Abstract
In this work we present a method for dispersing nano-sized Ce0.9Gd0.1O1.95 (GDC) particles at the GDC electrolyte and Ni-GDC anode interface. Dispersed nanosized particles were deposited to form an anode functional layer (AFL). Anode supports were prepared by tape casting of large micron-sized NiO powder and sub micron-sized GDC powder without pore former. For the cathode a La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF)-GDC composite was used. Without an AFL the open circuit potential (OCP) and the maximum power density were 0.677 V and 286 mW/cm2, respectively, at 650 {degree sign}C. With an AFL the OCP and the maximum power density increased to 0.796 V and 486mW/cm2, respectively, at the same temperature. Two point probe impedance measurements revealed that the AFL fabricated by the proposed method not only increased the OCP but also reduced the anode polarization. The effect of AFL pre-sintering is also presented.
Published Version
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