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http://cicy.repositorioinstitucional.mx/jspui/handle/1003/1543| N-doped porous carbon from Sargassum spp. As efficient metal-free electrocatalysts for O2 reduction in alkaline fuel cells | |
| KEHILA YEHUDA PEREZ SALCEDO Xuan Shi Arunachala Nadar Mada Kannan GLISERIO ROMELI BARBOSA POOL Patricia Quintana Owen Beatriz Escobar Morales | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| 10.3390/en12030346 | |
| N-DOPED POROUS CARBON SARGASSUM SPP. OXYGEN REDUCTION REACTION ALKALINE FUEL CELL | |
| This 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. | |
| 2019 | |
| Artículo | |
| Energies, 12(3), 1-15, 2019. | |
| Inglés | |
| 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. | |
| INGENIERÍA Y TECNOLOGÍA | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | Artículos de Investigación Arbitrados |
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