Construction of N, P Co‐Doped Carbon Frames Anchored with Fe Single Atoms and Fe 2 P Nanoparticles as a Robust Coupling Catalyst for Electrocatalytic Oxygen Reduction
China University of Petroleum, East China · Tsinghua University · +9 more institutions
Abstract
Abstract A coupling catalyst of highly dispersed N, P co‐doped carbon frames (NPCFs) anchored with Fe single atoms (SAs) and Fe 2 P nanoparticles (NPs) is synthesized by a novel in situ doping–adsorption–phosphatization strategy for the electrocatalytic oxygen reduction reaction (ORR). The optimized Fe SAs‐Fe 2 P NPs/NPCFs‐2.5 catalyst shows a superior ORR activity and stability in 0.5 m H 2 SO 4 and 0.1 m KOH, respectively. Theoretical calculations reveal a synergistic effect, in that the existence of Fe 2 P weakens the adsorption of ORR intermediates on active sites and lowers the reaction free energy. The doped P atoms with a strong electron‐donating ability elevate the energy level of Fe‐3d orbitals and…
Citation impact
- FWCI
- 11.22
- Percentile
- 100%
- References
- 49
Authors
24Topics & keywords
- Materials science
- Catalysis
- Oxygen reduction reaction
- Oxygen reduction
- Electrocatalyst
- Nanoparticle
- Carbon fibers
- Coupling (piping)
- Affordable and clean energy