BROWSE

Related Researcher

Author

Kim, Guntae
GUNS Lab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, metal-air batteries, ceramic membranes, PEMFC

ITEM VIEW & DOWNLOAD

High redox and performance stability of layered SmBa0.5Sr 0.5Co1.5Cu0.5O5+δ perovskite cathodes for intermediate-temperature solid oxide fuel cells

Cited 6 times inthomson ciCited 0 times inthomson ci
Title
High redox and performance stability of layered SmBa0.5Sr 0.5Co1.5Cu0.5O5+δ perovskite cathodes for intermediate-temperature solid oxide fuel cells
Author
Jun, AreumShin, JeeyoungKim, Guntae
Keywords
ELECTRICAL-PROPERTIES; ELECTROCHEMICAL PROPERTIES; THERMAL-EXPANSION; SOFC; ELECTROLYTE; DIFFUSION; SITE
Issue Date
201312
Publisher
ROYAL SOC CHEMISTRY
Citation
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.15, no.45, pp.19906 - 19912
Abstract
Cobalt-containing cathodes often encounter problems such as high thermal expansion coefficients (TEC) and poor stability, making them unsuitable for practical use as cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). This study focuses on the effects of Cu doping in the Co site of SmBa0.5Sr0.5Co2O5+δ in terms of structural characteristics, electrical properties, electrochemical performance, redox properties, and performance stability as an IT-SOFC cathode material. The TEC value of a SmBa0.5Sr0.5Co 1.5Cu0.5O5+δ (SBSCCu50) sample is 12.8 × 10-6 K-1, which is lower than that (13.7 × 10-6 K-1) of a SmBa0.5Sr0.5Co 2O5+δ (SBSCO) sample at 700 °C. SBSCCu50 showed higher redox stability at lower p(O2) and a more stable cell power output while retaining desirable electrochemical performance, as compared with SBSCO. SBSCCu50 displayed reduced TEC values and enhanced redox and performance stability, as well as satisfactory electrical properties and electrochemical performance under typical fuel cell operating conditions. The results indicate that SBSCCu50 is a promising material as a cathode for IT-SOFCs.
URI
Go to Link
DOI
http://dx.doi.org/10.1039/c3cp53883d
ISSN
1463-9076
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU