Effects of trivalent dopants on phase stability and catalytic activity of YBaCo4O7-based cathodes in solid oxide fuel cells

2018 ◽  
Vol 6 (34) ◽  
pp. 16412-16420 ◽  
Author(s):  
Ke-Yu Lai ◽  
Arumugam Manthiram

In order to understand the doping and co-doping effects of trivalent cations (Al3+, Ga3+, and Fe3+) in the swedenborgite oxide YBaCo4O7 as a cathode in intermediate-temperature SOFCs, four series of YBaCo4O7-based materials, including YBaCo4−xAlxO7+δ, YBaCo4−x−yGaxAlyO7+δ, YBaCo3.2Ga0.8−xFexO7+δ, and YBaCo3.5−xAl0.5FexO7+δ, have been synthesized and investigated.

2008 ◽  
Vol 33 (17) ◽  
pp. 4681-4688 ◽  
Author(s):  
Haitao Gu ◽  
Han Chen ◽  
Ling Gao ◽  
Yifeng Zheng ◽  
Xiaofang Zhu ◽  
...  

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