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Article

Nitrogen-Doped Superporous Activated Carbons as Electrocatalysts for the Oxygen Reduction Reaction

1
Department of Inorganic Chemistry and Materials Institute, University of Alicante, 03080 Alicante, Spain
2
Department of Physical Chemistry and Materials Institute, University of Alicante, 03080 Alicante, Spain
*
Author to whom correspondence should be addressed.
Materials 2019, 12(8), 1346; https://doi.org/10.3390/ma12081346
Received: 3 March 2019 / Revised: 13 April 2019 / Accepted: 23 April 2019 / Published: 25 April 2019
(This article belongs to the Special Issue Advanced Carbon Materials For Catalytical Applications)
Nitrogen-containing superporous activated carbons were prepared by chemical polymerization of aniline and nitrogen functionalization by organic routes. The resulting N-doped carbon materials were carbonized at high temperatures (600–800 °C) in inert atmosphere. X-ray Photoelectron Spectroscopy (XPS) revealed that nitrogen amount ranges from 1 to 4 at.% and the nature of the nitrogen groups depends on the treatment temperature. All samples were assessed as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline solution (0.1 M KOH) in order to understand the role of well-developed microporosity as well as the different nitrogen functionalities on the electrocatalytic performance in ORR. It was observed that nitrogen groups generated at high temperatures were highly selective towards the water formation. Among the investigated samples, polyaniline-derived activated carbon carbonized at 800 °C displayed the best performance (onset potential of 0.88 V versus RHE and an electron transfer number of 3.4), which was attributed to the highest concentration of N–C–O sites. View Full-Text
Keywords: porous carbons; polyaniline; nitrogen functionalization; electrocatalysis; oxygen reduction reaction porous carbons; polyaniline; nitrogen functionalization; electrocatalysis; oxygen reduction reaction
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MDPI and ACS Style

Mostazo-López, M.J.; Salinas-Torres, D.; Ruiz-Rosas, R.; Morallón, E.; Cazorla-Amorós, D. Nitrogen-Doped Superporous Activated Carbons as Electrocatalysts for the Oxygen Reduction Reaction. Materials 2019, 12, 1346. https://doi.org/10.3390/ma12081346

AMA Style

Mostazo-López MJ, Salinas-Torres D, Ruiz-Rosas R, Morallón E, Cazorla-Amorós D. Nitrogen-Doped Superporous Activated Carbons as Electrocatalysts for the Oxygen Reduction Reaction. Materials. 2019; 12(8):1346. https://doi.org/10.3390/ma12081346

Chicago/Turabian Style

Mostazo-López, María J., David Salinas-Torres, Ramiro Ruiz-Rosas, Emilia Morallón, and Diego Cazorla-Amorós. 2019. "Nitrogen-Doped Superporous Activated Carbons as Electrocatalysts for the Oxygen Reduction Reaction" Materials 12, no. 8: 1346. https://doi.org/10.3390/ma12081346

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