Journal article
Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction
ACS catalysis, Vol.9(7), pp.5929-5934
07/05/2019
Abstract
The development of efficient Fe–N–C materials enriched with single-atom Fe sites toward the oxygen reduction reaction (ORR) is still a great challenge because Fe atoms are mobile and easily aggregate into nanoparticles during the high-temperature treatment. Herein, we proposed a facile and universal secondary-atom-assisted strategy to prepare atomic iron sites with high density hosted on porous nitrogen-doped carbon nanowires (Fe–NCNWs). The Fe–NCNWs showed an impressive half-wave potential (E1/2) of 0.91 V and average kinetic current density (JK) of 6.0 mA cm–2 at 0.9 V in alkaline media. They also held a high ORR activity in acidic solution with the E1/2 of 0.82 V and average JK of 8.0 mA cm–2 at 0.8 V. Density functional theory calculations demonstrated that the high ORR activity achieved is originated from single-atom iron sites that decrease the energy barrier in the reaction path efficiently.
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Details
- Title
- Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction
- Creators
- Jin-Cheng Li - Washington State UniversityFei Xiao - Guangzhou HKUST Fok Ying Tung Research InstituteHong Zhong - Washington State UniversityTao Li - Northern Illinois UniversityMingjie Xu - University of California, IrvineLu Ma - Northern Illinois UniversityMin Cheng - Chinese Academy of SciencesDong Liu - Washington State UniversityShuo Feng - Washington State UniversityQiurong Shi - Washington State UniversityHui-Ming Cheng - Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaChang Liu - Chinese Academy of SciencesDan Du - Washington State UniversityScott P. Beckman - Washington State UniversityXiaoqing Pan - University of California, IrvineYuehe Lin - Washington State UniversityMinhua Shao - Hong Kong University of Science and Technology
- Publication Details
- ACS catalysis, Vol.9(7), pp.5929-5934
- Academic Unit
- School of Mechanical and Materials Engineering
- Number of pages
- 6
- Identifiers
- 99901227640201842
- Language
- English
- Resource Type
- Journal article