Evaluation of GdBaCo2O5 + δ as Cathode Material for Doped Lanthanum Gallate Electrolyte IT-SOFCs

The layered perovskite GdBaCo2O5 + δ (GBCO), recently proposed for intermediate temperature solid oxide fuel cell applications, was investigated and compared with Ba0.5Sr0.5Co0.8Fe0.2O3 – δ (BSCF) cathode material using La0.9A0.1Ga0.8Mg0.2O2.85 (A=Sr,Ba) as electrolytes. Area‐specific resistance was...

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Bibliographic Details
Published in:Fuel cells (Weinheim an der Bergstrasse, Germany) Germany), 2008-10, Vol.8 (5), p.351-359
Main Authors: Peña-Martínez, J., Tarancón, A., Marrero-López, D., Ruiz-Morales, J. C., Núñez, and P.
Format: Article
Language:English
Subjects:
Area-specific resistance
BSCF
Fuel cell tests
GBCO
LSGM
SOFC
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Summary:The layered perovskite GdBaCo2O5 + δ (GBCO), recently proposed for intermediate temperature solid oxide fuel cell applications, was investigated and compared with Ba0.5Sr0.5Co0.8Fe0.2O3 – δ (BSCF) cathode material using La0.9A0.1Ga0.8Mg0.2O2.85 (A=Sr,Ba) as electrolytes. Area‐specific resistance was measured by impendance spectroscopy in symmetrical cells. The cobaltites were prepared by a modified citrate sol–gel route and tested as cathode materials for doped lanthanum gallate‐based cells using dry H2 as fuel and air as oxidant, rendering power density values of 180 and 240 mW cm–2 at 1,073 K (1 mm thick pellets) for GBCO and BSCF fuel cells, respectively.
ISSN:1615-6846
1615-6854
DOI:10.1002/fuce.200800026