A dense NiO-Fe2O3 (NiFe) pellet has been developed as a potential anode-support for thinfilm solid oxide fuel cells (SOFCs).However, preparation of dense NiFe is very challenging.Hole-formed NiFe pellets or porous NiFe pellets are frequently formed, which cannot be used as a support (substrate) for thin-film SOFCs.Therefore, this hole-formed NiFe support is simply wasted.In this report, we attempt to re-qualify this NiFe support to be a valuable substrate, which can be used for fabricating thin-film SOFCs.By deposition of smaller NiFe particles to cover the hole-formed NiFe support, the surface of this NiFe pellet is modified.Large holes on the surface disappear.The newly formed NiFe support can be used for fabricating a single cell with La0.9Sr0.1Ga0.8Mg0.2O3-δas thin-film electrolyte operated at intermediate temperature.Maximum power density generated from this cell is 0.45, 0.86 and 1.28 W cm -2 at 873, 923 and 973 K, respectively.
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Khan et al. (2024) studied this question.
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