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The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template
The design of noble-metal-free catalysts for oxygen reduction reaction (ORR) is very important to the commercialization of fuel cells. Here, we use a Co-modified montmorillonite (Co-MMT) as a flat template to prepare Co- and N-doped nanocarbon ORR catalysts derived from carbonization of polyaniline...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5321638/ https://www.ncbi.nlm.nih.gov/pubmed/28235379 http://dx.doi.org/10.1186/s11671-016-1804-z |
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author | Guo, Chaozhong Wu, Youcheng Li, Zhongbin Liao, Wenli Sun, Lingtao Wang, Chao Wen, Bixia Li, Yanrong Chen, Changguo |
author_facet | Guo, Chaozhong Wu, Youcheng Li, Zhongbin Liao, Wenli Sun, Lingtao Wang, Chao Wen, Bixia Li, Yanrong Chen, Changguo |
author_sort | Guo, Chaozhong |
collection | PubMed |
description | The design of noble-metal-free catalysts for oxygen reduction reaction (ORR) is very important to the commercialization of fuel cells. Here, we use a Co-modified montmorillonite (Co-MMT) as a flat template to prepare Co- and N-doped nanocarbon ORR catalysts derived from carbonization of polyaniline at controlled temperatures. The use of flat template can hinder the agglomeration of polyaniline during pyrolysis process and optimize the N-rich active site density on the surface. The addition of transition metal Co in the flat MMT template can largely promote the formation of Co–N sites in prepared catalyst, facilitating the effective improvement of catalytic activity towards the ORR with a direct four-electron transfer pathway. The excellent ORR activity may be mainly attributed to high contents of graphitic N, pyridinic-N, and Co-N configurations. This study opens a new way to rationally design cheap and active ORR catalysts by using simple flat compound as a direct template. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s11671-016-1804-z) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-5321638 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-53216382017-03-07 The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template Guo, Chaozhong Wu, Youcheng Li, Zhongbin Liao, Wenli Sun, Lingtao Wang, Chao Wen, Bixia Li, Yanrong Chen, Changguo Nanoscale Res Lett Nano Express The design of noble-metal-free catalysts for oxygen reduction reaction (ORR) is very important to the commercialization of fuel cells. Here, we use a Co-modified montmorillonite (Co-MMT) as a flat template to prepare Co- and N-doped nanocarbon ORR catalysts derived from carbonization of polyaniline at controlled temperatures. The use of flat template can hinder the agglomeration of polyaniline during pyrolysis process and optimize the N-rich active site density on the surface. The addition of transition metal Co in the flat MMT template can largely promote the formation of Co–N sites in prepared catalyst, facilitating the effective improvement of catalytic activity towards the ORR with a direct four-electron transfer pathway. The excellent ORR activity may be mainly attributed to high contents of graphitic N, pyridinic-N, and Co-N configurations. This study opens a new way to rationally design cheap and active ORR catalysts by using simple flat compound as a direct template. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s11671-016-1804-z) contains supplementary material, which is available to authorized users. Springer US 2017-02-22 /pmc/articles/PMC5321638/ /pubmed/28235379 http://dx.doi.org/10.1186/s11671-016-1804-z Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Nano Express Guo, Chaozhong Wu, Youcheng Li, Zhongbin Liao, Wenli Sun, Lingtao Wang, Chao Wen, Bixia Li, Yanrong Chen, Changguo The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title | The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title_full | The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title_fullStr | The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title_full_unstemmed | The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title_short | The Oxygen Reduction Electrocatalytic Activity of Cobalt and Nitrogen Co-doped Carbon Nanocatalyst Synthesized by a Flat Template |
title_sort | oxygen reduction electrocatalytic activity of cobalt and nitrogen co-doped carbon nanocatalyst synthesized by a flat template |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5321638/ https://www.ncbi.nlm.nih.gov/pubmed/28235379 http://dx.doi.org/10.1186/s11671-016-1804-z |
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