Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147050 | International Journal of Hydrogen Energy | 2017 | 12 Pages |
Abstract
The as-prepared PrBaCo2âxNbxO5+δ with x = 0, 0.25, 0.50, 0.75, and 1.00 (PBCN) exhibit structural change from P4/mmm (x = 0) to I4/mmm (x = 1), whereas both phases are present for intermediate compositions. The analysis of electrochemical impedance spectroscopy (EIS) data shows that PBCN is characterized by relatively low polarization resistance. Between 300 and 800 °C, the electrical conductivity of PBCN, with x = 0.25, 0.50, lies above 100 S cmâ1. If x = 0.75 or 1.00, the conductivity drops below 100 S cmâ1. Our work suggests that the Nb-doped PBC exhibits excellent chemical compatibility with typical electrolyte material and good electrochemical performance, making it a promising cathode material for applications in IT-SOFCs.
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Authors
Mattia Saccoccio, Chunli Jiang, Yang Gao, Dengjie Chen, Francesco Ciucci,