An intermediate-temperature solid oxide fuel cell with electrospun nanofiber cathode
2019/11/27 21:19:35
Zhi, M. J., S. Lee, N. Miller, N. H. Menzler and N. Q. Wu
Lanthanum strontium cobalt ferrite (LSCF) nanofibers have been fabricated by the electrospinning method and used as the cathode of an intermediate-temperature solid oxide fuel cell (SOFC) with yttria-stabilized zirconia (YSZ) electrolyte. The three-dimensional nanofiber network cathode has several advantages: (i) high porosity; (ii) high percolation; (iii) continuous pathway for charge transport; (iv) good thermal stability at the operating temperature; and (v) excellent scaffold for infiltration. The fuel cell with the monolithic LSCF nanofiber cathode exhibits a power density of 0.90 W cm(-2) at 1.9 A cm(-2) at 750 degrees C. The electrochemical performance of the fuel cell has been further improved by infiltration of 20 wt% of gadolinia-doped ceria (GDC) into the LSCF nanofiber cathode. The fuel cell with the LSCF-20% GDC composite cathode shows a power density of 1.07 W cm(-2) at 1.9 A cm(-2) at 750 degrees C. The results obtained show that one-dimensional nanostructures such as nanofibers hold great promise as electrode materials for intermediate-temperature SOFCs.
- Journal: Energy & Environmental Science
- Volume: 5
- Issue: 5
- Pages: 7066-7071
- ISSN: 1754-5692
- DOI: 10.1039/c2ee02619h
- Year: 2012
- Number:
- Type:
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