Electrochemical Performance of Cobalt-free Nd0.5Ba0.5Fe1-xNixO3-delta Cathode Materials for Intermediate Temperature Solid Oxide Fuel Cells
Shi, H; Ding, Z; Ma, G
| HERO ID | 4132579 |
|---|---|
| In Press | No |
| Year | 2016 |
| Title | Electrochemical Performance of Cobalt-free Nd0.5Ba0.5Fe1-xNixO3-delta Cathode Materials for Intermediate Temperature Solid Oxide Fuel Cells |
| Authors | Shi, H; Ding, Z; Ma, G |
| Journal | Fuel Cells |
| Volume | 16 |
| Issue | 2 |
| Page Numbers | 258-262 |
| Abstract | A new series of cobalt-free perovskite-type oxides, Nd0.5Ba0.5Fe1-xNixO3-delta (0 <= x <= 0.15), have been prepared by a citric acid-nitrate process and investigated as cathode materials for proton conducting intermediate temperature solid oxide fuel cells (IT-SOFCs). The conductivity of the oxides was measured at 300-800 degrees C in air. It is discovered that partial substitution of Ni for Fe-sites in Nd0.5Ba0.5Fe1-xNixO3-delta obviously enhances the conductivity of the oxides. Among the series of oxides, the Nd0.5Ba0.5Fe0.9Ni0.1O3-delta (NBFNi10) exhibits the highest conductivity of 140 S cm(-1) in air at 550 degrees C. A single H-2/air fuel cell with proton-conducting BaZr0.1Ce0.7Y0.2O3-delta (BZCY) electrolyte membrane (ca. 40 mu m thickness) and NBFNi10-BZCY composite cathode and NiO-BZCY composite anode was fabricated and tested at 600-700 degrees C. The peak power density and the interfacial polarization resistance (R-p) of the cell are 490 mW cm(-2) and 0.15 W cm(2) at 700 degrees C, respectively. The experimental results indicate that NBFNi10 is a promising cathode material for the proton-conducting IT-SOFCs. |
| Doi | 10.1002/fuce.201500156 |
| Wosid | WOS:000374736000012 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Cathode; Ceramic Membrane; Conductivity; Intermediate Temperature; Properties; SOFC |