Back to Search
Start Over
Facile synthesis of efficient core-shell structured iron-based carbon catalyst for oxygen reduction reaction
- Source :
- International Journal of Hydrogen Energy. 43:1386-1395
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Controlled synthesis of efficient core-shell non-precious metal catalysts for oxygen reduction reaction (ORR) is undoubtedly crucial but challenging for the extensive application of fuel cells and metal-air batteries. Herein, we prepared a core-shell structured Fe/FeCx nanoparticles and porous carbon composited catalyst (Fe/FeCx@NC) via a facile two-step heat treatment strategy. The Fe/FeCx@NC-800−0.5 prepared with secondary anneal at 800 °C for 0.5 h exhibits superior ORR performance to the commercial Pt/C in terms of comparable onset potential, higher half-wave potential, and outstanding long-term durability in alkaline media. Through combining the physical and electrochemical characterizations of Fe/FeCx@NC-T−t with different anneal temperature and precursors, the outstanding ORR performance of Fe/FeCx@NC-800−0.5 is caused by the synergistic effect between Fe/FeCx core and enriched pyridinic N- and graphitic N-doped carbon shell as well as porous carbon with large specific surface area. The structure-activity relationship of core-shell structured Fe–N–C catalysts for ORR provides directions for the development of advanced nonprecious metals catalysts.
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
chemistry.chemical_element
Nanoparticle
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrochemistry
01 natural sciences
0104 chemical sciences
Catalysis
Core shell
Fuel Technology
chemistry
Chemical engineering
Iron based
Specific surface area
Oxygen reduction reaction
0210 nano-technology
Carbon
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........6d2497a9f5f0b91ae84c7accef1cad5d