Abstract
The neodymium-deficient nickelate Nd 1.95NiO 4+ δ , mixed conducting K 2NiF 4-type oxide, was evaluated as cathode for solid oxide fuel cells. The electrochemical properties were investigated on planar Ni–YSZ anode-supported SOFC based on co-tape casted and co-fired HTceramix ® cells. Using a layer of strontium doped lanthanum cobaltite as current collector, a current density of 1.31 A cm −2 (at 0.70 V) was obtained at 800 °C using hydrogen fuel with small single cells, after optimizing the cathode sintering temperature. Impedance spectroscopy measurements were performed; the different resistive contributions and the values of the corresponding equivalent capacities are discussed.
Published Version
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