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

Electrochemical and redox studies of Sm0.5Sr0.5Co1-xNbx (x = 0, 0.1) as cathode materials in intermediate temperature-solid oxide fuel cells

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Electrochemical and redox studies of Sm0.5Sr0.5Co1-xNbx (x = 0, 0.1) as cathode materials in intermediate temperature-solid oxide fuel cells
Author
Kim, GuntaeYoo, SeonyoungJun, AreumShin, Jeeyoung
Issue Date
2013
Publisher
The Electrochemical Society
Citation
ECS Transactions, v.57, no.1, pp.1725 - 1731
Abstract
The perovskite-oxides, such as (La,Sr)CoO3 and (Ba,Sr)CoO3, have received much attention in recent years as cathode materials for intermediate temperature-solid oxide fuel cells (IT-SOFCs). In this study, we have investigated the structural, electrical, electrochemical, and redox properties of Sm0.5Sr0.5Co1-xNbxO3-δ (SSCNbx) cathodes under conditions relevant to IT-SOFC operation. The SSCNbx (x = 0, 0.1) oxides show gradually decreasing electrical conductivity with increasing Nb doping at the same temperature. The maximum power density of SSCNbx (x = 0.1) is lower than that of SSC; however, SSCNbx (x = 0.1) is more stable than SSC considering the thermodynamic behavior, as determined through redox isotherms. These results suggest that a Nb doped SSC perovskite is suitable, considering its high power density and reasonable redox stability, as an IT-SOFC cathode material.
URI
Go to Link
DOI
http://dx.doi.org/10.1149/05701.1725ecst
ISSN
1938-5862
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