(Pr0.9La0.1)2(Ni0.74Cu0.21Nb0.05)O4+?-Ce0.9Gd0.1O2?? (GDC) as an active and CO2-tolerant nano-composite cathode for intermediate temperature solid oxide fuel cells
By Li, Geng; Jin, Hongyun; Gui, Liangqi; He, Beibei; Zhao, Ling
Published in International Journal of Hydrogen Energy
2018
Abstract
Nano composite of Ruddlesden-Popper electrocatalyst-oxygen ionic conductor, (Pr0.9La0.1)2(Ni0.74Cu0.21Nb0.05)O4+? (PLNCN)-Ce0.9Gd0.1O2?? (GDC), is developed as composite cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs) via a infiltration way. The electrochemical behavior of PLNCN-GDC nanostructured electrode is assessed with respect to infiltration loading and oxygen partial pressure. The optimized PLNCN loading can improve charge transfer dynamics for electrochemical oxygen reduction reaction, thus promoting cathode performance. Importantly, the encouraging results of single cell highlight high activity and good CO2 tolerance of PLNCN-GDC nanostructured cathode.
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