strong interaction between M-NPs and FeN4 sites, which can favor ORR by activating the O-O bond, thus facilitating a direct 4 e- process. Those findings firstly shed light on the highly active M-NPs and FeN4 composite sites for catalyzing acid oxygen reduction reaction, and the relevant reaction mechanism is suggested. |
| Databáze: | OpenAIRE |
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