Pr2BaNiMnO7−δ double-layered Ruddlesden–Popper perovskite oxides as efficient cathode electrocatalysts for low temperature proton conducting solid oxide fuel cells

2020 ◽  
Vol 8 (16) ◽  
pp. 7704-7712 ◽  
Author(s):  
Qi Wang ◽  
Jie Hou ◽  
Yun Fan ◽  
Xiu-an Xi ◽  
Jun Li ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Perovskite Oxides ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel

The performance of low-temperature solid-oxide fuel cells (LT-SOFCs) is heavily dependent on the electrocatalytic activity of the cathode toward the oxygen reduction reaction (ORR).

Antimony-doped Bi0.5Sr0.5FeO3−δ as a novel Fe-based oxygen reduction electrocatalyst for solid oxide fuel cells below 600 °C

2018 ◽  
Vol 6 (31) ◽  
pp. 15221-15229 ◽  
Author(s):  
Lei Gao ◽  
Qiang Li ◽  
Liping Sun ◽  
Tian Xia ◽  
Lihua Huo ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Perovskite Oxide ◽  
Structure Stability ◽  
Oxide Fuel

The perovskite oxide Bi0.5Sr0.5Fe0.90Sb0.10O3−δ exhibits good structure stability and superior electrocatalytic activity for the oxygen reduction reaction, making it a highly promising cathode for LT-SOFCs.

scholarly journals Insights in to the Electrochemical Activity of Fe-Based Perovskite Cathodes toward Oxygen Reduction Reaction for Solid Oxide Fuel Cells

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1260
Author(s):  
Dan Ma ◽  
Juntao Gao ◽  
Tian Xia ◽  
Qiang Li ◽  
Liping Sun ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Single Cells ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel

The development of novel oxygen reduction electrodes with superior electrocatalytic activity and CO2 durability is a major challenge for solid oxide fuel cells (SOFCs). Here, novel cobalt-free perovskite oxides, BaFe1−xYxO3−δ (x = 0.05, 0.10, and 0.15) denoted as BFY05, BFY10, and BFY15, are intensively evaluated as oxygen reduction electrode candidate for solid oxide fuel cells. These materials have been synthesized and the electrocatalytic activity for oxygen reduction reaction (ORR) has been investigated systematically. The BFY10 cathode exhibits the best electrocatalytic performance with a lowest polarization resistance of 0.057 Ω cm2 at 700 °C. Meanwhile, the single cells with the BFY05, BFY10 and BFY15 cathodes deliver the peak power densities of 0.73, 1.1, and 0.89 W cm−2 at 700 °C, respectively. Furthermore, electrochemical impedance spectra (EIS) are analyzed by means of distribution of relaxation time (DRT). The results indicate that the oxygen adsorption-dissociation process is determined to be the rate-limiting step at the electrode interface. In addition, the single cell with the BFY10 cathode exhibits a good long-term stability at 700 °C under an output voltage of 0.5 V for 120 h.

Tailoring defect chemistry at interfaces for promoted oxygen reduction reaction kinetics

2020 ◽  
Vol 8 (44) ◽  
pp. 23313-23322
Author(s):  
Seo Ju Kim ◽  
Ja Yang Koo ◽  
Taeeun Mun ◽  
Mingi Choi ◽  
Wonyoung Lee
Keyword(s):  
Fuel Cells ◽  
Electrochemical Performance ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Reaction Kinetics ◽  
Oxygen Reduction ◽  
Defect Chemistry ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel

Engineering the defect chemistry at the interface between the electrolyte and the electrode is crucial to facilitate oxygen reduction reaction, thereby improve the electrochemical performance of intermediate temperature solid oxide fuel cells.

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