Thermally Driven Structure and Performance Evolution of Atomically Dispersed FeN 4 Sites for Oxygen Reduction
Harbin Institute of Technology · University at Buffalo, State University of New York · +4 more institutions
Abstract
Abstract FeN 4 moieties embedded in partially graphitized carbon are the most efficient platinum group metal free active sites for the oxygen reduction reaction in acidic proton‐exchange membrane fuel cells. However, their formation mechanisms have remained elusive for decades because the Fe−N bond formation process always convolutes with uncontrolled carbonization and nitrogen doping during high‐temperature treatment. Here, we elucidate the FeN 4 site formation mechanisms through hosting Fe ions into a nitrogen‐doped carbon followed by a controlled thermal activation. Among the studied hosts, the ZIF‐8‐derived nitrogen‐doped carbon is an ideal model with well‐defined nitrogen doping and porosity. This…
Citation impact
- FWCI
- 15.79
- Percentile
- 100%
- References
- 62
Authors
13- JLJiazhan Li
Harbin Institute of Technology, University at Buffalo, State University of New York
- HZHanguang Zhang
University at Buffalo, State University of New York
- WSWiditha S. Samarakoon
Oregon State University
- WSWeitao Shan
University of Pittsburgh
- DADavid A. CullenCorresponding
Oak Ridge National Laboratory
Topics & keywords
- Reduction (mathematics)
- Oxygen reduction
- Oxygen
- Materials science
- Nanotechnology
- Chemical engineering
- Chemistry
- Engineering
- Clean water and sanitation
Funding
- NSNational Science FoundationAwards: 1804326, 1053575, DE-AC02-06CH11357, CBET-1604392
- UDU.S. Department of EnergyAwards: ACI-1053575, AC02-06CH11357, DE-AC02, 06CH11357, DE-AC02-06CH11357, DE-EE0008076, DE-AC02-
- DDuPontAward: DE-AC02-06CH11357
- NUNorthwestern UniversityAward: DE-AC02-06CH11357
- UOUniversity of PittsburghAward: ACI-1053575
- NNNational Natural Science Foundation of ChinaAwards: 21273058, DE-AC02-06CH11357, 21673064, ACI-1053575
- OOOffice of ScienceAwards: DE-AC02-06CH11357, DE-AC02, 06CH11357, AC02-06CH11357
- OOOffice of Energy Efficiency and Renewable EnergyAward: DE-EE0008076
- CFCenter for Research Computing, University of Pittsburgh
- DODivision of Chemical, Bioengineering, Environmental, and Transport SystemsAwards: 1604392, ACI-1053575, CBET-1604392, 1804326, 1604392, 1804326
- ANArgonne National LaboratoryAwards: DE-AC02, 06CH11357, AC02-06CH11357
- OROak Ridge National LaboratoryAward: DE-AC02-06CH11357