Investigation of electrospun Ba0.5Sr0.5Co0.8Fe0.2O3-delta-Gd0.1Ce0.9O1.95 cathodes for enhanced interfacial adhesion

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 119
  • Download : 0
Fibrous Ba0.5Sr0.5Co0.8Fe0.2O3-delta-Gd0.2Ce0.9O1.95 (BSCF-GDC) composite cathodes are fabricated by a facile electrospinning method. However, the electropun BSCF-GDC cathode shows poor adhesion to a GDC electrolyte because of the high shrinkage rate of the electrospun BSCF-GDC cathode during sintering. To solve this adhesion issue, mixed BSCF fiber-GDC powder cathode is investigated. As a result, mixed BSCF fiber-GDC powder cathode with an enhanced adhesion is successfully fabricated. This improvement can be attributed to the modified microstructure with the GDC powder that joins the BSCF fibers to the GDC electrolyte at the cathode and electrolyte interface. The polarization resistance of the mixed BSCF fiber-GDC powder cathode is 0.10 Omega cm(2), which is lower than 0.13 Omega cm(2) of conventional BSCF-GDC powder cathode at 700 degrees C. It is attributable to the improved oxygen gas and lattice oxygen diffusion, and the surface exchange of the mixed BSCF fiber-GDC powder cathode. The single cell with a mixed BSCF fiber-GDC powder cathode show 500 mW cm(-2) at 700 degrees C, which is 25% higher than conventional BSCF-GDC powder cathode. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2018-11
Language
English
Article Type
Article
Citation

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.43, no.46, pp.21535 - 21546

ISSN
0360-3199
DOI
10.1016/j.ijhydene.2018.09.130
URI
http://hdl.handle.net/10203/247626
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0