Electrospinning is employed to fabricate Sm0.5Sr0.5CoO3-δ (SSC) nanofibers. One-dimensional nanofiber-based Sm0.5Sr0.5CoO3-δ-Gd0.2Ce0.8O1.9 (SSC-GDC) composite cathodes for solid oxide fuel cell (SOFC) are fabricated by infiltrating the GDC precursor solution into the SSC nanofibers scaffolds. Optimal polarization resistance of 0.038 Ω cm2 at 650 °C is achieved when SSC: GDC mass ratio of 1: 0.869 for infiltration is used. This value is 2.6 times smaller than the polarization resistance of nanoparticle-based SSC-GDC composite under identical testing conditions. Microstructural features of the SSC-GDC interface further support the cell performance results. The nanofiber-based SSC-GDC composite is proved to be an excellent candidate as cathode material for intermediate temperature SOFCs.
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Fan et al. (2013) studied this question.
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