Journal article

Image analysis of the porous yttria-stabilized zirconia (YSZ) structure for a lanthanum ferrite-impregnated solid oxide fuel cell (SOFC) electrode

C Ni, M Cassidy, JTS Irvine

Journal of the European Ceramic Society | Published : 2018

Abstract

Image analysis and quantification were performed on porous scaffolds for building SOFC cathodes using the two types of YSZ powders. The two powders (U1 and U2) showed different particle size distribution and sinterability at 1300 °C. AC impedance on symmetrical cells was used to evaluate the performance of the electrode impregnated with 35-wt.% La Sr FeO . For example, at 700 °C, the electrode from U2 powder shows a polarization resistance (R ) of 0.21 Ω cm , and series resistance (R ) of 8.5 Ω cm for an YSZ electrolyte of 2-mm thickness, lower than the electrode from U1 powder (0.25 Ω cm for R and 10 Ω cm for R ) does. The quantitative study on image of the sintered scaffold indicates t..

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