Journal
NANO ENERGY
Volume 26, Issue -, Pages 90-99Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.05.001
Keywords
SOFC; Cathode; ORR; Electrospinning; Fuel cell; Fiber
Categories
Funding
- ARPAR-E REBELS Program
- U.S. Department of Energy [DE-AR0000502]
- U.S. National Science Foundation [DMR-1210792]
- Guangdong Innovative and Entrepreneurial Research Team Program [2014ZT05N200]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1210792] Funding Source: National Science Foundation
Ask authors/readers for more resources
Hollow nanofibers of PrBa0.5Sr0.5CO2O5+delta (PBSC), created by an electrospinning process, are assembled into a three dimensional (3D) fibrous porous electrode, providing facile pathways for gas transport and excellent electrical conductivity for efficient charge transfer and, thus, greatly enhancing the rate of oxygen reduction reactions (ORR), as confirmed by the small electrode polarization resistance and low activation energy. A simple geometric modeling suggests that an electrode with longer fibers tends to be more efficient in facilitating mass and charge transfer under the conditions studied. A solid oxide fuel cell based on this 3D fibrous cathode demonstrates a peak power density of 1.11 W cm(-2) at 550 degrees C when humidified H-2 was used as fuel and ambient air as oxidant. The fibrous architecture also shows excellent stability under the operating conditions. Further and in particular, the high-performance hollow-fiber electrodes are also applicable to other energy storage and conversion systems. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available