000165227 001__ 165227
000165227 005__ 20251219174251.0
000165227 0247_ $$2doi$$a10.1016/j.cej.2025.171198
000165227 0248_ $$2sideral$$a147024
000165227 037__ $$aART-2025-147024
000165227 041__ $$aeng
000165227 100__ $$aPakrieva, Ekaterina$$uUniversidad de Zaragoza
000165227 245__ $$a3-component (N, Fe, Co) atomically dispersed ORR catalysts prepared by laser-driven decomposition of organic precursors
000165227 260__ $$c2025
000165227 5060_ $$aAccess copy available to the general public$$fUnrestricted
000165227 5203_ $$aThe sluggish kinetics of the oxygen reduction reaction (ORR) remain a key bottleneck for the commercialization of proton exchange membrane fuel cells (PEMFCs), driving the search for efficient, non-precious metal catalysts. Herein, we present a laser-assisted pyrolysis strategy for the synthesis of nitrogen-doped carbon (NC) materials, both metal-free and containing atomically dispersed Fe and Co, using aerosolized phthalocyanine precursors and a near-instantaneous rapid decomposition under a high-energy laser beam, while preventing metal aggregation. A single-step post-synthetic thermal activation under an NH₃/N₂ atmosphere further tailors the textural and surface properties, without requiring ammonia co-feeding during laser pyrolysis, acid etching, or multiple treatments, marking a significant improvement over our previously reported single atom (Fe-N/C) protocols. The resulting Fe_Co/NC_tr catalyst exhibits high specific surface area, enhanced microporosity, improved graphitization, and increased abundance of electrochemically beneficial nitrogen sites. Compared to our earlier reported Fe–N/C catalysts, Fe_Co/NC_tr delivers significantly higher limiting current densities and enhanced durability in alkaline media. Overall, the developed Fe_Co/NC catalyst exhibits good ORR catalytic activity and outstanding long-term stability in alkaline media, comparable to the state-of-the-art commercial Pt/C catalysts. Cyanide poisoning tests confirm the essential role of atomically dispersed Fe2+ and Co2+ as active ORR sites.
000165227 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/AEI/PID2020-114926RB-I00$$9info:eu-repo/grantAgreement/ES/AEI/PID2023-146481OB-I00$$9info:eu-repo/grantAgreement/ES/DGA/T03-23R$$9info:eu-repo/grantAgreement/ES/UZ-DGA/T57-23R$$9info:eu-repo/grantAgreement/ES/MICINN/CNS2022-135911$$9info:eu-repo/grantAgreement/ES/MICINN/JDC2022-049007-I$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-139671OB-I00
000165227 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000165227 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000165227 700__ $$aHernandez-Ferrer, Javier
000165227 700__ $$aMartinez, Gema
000165227 700__ $$0(orcid)0000-0001-5512-0075$$aBalas, Francisco$$uUniversidad de Zaragoza
000165227 700__ $$0(orcid)0000-0001-8158-1270$$aGarcía-Bordeje, Enrique
000165227 700__ $$0(orcid)0000-0002-3134-8566$$aAnson-Casaos, Alejandro
000165227 700__ $$aSimonelli, Laura
000165227 700__ $$0(orcid)0000-0002-0047-1772$$aBartolome, Fernando
000165227 700__ $$0(orcid)0000-0002-8654-7386$$aBenito, Ana M.
000165227 700__ $$aMaser, Wolfgang K.
000165227 700__ $$0(orcid)0000-0002-4546-4111$$aHueso, Jose L.$$uUniversidad de Zaragoza
000165227 700__ $$0(orcid)0000-0002-8701-9745$$aSantamaria, Jesus$$uUniversidad de Zaragoza
000165227 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000165227 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000165227 773__ $$g526 (2025), 171198 [13 pp.]$$pChem. eng. j.$$tChemical Engineering Journal$$x1385-8947
000165227 8564_ $$s5354730$$uhttps://zaguan.unizar.es/record/165227/files/texto_completo.pdf$$yVersión publicada
000165227 8564_ $$s2407841$$uhttps://zaguan.unizar.es/record/165227/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000165227 909CO $$ooai:zaguan.unizar.es:165227$$particulos$$pdriver
000165227 951__ $$a2025-12-19-14:43:24
000165227 980__ $$aARTICLE