Scaffold Infiltrated Cathodes for Low-Temperature Solid Oxide Fuel Cells.

Autor:	Robinson IA; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Materials Science & Engineering, University of Maryland, College Park, Maryland 20742, United States., Horlick SA; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Chemical and Biomolecular & Engineering, University of Maryland, College Park, Maryland 20742, United States., Huang YL; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Materials Science & Engineering, University of Maryland, College Park, Maryland 20742, United States., Lam AP; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Chemical and Biomolecular & Engineering, University of Maryland, College Park, Maryland 20742, United States., Ganti SS; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Chemical and Biomolecular & Engineering, University of Maryland, College Park, Maryland 20742, United States., Wachsman ED; Maryland Energy Innovation Institute, University of Maryland, College Park, Maryland 20742, United States.; Department of Materials Science & Engineering, University of Maryland, College Park, Maryland 20742, United States.; Department of Chemical and Biomolecular & Engineering, University of Maryland, College Park, Maryland 20742, United States.
Jazyk:	angličtina
Zdroj:	ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2024 Jul 31; Vol. 16 (30), pp. 39225-39231. Date of Electronic Publication: 2024 Jul 22.
DOI:	10.1021/acsami.4c04627
Abstrakt:	Lowering the operating temperature of solid oxide fuel cells (SOFCs) and electrolysis cells (SOECs) to reduce system cost and increase lifetime is the key to widely deploy this highly efficient energy technology, but the high cathode polarization losses at low temperatures limit overall cell performance. Here we demonstrate that by engineering a universal ceria-based scaffold with infiltrated nanoscale electrocatalysts, a low cathode polarization <0.25 Ω·cm 2 with remarkably high performance 1 W/cm 2 at 550 °C is achieved. The combination of low processing and operating temperature restrains the nanosized electrocatalysts, not only allowing fast oxygen transport but also providing an essential electronically connective network to facilitate electrochemical reactions without requiring the high-temperature processing of a separate cathode layer. Moreover, excellent SOFC durability was demonstrated for over 500 h. This work shows a promising pathway to reduce processing/system costs with all scalable ceramic processing techniques for the future development of low-temperature SOFCs and SOECs.
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu