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Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes with Co Nanoparticles Encapsulated at the Tips: Uniform and Large‐Scale Synthesis and High‐Performance Electrocatalysts for Oxygen Reduction

In recent years, various non‐precious metal electrocatalysts for the oxygen reduction reaction (ORR) have been extensively investigated. The development of an efficient and simple method to synthesize non‐precious metal catalysts with ORR activity superior to that of Pt is extremely significant for... Full description

Journal Title: Chemistry – A European Journal 28 September 2015, Vol.21(40), pp.14022-14029
Main Author: Cao, Tai
Other Authors: Wang, Dingsheng , Zhang, Jiatao , Cao, Chuanbao , Li, Yadong
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0947-6539 ; E-ISSN: 1521-3765 ; DOI: 10.1002/chem.201502040
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recordid: wj10.1002/chem.201502040
title: Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes with Co Nanoparticles Encapsulated at the Tips: Uniform and Large‐Scale Synthesis and High‐Performance Electrocatalysts for Oxygen Reduction
format: Article
creator:
  • Cao, Tai
  • Wang, Dingsheng
  • Zhang, Jiatao
  • Cao, Chuanbao
  • Li, Yadong
subjects:
  • Doping
  • Nanotubes
  • Nitrogen
  • Oxygen
  • Reduction
  • Transition Metals
ispartof: Chemistry – A European Journal, 28 September 2015, Vol.21(40), pp.14022-14029
description: In recent years, various non‐precious metal electrocatalysts for the oxygen reduction reaction (ORR) have been extensively investigated. The development of an efficient and simple method to synthesize non‐precious metal catalysts with ORR activity superior to that of Pt is extremely significant for large‐scale applications of fuel cells. Here, we develop a facile, low‐cost, and large‐scale synthesis method for uniform nitrogen‐doped (N‐doped) bamboo‐like CNTs (NBCNT) with Co nanoparticles encapsulated at the tips by annealing a mixture of cobalt acetate and melamine. The uniform NBCNT shows better ORR catalytic activity and higher stability in alkaline solutions as compared with commercial Pt/C and comparable catalytic activity to Pt/C in acidic media. NBCNTs exhibit outstanding ORR catalytic activity due to high defect density, uniform bamboo‐like structure, and the synergistic effect between the Co nanoparticles and protective graphitic layers. This facile method to synthesize catalysts, which is amenable to the large‐scale commercialization of fuel cells, will open a new avenue for the development of low‐cost and high‐performance ORR catalysts to replace Pt‐based catalysts for applications in energy conversion. : A facile synthesis for uniform, nitrogen‐doped, bamboo‐like carbon nanotubes (CNTs) with Co nanoparticles encapsulated at the tips was developed (see figure). The catalyst shows better oxygen reduction reaction (ORR) catalytic activity and higher stability in alkaline solutions than that of commercial Pt/C and comparable catalytic activity to Pt/C in acid media.
language: eng
source:
identifier: ISSN: 0947-6539 ; E-ISSN: 1521-3765 ; DOI: 10.1002/chem.201502040
fulltext: fulltext
issn:
  • 0947-6539
  • 09476539
  • 1521-3765
  • 15213765
url: Link


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titleBamboo‐Like Nitrogen‐Doped Carbon Nanotubes with Co Nanoparticles Encapsulated at the Tips: Uniform and Large‐Scale Synthesis and High‐Performance Electrocatalysts for Oxygen Reduction
creatorCao, Tai ; Wang, Dingsheng ; Zhang, Jiatao ; Cao, Chuanbao ; Li, Yadong
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subjectDoping ; Nanotubes ; Nitrogen ; Oxygen ; Reduction ; Transition Metals
descriptionIn recent years, various non‐precious metal electrocatalysts for the oxygen reduction reaction (ORR) have been extensively investigated. The development of an efficient and simple method to synthesize non‐precious metal catalysts with ORR activity superior to that of Pt is extremely significant for large‐scale applications of fuel cells. Here, we develop a facile, low‐cost, and large‐scale synthesis method for uniform nitrogen‐doped (N‐doped) bamboo‐like CNTs (NBCNT) with Co nanoparticles encapsulated at the tips by annealing a mixture of cobalt acetate and melamine. The uniform NBCNT shows better ORR catalytic activity and higher stability in alkaline solutions as compared with commercial Pt/C and comparable catalytic activity to Pt/C in acidic media. NBCNTs exhibit outstanding ORR catalytic activity due to high defect density, uniform bamboo‐like structure, and the synergistic effect between the Co nanoparticles and protective graphitic layers. This facile method to synthesize catalysts, which is amenable to the large‐scale commercialization of fuel cells, will open a new avenue for the development of low‐cost and high‐performance ORR catalysts to replace Pt‐based catalysts for applications in energy conversion. : A facile synthesis for uniform, nitrogen‐doped, bamboo‐like carbon nanotubes (CNTs) with Co nanoparticles encapsulated at the tips was developed (see figure). The catalyst shows better oxygen reduction reaction (ORR) catalytic activity and higher stability in alkaline solutions than that of commercial Pt/C and comparable catalytic activity to Pt/C in acid media.
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descriptionIn recent years, various non‐precious metal electrocatalysts for the oxygen reduction reaction (ORR) have been extensively investigated. The development of an efficient and simple method to synthesize non‐precious metal catalysts with ORR activity superior to that of Pt is extremely significant for large‐scale applications of fuel cells. Here, we develop a facile, low‐cost, and large‐scale synthesis method for uniform nitrogen‐doped (N‐doped) bamboo‐like CNTs (NBCNT) with Co nanoparticles encapsulated at the tips by annealing a mixture of cobalt acetate and melamine. The uniform NBCNT shows better ORR catalytic activity and higher stability in alkaline solutions as compared with commercial Pt/C and comparable catalytic activity to Pt/C in acidic media. NBCNTs exhibit outstanding ORR catalytic activity due to high defect density, uniform bamboo‐like structure, and the synergistic effect between the Co nanoparticles and protective graphitic layers. This facile method to synthesize catalysts, which is amenable to the large‐scale commercialization of fuel cells, will open a new avenue for the development of low‐cost and high‐performance ORR catalysts to replace Pt‐based catalysts for applications in energy conversion. : A facile synthesis for uniform, nitrogen‐doped, bamboo‐like carbon nanotubes (CNTs) with Co nanoparticles encapsulated at the tips was developed (see figure). The catalyst shows better oxygen reduction reaction (ORR) catalytic activity and higher stability in alkaline solutions than that of commercial Pt/C and comparable catalytic activity to Pt/C in acid media.
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abstractIn recent years, various non‐precious metal electrocatalysts for the oxygen reduction reaction (ORR) have been extensively investigated. The development of an efficient and simple method to synthesize non‐precious metal catalysts with ORR activity superior to that of Pt is extremely significant for large‐scale applications of fuel cells. Here, we develop a facile, low‐cost, and large‐scale synthesis method for uniform nitrogen‐doped (N‐doped) bamboo‐like CNTs (NBCNT) with Co nanoparticles encapsulated at the tips by annealing a mixture of cobalt acetate and melamine. The uniform NBCNT shows better ORR catalytic activity and higher stability in alkaline solutions as compared with commercial Pt/C and comparable catalytic activity to Pt/C in acidic media. NBCNTs exhibit outstanding ORR catalytic activity due to high defect density, uniform bamboo‐like structure, and the synergistic effect between the Co nanoparticles and protective graphitic layers. This facile method to synthesize catalysts, which is amenable to the large‐scale commercialization of fuel cells, will open a new avenue for the development of low‐cost and high‐performance ORR catalysts to replace Pt‐based catalysts for applications in energy conversion. : A facile synthesis for uniform, nitrogen‐doped, bamboo‐like carbon nanotubes (CNTs) with Co nanoparticles encapsulated at the tips was developed (see figure). The catalyst shows better oxygen reduction reaction (ORR) catalytic activity and higher stability in alkaline solutions than that of commercial Pt/C and comparable catalytic activity to Pt/C in acid media.
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doi10.1002/chem.201502040
pages14022-14029
date2015-09-28