A N-doped carbon nanotube catalyst containing a high concentration of single Fe atoms was prepared by a simple and scalable atomic isolation method, in which a metal isolation agent was introduced to isolate single Fe atoms and was then evaporated to produce abundant micropores that host single Fe atom active sites. As a result, the catalysts obtained showed excellent ORR performance, even better than that of commercial Pt/C catalysts in an acidic medium.
- Jin-Cheng Li
- Zhi-Qing Yang
- Hui-Ming Cheng
