Oxygen reduction kinetic enhancements of intermediate-temperature SOFC cathodes with novel Nd0.5Sr0.5CoO3-δ/Nd0.8Sr1.2CoO4±δ heterointerfaces
Keywords: Intermediate-temperature SOFC; Nd0.5Sr0.5CoO3-δ/Nd0.8Sr1.2CoO4±δ; Heterointerface; Sr enrichment; Oxygen vacancy; Valence state of cobalt;