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Title: Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions

Abstract

Non-noble metal electrocatalysts toward the oxygen reduction reaction (ORR) are highly required to substitute expensive Pt/C as the cathode of proton exchange membrane fuel cells. However, the relatively low ORR activity of Pt-free catalysts under acidic conditions is the major issue. Herein, we engineered a three-dimensional structure consisting of atomically dispersed Fe, N-doped hollow carbon nanospheres linked by carbon nanotubes as an electrocatalyst for the ORR. Benefiting from the unique structure and high-density atomic Fe–N x sites, this new type of electrocatalyst showed an impressive ORR half-wave potential of 0.84 V and kinetic current density of 13.1 mA cm -2 at a potential of 0.8 V in acidic media, which was even better those of commercial Pt/C.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4];  [5];  [5]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [5]; ORCiD logo [7]
  1. Hong Kong Univ. of Science and Technology, Guangzhou (China). Fok Ying Tung Research Inst.; Washington State Univ., Pullman, WA (United States). School of Mechanical and Materials Engineering; Chinese Academy of Sciences (CAS), Shenyang (China). Shenyang National Lab. for Materials Science, Inst. of Metal Research
  2. Chinese Academy of Sciences (CAS), Shenyang (China). Shenyang National Lab. for Materials Science, Inst. of Metal Research
  3. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry; Argonne National Lab. (ANL), Argonne, IL (United States). X-ray Science Division
  4. Northern Illinois Univ., DeKalb, IL (United States). Dept. of Chemistry and Biochemistry
  5. Washington State Univ., Pullman, WA (United States). School of Mechanical and Materials Engineering
  6. Chongqing Univ., Chongqing (China). College of Chemistry and Chemical Engineering
  7. Hong Kong Univ. of Science and Technology, Guangzhou (China). Fok Ying Tung Research Inst.; Hong Kong Univ. of Science and Technology, Hong Kong (China). Dept. of Chemical and Biological Engineering
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Key Research and Development Program of China; Research Grant Council of the Hong Kong Special Administrative Region
OSTI Identifier:
1574382
Alternate Identifier(s):
OSTI ID: 1525507
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 7; Journal Issue: 24; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Fe-N; carbon nanotubes; hollow carbon nanospheres; oxygen reduction; single-atom catalysts

Citation Formats

Li, Jin-Cheng, Cheng, Min, Li, Tao, Ma, Lu, Ruan, Xiaofan, Liu, Dong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Wei, Zidong, Lin, Yuehe, and Shao, Minhua. Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions. United States: N. p., 2019. Web. doi:10.1039/c9ta00508k.
Li, Jin-Cheng, Cheng, Min, Li, Tao, Ma, Lu, Ruan, Xiaofan, Liu, Dong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Wei, Zidong, Lin, Yuehe, & Shao, Minhua. Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions. United States. doi:10.1039/c9ta00508k.
Li, Jin-Cheng, Cheng, Min, Li, Tao, Ma, Lu, Ruan, Xiaofan, Liu, Dong, Cheng, Hui-Ming, Liu, Chang, Du, Dan, Wei, Zidong, Lin, Yuehe, and Shao, Minhua. Tue . "Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions". United States. doi:10.1039/c9ta00508k.
@article{osti_1574382,
title = {Carbon nanotube-linked hollow carbon nanospheres doped with iron and nitrogen as single-atom catalysts for the oxygen reduction reaction in acidic solutions},
author = {Li, Jin-Cheng and Cheng, Min and Li, Tao and Ma, Lu and Ruan, Xiaofan and Liu, Dong and Cheng, Hui-Ming and Liu, Chang and Du, Dan and Wei, Zidong and Lin, Yuehe and Shao, Minhua},
abstractNote = {Non-noble metal electrocatalysts toward the oxygen reduction reaction (ORR) are highly required to substitute expensive Pt/C as the cathode of proton exchange membrane fuel cells. However, the relatively low ORR activity of Pt-free catalysts under acidic conditions is the major issue. Herein, we engineered a three-dimensional structure consisting of atomically dispersed Fe, N-doped hollow carbon nanospheres linked by carbon nanotubes as an electrocatalyst for the ORR. Benefiting from the unique structure and high-density atomic Fe–Nx sites, this new type of electrocatalyst showed an impressive ORR half-wave potential of 0.84 V and kinetic current density of 13.1 mA cm-2 at a potential of 0.8 V in acidic media, which was even better those of commercial Pt/C.},
doi = {10.1039/c9ta00508k},
journal = {Journal of Materials Chemistry. A},
number = 24,
volume = 7,
place = {United States},
year = {2019},
month = {5}
}

Journal Article:
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