Symmetry Breaking of FeN 4 Moiety via Edge Defects for Acidic Oxygen Reduction Reaction
University of Science and Technology of China · National Synchrotron Radiation Laboratory · +6 more institutions
Abstract
Abstract Fe−N−C catalysts, with a planar D 4h symmetric FeN 4 structure, show promising as noble metal‐free oxygen reduction reaction catalysts. Nonetheless, the highly symmetric structure restricts the effective manipulation of its geometric and electronic structures, impeding further enhancements in oxygen reduction reaction performance. Here, a high proportion of asymmetric edge‐carbon was successfully introduced into Fe−N−C catalysts through morphology engineering, enabling the precise modulation of the FeN 4 active site. Electrochemical experimental results demonstrate that FeN 4 @porous carbon (FeN 4 @PC), featuring enriched asymmetric edge‐FeN 4 active sites, exhibits higher acidic oxygen reduction…
Citation impact
- FWCI
- 17.05
- Percentile
- 100%
- References
- 58
Authors
19- BTBing Tang
University of Science and Technology of China, National Synchrotron Radiation Laboratory, Tsinghua University
- QJQianqian Ji
University of Science and Technology of China, National Synchrotron Radiation Laboratory
- QJQianqian JiCorresponding
National Synchrotron Radiation Laboratory, Henan Normal University
- XZXilin Zhang
Henan Normal University
- RSRunchuan Shi
University of Science and Technology of China, National Synchrotron Radiation Laboratory, Henan Normal University
Topics & keywords
- Catalysis
- Chemistry
- Carbon fibers
- Materials science
- Nanotechnology
- Organic chemistry