Development of Micro-Tubular SOFCs with an Improved Performance via Nano-Ag Impregnation for Intermediate Temperature Operation

Electrochemically catalytic Ag particles in nano-range were in situ incorporated into the 15 um thick cathode consisting of La0.6Sr0.4Co0.2Fe0.8O3-d and Ce0.8Gd0.2O1.9 (GDC) via a citrate infiltration method. The Ag-impregnation route ensures very homogeneous particle dispersion and good adhesion of...

Full description

Saved in:
Bibliographic Details
Published inECS transactions Vol. 7; no. 1; pp. 615 - 622
Main Authors Liu, Yu, Hashimoto, Shin-Ichi, Nishino, Hanako, Mori, Masashi, Funahashi, Yoshihiro, Fijishiro, Yoshinobu, Hirano, Atsushi, Imanishi, Nobuyuki, Takeda, Yasuo
Format Journal Article
LanguageEnglish
Published 25.05.2007
Online AccessGet full text

Cover

More Information
Summary:Electrochemically catalytic Ag particles in nano-range were in situ incorporated into the 15 um thick cathode consisting of La0.6Sr0.4Co0.2Fe0.8O3-d and Ce0.8Gd0.2O1.9 (GDC) via a citrate infiltration method. The Ag-impregnation route ensures very homogeneous particle dispersion and good adhesion of Ag to the ceramic matrices. The functional cathode was successfully operated on the Ni-cermet-supported (ZrO2)0.89 (Sc2O3)0.1(CeO2)0.01 electrolyte with a GDC buffer layer under a micro-tubular configuration, producing maximum power density of 1.06 W cm-2 (1.43 A cm-2, 0.74 V), 0.98 W cm-2 (1.78 A cm- 2, 0.55 V), 0.49 W cm-2 (1.44 A cm-2, 0.34 V) at 650, 600, 550 {degree sign}C, respectively.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.2729144