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Title: Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction

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.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Key Research and Development Program of China; USDOE Office of Science (SC)
OSTI Identifier:
1570447
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 9; Journal Issue: 7
Country of Publication:
United States
Language:
English
Subject:
Fe-N; carbon nanowire; density functional theory; oxygen reduction; single-atom catalysts

Citation Formats

Li, Jin-Cheng, Xiao, Fei, Zhong, Hong, Li, Tao, Xu, Mingjie, Ma, Lu, Cheng, Min, Liu, Dong, Feng, Shuo, Shi, Qiurong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Beckman, Scott P., Pan, Xiaoqing, Lin, Yuehe, and Shao, Minhua. Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction. United States: N. p., 2019. Web. doi:10.1021/acscatal.9b00869.
Li, Jin-Cheng, Xiao, Fei, Zhong, Hong, Li, Tao, Xu, Mingjie, Ma, Lu, Cheng, Min, Liu, Dong, Feng, Shuo, Shi, Qiurong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Beckman, Scott P., Pan, Xiaoqing, Lin, Yuehe, & Shao, Minhua. Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction. United States. doi:10.1021/acscatal.9b00869.
Li, Jin-Cheng, Xiao, Fei, Zhong, Hong, Li, Tao, Xu, Mingjie, Ma, Lu, Cheng, Min, Liu, Dong, Feng, Shuo, Shi, Qiurong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Beckman, Scott P., Pan, Xiaoqing, Lin, Yuehe, and Shao, Minhua. Mon . "Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction". United States. doi:10.1021/acscatal.9b00869.
@article{osti_1570447,
title = {Secondary-Atom-Assisted Synthesis of Single Iron Atoms Anchored on N-Doped Carbon Nanowires for Oxygen Reduction Reaction},
author = {Li, Jin-Cheng and Xiao, Fei and Zhong, Hong and Li, Tao and Xu, Mingjie and Ma, Lu and Cheng, Min and Liu, Dong and Feng, Shuo and Shi, Qiurong and Cheng, Hui-Ming and Liu, Chang and Du, Dan and Beckman, Scott P. and Pan, Xiaoqing and Lin, Yuehe and Shao, Minhua},
abstractNote = {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.},
doi = {10.1021/acscatal.9b00869},
journal = {ACS Catalysis},
number = 7,
volume = 9,
place = {United States},
year = {2019},
month = {7}
}