Structural, electrical and electrochemical characteristics of La0.1Sr0.9Co1-xNbxO3-delta as a cathode material for intermediate temperature solid oxide fuel cells
Cited 0 times inCited 0 times in
- Structural, electrical and electrochemical characteristics of La0.1Sr0.9Co1-xNbxO3-delta as a cathode material for intermediate temperature solid oxide fuel cells
- Yoo, Seonyoung; Kim, Jiyoun; Song, Seung Yoon; Lee, Dong Woo; Shin, Jeeyoung; Ok, Kang Min; Kim, Guntae
- PERFORMANCE; PEROVSKITE; LA0.6SR0.4COO3-DELTA; SM0.5SR0.5COO3; SOFCS; PR; ND; LA; LN
- Issue Date
- ROYAL SOC CHEMISTRY
- RSC ADVANCES, v.4, no.36, pp.18710 - 18717
- The perovskite-oxides, such as (La, Sr)CoO3, have received a large amount of 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, and electrochemical properties of La0.1Sr0.9Co1-xNbxO 3-δ (x = 0, 0.1, 0.15, and 0.2) cathodes under IT-SOFC operating conditions. Nb doping significantly improves the structural stability and electrochemical performance of La0.1Sr0.9Co 1-xNbxO3-δ (LSCNbx) oxides compared to undoped La0.1Sr0.9CoO3-δ (LSC). At a given temperature, the electrical conductivity decreases with further increases of the Nb doping content. The electrochemical performance of LSCNbx-GDC cathodes is measured using an LSCNbx-GDC/GDC/ Ni-GDC anode supported cell. For LSCNbx (x = 0.1), the maximum power density of a single cell is 1.478 W cm-2 at 600 °C. The Nb doped LSCNbx (x = 0.1) perovskite is recommended, considering its high power density and structural stability as an IT-SOFC cathode material.
- ; Go to Link
Appears in Collections:
- ECHE_Journal Papers
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.