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in creator/contributor: "Yamahara, Keiji"

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Catalyst-infiltrated supporting cathode for thin-film SOFCs

The fabrication and electrochemical performance of co-fired,LSM-SYSZ [i.e., La0.65Sr0.30MnO3 (LSM) - (Sc2O3)0.1(Y2O3)0.01(ZrO2)0.89] supported thin-film cells were examined using humidified hydrogen as a fuel. Co-firing of bi-layers and tri-layers was successful at 1250 C by optimizing the amount of carbon pore formers. A power density of a factor of 2.5 higher than that recently reported for the same type of cell at 800 C [3] was obtained for a cell with cobalt infiltration into the supporting… more

Date: April 12, 2004

Creator: Yamahara, Keiji; Jacobson, Craig P.; Visco, Steven J. & De Jonghe,Lutgard C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Ionic conductivity of stabilized zirconia networks in compositeSOFC electrodes

The effective oxygen conductivities in the zirconia networks of porous LSM-YSZ and LSM-SYSZ composites [i.e. La0.85Sr0.15MnO3(Y2O3)0.08(ZrO2)0.92 and La0.85Sr0.15MnO3(c2O3)0.1(Y2O3)0.01(ZrO2)0.89,respectively] were evaluated by an AC impedance technique using specimens in which LSM was removed by hydrochloric acid leaching. The oxygen conductivities of porous YSZ and SYSZ alone followed a Koh-Fortini relationship. LSM-containing zirconia network conductivities were additionally decreased by the… more

Date: March 1, 2004

Creator: Yamahara, Keiji; Sholklapper, Tal Z.; Jacobson, Craig P.; Visco,Steven J. & De Jonghe, Lutgard C.