N-doped porous carbon from Sargassum spp. As efficient metal-free electrocatalysts for O2 reduction in alkaline fuel cells

dc.creatorKEHILA YEHUDA PEREZ SALCEDO
dc.creatorXuan Shi
dc.creatorArunachala Nadar Mada Kannan
dc.creatorGLISERIO ROMELI BARBOSA POOL
dc.creatorPatricia Quintana Owen
dc.creatorBeatriz Escobar Morales
dc.date2019
dc.date.accessioned2023-07-21T19:18:38Z
dc.date.available2023-07-21T19:18:38Z
dc.identifierhttp://cicy.repositorioinstitucional.mx/jspui/handle/1003/1543
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7737103
dc.descriptionThis work reports the synthesis of N-doped porous carbon (NPC) with a high surface area from Sargassum spp. as a low-cost alternative for electrocatalyst production for the oxygen reduction reaction (ORR). Sargassum spp. was activated with potassium hydroxide at different temperatures (700, 750, and 800 °C) and then doped with pyridine (N700, N750, and N800). As a result of the activation process, the 800 °C sample showed a high surface area (2765 m 2 g −1 ) and good onset potential (0.870 V) and current density (4.87 mA cm −2 ). The ORR performance of the electrocatalysts in terms of their current density was N800 > N750 > N700 > 750 > 800 > 700, while the onset potential decreased in the following order: N800 > 800 > 750 > 700 > N700 > N750. The fuel cell performance of the membrane electrode assembly (MEA) prepared with electrocatalyst synthesized at 750 °C and doped with pyridine was 12.72 mW cm −2 , which was close to that from Pt/C MEA on both the anode and cathode (14.42 mW cm −2 ). These results indicate that NPCs are an alternative to the problem of Sargassum spp. accumulation in the Caribbean due to their high efficiency as electrocatalysts for ORR.
dc.formatapplication/pdf
dc.languageeng
dc.relationinfo:eu-repo/semantics/datasetDOI/10.3390/en12030346
dc.relationcitation:Pérez-Salcedo, K. Y., Shi, X., Kannan, A. M., Barbosa, R., Quintana, P., & Escobar, B. (2019). N-Doped Porous Carbon from Sargassum spp. as Efficient Metal-Free Electrocatalysts for O 2 Reduction in Alkaline Fuel Cells. Energies, 12(3), 1-15.
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.sourceEnergies, 12(3), 1-15, 2019.
dc.subjectinfo:eu-repo/classification/Autores/N-DOPED POROUS CARBON
dc.subjectinfo:eu-repo/classification/Autores/SARGASSUM SPP.
dc.subjectinfo:eu-repo/classification/Autores/OXYGEN REDUCTION REACTION
dc.subjectinfo:eu-repo/classification/Autores/ALKALINE FUEL CELL
dc.subjectinfo:eu-repo/classification/cti/7
dc.subjectinfo:eu-repo/classification/cti/7
dc.titleN-doped porous carbon from Sargassum spp. As efficient metal-free electrocatalysts for O2 reduction in alkaline fuel cells
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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