{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,10]],"date-time":"2026-02-10T18:13:47Z","timestamp":1770747227586,"version":"3.49.0"},"reference-count":52,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T00:00:00Z","timestamp":1599696000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004564","name":"Ministarstvo Prosvete, Nauke i Tehnolo\u0161kog Razvoja","doi-asserted-by":"publisher","award":["451-03-68\/2020-14\/200146"],"award-info":[{"award-number":["451-03-68\/2020-14\/200146"]}],"id":[{"id":"10.13039\/501100004564","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["IF\/01084\/2014\/CP1214\/CT0003"],"award-info":[{"award-number":["IF\/01084\/2014\/CP1214\/CT0003"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Molybdenum carbide (Mo2C)-based electrocatalysts were prepared using two different carbon supports, commercial carbon nanotubes (CNTs) and synthesised carbon xerogel (CXG), to be studied from the point of view of both capacitive and electrocatalytic properties. Cation type (K+ or Na+) in the alkaline electrolyte solution did not affect the rate of formation of the electrical double layer at a low scan rate of 10 mV s\u22121. Conversely, the different mobility of these cations through the electrolyte was found to be crucial for the rate of double-layer formation at higher scan rates. Molybdenum carbide supported on carbon xerogel (Mo2C\/CXG) showed ca. 3 times higher double-layer capacity amounting to 75 mF cm\u22122 compared to molybdenum carbide supported on carbon nanotubes (Mo2C\/CNT) with a value of 23 mF cm\u22122 due to having more than double the surface area size. The electrocatalytic properties of carbon-supported molybdenum carbides for the oxygen reduction reaction in alkaline media were evaluated using linear scan voltammetry with a rotating disk electrode. The studied materials demonstrated good electrocatalytic performance with Mo2C\/CXG delivering higher current densities at more positive onset and half-wave potential. The number of electrons exchanged during oxygen reduction reaction (ORR) was calculated to be 3, suggesting a combination of four- and two-electron mechanism.<\/jats:p>","DOI":"10.3390\/nano10091805","type":"journal-article","created":{"date-parts":[[2020,9,10]],"date-time":"2020-09-10T09:10:09Z","timestamp":1599729009000},"page":"1805","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Carbon-Supported Mo2C for Oxygen Reduction Reaction Electrocatalysis"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4362-7324","authenticated-orcid":false,"given":"Du\u0161an","family":"Mladenovi\u0107","sequence":"first","affiliation":[{"name":"Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia"}]},{"given":"Milica","family":"Vujkovi\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8155-8003","authenticated-orcid":false,"given":"Slavko","family":"Mentus","sequence":"additional","affiliation":[{"name":"Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia"},{"name":"Serbian Academy of Sciences and Arts, Kneza Mihaila 35, 11000 Belgrade, Serbia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7920-2638","authenticated-orcid":false,"given":"Diogo M. F.","family":"Santos","sequence":"additional","affiliation":[{"name":"CeFEMA, Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3161-9642","authenticated-orcid":false,"given":"Raquel P.","family":"Rocha","sequence":"additional","affiliation":[{"name":"Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7556-2858","authenticated-orcid":false,"given":"Cesar A.","family":"C. Sequeira","sequence":"additional","affiliation":[{"name":"CeFEMA, Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0395-8199","authenticated-orcid":false,"given":"Jose Luis","family":"Figueiredo","sequence":"additional","affiliation":[{"name":"Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"given":"Biljana","family":"\u0160ljuki\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia"},{"name":"CeFEMA, Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"332","DOI":"10.1038\/35104599","article-title":"Alternative energy technologies","volume":"414","author":"Dresselhaus","year":"2001","journal-title":"Nature"},{"key":"ref_2","first-page":"197","article-title":"Electrocatalysis","volume":"Volume 3","author":"Lipkowski","year":"1998","journal-title":"Frontiers in Electrochemistry"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"506","DOI":"10.1557\/mrs.2011.157","article-title":"Lithium-air and lithium-sulfur batteries","volume":"36","author":"Bruce","year":"2011","journal-title":"MRS Bull."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2172","DOI":"10.1039\/c1cs15228a","article-title":"Metal-air batteries: from oxygen reduction electrochemistry to cathode catalysts","volume":"41","author":"Cheng","year":"2012","journal-title":"Chem. 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