Ancient Chemistry 'Pharaoh’s Snakes' for Efficient Fe-/N-Doped Carbon Electrocatalysts
| Autor: | Guangyuan Ren, Xianyong Lu, Ying Zhu, Liangliang Gao, Jianglan Shui, Hequn Yang, Liming Dai, Chao Teng, Yunan Li |
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| Rok vydání: | 2018 |
| Předmět: |
Nanotube
Materials science Oxygen evolution chemistry.chemical_element 02 engineering and technology Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chemical reaction 0104 chemical sciences Catalysis Chemical engineering chemistry Reversible hydrogen electrode General Materials Science 0210 nano-technology Carbon Nanosheet |
| Zdroj: | ACS Applied Materials & Interfaces. 10:10778-10785 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | The method of fabricating nonprecious metal electrocatalysts with high activity and durability through a facile and eco-friendly procedure is of great significance to the development of low-cost fuel cells and metal–air batteries. Herein, we present that an ancient chemical reaction of “Pharaoh’s snakes” can be a fast and convenient technique to prepare Fe-/N-doped carbon (Fe/N–C) nanosheet/nanotube electrocatalysts with sugar, soda, melamine, and iron nitrate as precursors. The resultant Fe/N–C catalyst has a hierarchically porous structure, a large surface area, and uniformly distributed active sites. The catalyst shows high electrocatalytic activities toward both the oxygen reduction reaction with a half-wave potential of 0.90 V (vs reversible hydrogen electrode) better than that of Pt/C and the oxygen evolution reaction with an overpotential of 0.46 V at the current density of 10 mA cm–2 comparable to that of RuO2. The activity and stability of the catalyst are also evaluated in primary and rechargeab... |
| Databáze: | OpenAIRE |
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