2026-05-04T22:54:41Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/110962025-11-26T01:05:34Zcom_10259_5822com_10259_5086com_10259_2604col_10259_5823

Borghei, Maryam ed7b19dc-cf62-49ad-a5d6-c8af3a3c93e9 600 Kanninen, Petri 66b6e255-d49a-4e39-b733-d6c592aa90d6 Lundahl, Meri 58fee5c1-bbc1-4994-9feb-582bc9454f8d Susi, Toma f71318c4-1b70-4c10-892f-f41da3a696dc Sainio, Jani 9419d93d-63a3-476b-80f9-f4f147e0f5af Anoshkin, Ilya 9082ff9f-82ec-48a9-8a26-70de9914b578 Nasibulin, Albert G. 857cce10-f1a0-4340-92d5-1df9522f62d1 600 Kallio, Tanja 56206d29-06db-4c59-bcfa-4bd93ff8262c Tammeveski, Kaido 27ed9283-8fce-41df-ba72-08be94b8b36c Kauppinen, Esko I. 353d6723-bc02-434b-9c00-e344248dc326 600 Ruiz Fernández, Virginia 858 600 0000-0002-0466-0634 2025-11-25T09:19:23Z 2025-11-25T09:19:23Z 2014-10 0926-3373 https://hdl.handle.net/10259/11096 10.1016/j.apcatb.2014.04.027 Nitrogen-containing few-walled carbon nanotubes (N-FWCNTs) with very low nitrogen content (0.56 at.%) were obtained by a process involving the coating of acid functionalized FWCNTs with polyaniline (PANI) followed by pyrolysis at high temperatures. The resulting N-FWCNTs exhibited a remarkable electrocatalytic activity for the oxygen reduction reaction (ORR), despite significantly lower nitrogen content than previously reported in literature. The N-FWCNTs performed on par or better than Pt-C in the cathode of an alkaline direct methanol fuel cell, corroborating the ORR activity observed in the electrochemical cell and exhibiting a higher methanol tolerance. Interestingly, N-FWCNTs showed a high activity for the hydrogen evolution reaction and for the hydrogen peroxide decomposition, suggesting that the active sites involved in ORR can simultaneously catalyze other reactions. This unprecedentedly high activity for such a low N-content can be explained by the exceptional accessibility for the catalytic sites located in open and porous N-doped layer surrounding the FWCNT core, along with the minimization of inactive inner volume and mass compared to larger nitrogen doped multiwalled tubes. The authors would like thank the following instances for funding: Academy of Finland (12263636). Aalto University Starting Grant and MIDE (GRACE) and Alfred Kordelin Foundation. This work made use of the Aalto University Nanomicroscopy Center (Aalto-NMC) premises. M.B. is also thankful to Dr. Ivar Kruusenberg for the kind help with experiments in the laboratory of Tartu University. We also acknowledge support by the Estonian Research Council (IUT20-16). application/pdf eng Elsevier Applied Catalysis B: Environmental. 2014, V. 158–159, p. 233-241 https://doi.org/10.1016/j.apcatb.2014.04.027 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Nitrogen-doped Few-walled carbon nanotubes Oxygen reduction reaction Alkaline fuel cell Electrocatálisis Electrocatalysis High oxygen reduction activity of few-walled carbon nanotubes with low nitrogen content info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Applied Catalysis B: Environmental 158-159 233 241 THUMBNAIL Borghei-acbe_2014.pdf.jpg Borghei-acbe_2014.pdf.jpg IM Thumbnail image/jpeg 4171 https://riubu.ubu.es/bitstream/10259/11096/4/Borghei-acbe_2014.pdf.jpg 83858cf654dbb3508a56634699e3d539 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/11096/3/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/11096/2/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 2 ORIGINAL Borghei-acbe_2014.pdf Borghei-acbe_2014.pdf application/pdf 1668043 https://riubu.ubu.es/bitstream/10259/11096/1/Borghei-acbe_2014.pdf 07a40a8ac0cf249f5b1e2cbb6c5a40e0 MD5 1 10259/11096 oai:riubu.ubu.es:10259/11096 2025-11-26 02:05:34.983 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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