Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte

A novel VN/C nanostructure consisting of VN nanoparticles and graphite-dominant carbon layers is synthesized by nitridation of V(2)O(5) using melamine as reductant under inert atmosphere. High crystalline VN nanoparticles are observed to be uniformly distributed in carbon layers with an average size...

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Autores principales: Huang, K., Bi, K., Liang, C., Lin, S., Zhang, R., Wang, W. J., Tang, H. L., Lei, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477409/
https://www.ncbi.nlm.nih.gov/pubmed/26100367
http://dx.doi.org/10.1038/srep11351
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author Huang, K.
Bi, K.
Liang, C.
Lin, S.
Zhang, R.
Wang, W. J.
Tang, H. L.
Lei, M.
author_facet Huang, K.
Bi, K.
Liang, C.
Lin, S.
Zhang, R.
Wang, W. J.
Tang, H. L.
Lei, M.
author_sort Huang, K.
collection PubMed
description A novel VN/C nanostructure consisting of VN nanoparticles and graphite-dominant carbon layers is synthesized by nitridation of V(2)O(5) using melamine as reductant under inert atmosphere. High crystalline VN nanoparticles are observed to be uniformly distributed in carbon layers with an average size of ca13.45 nm. Moreover, the electrocatalytic performance of VN/C towards oxygen reduction reaction (ORR) in alkaline electrolyte is fascinating. The results show that VN/C has a considerable ORR activity, including a 75 percent value of the diffusion-limited current density and a 0.11 V smaller value about the onset potential with respect to Pt/C catalyst. Moreover, the excellent methanol-tolerance performance of VN/C has also been verified with 3 M methanol. Combined with the competitive prices, this VN/C nanocomposite can serve as an appropriate non-precious methanol-tolerant ORR catalyst for alkaline fuel cells.
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spelling pubmed-44774092015-07-13 Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte Huang, K. Bi, K. Liang, C. Lin, S. Zhang, R. Wang, W. J. Tang, H. L. Lei, M. Sci Rep Article A novel VN/C nanostructure consisting of VN nanoparticles and graphite-dominant carbon layers is synthesized by nitridation of V(2)O(5) using melamine as reductant under inert atmosphere. High crystalline VN nanoparticles are observed to be uniformly distributed in carbon layers with an average size of ca13.45 nm. Moreover, the electrocatalytic performance of VN/C towards oxygen reduction reaction (ORR) in alkaline electrolyte is fascinating. The results show that VN/C has a considerable ORR activity, including a 75 percent value of the diffusion-limited current density and a 0.11 V smaller value about the onset potential with respect to Pt/C catalyst. Moreover, the excellent methanol-tolerance performance of VN/C has also been verified with 3 M methanol. Combined with the competitive prices, this VN/C nanocomposite can serve as an appropriate non-precious methanol-tolerant ORR catalyst for alkaline fuel cells. Nature Publishing Group 2015-06-23 /pmc/articles/PMC4477409/ /pubmed/26100367 http://dx.doi.org/10.1038/srep11351 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Huang, K.
Bi, K.
Liang, C.
Lin, S.
Zhang, R.
Wang, W. J.
Tang, H. L.
Lei, M.
Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title_full Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title_fullStr Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title_full_unstemmed Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title_short Novel VN/C nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
title_sort novel vn/c nanocomposites as methanol-tolerant oxygen reduction electrocatalyst in alkaline electrolyte
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4477409/
https://www.ncbi.nlm.nih.gov/pubmed/26100367
http://dx.doi.org/10.1038/srep11351
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