Return
Promoted Performance of Layered Perovskite PrBaFe2O5+δ Cathode for Protonic Ceramic Fuel Cells by Zn Doping
.png){kind=icon}
OA
AI
B
B
D
S
H
K
陈
B
DOI：10.3390/catal12050488.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Proton-conducting solid-oxide fuel cell (H-SOFC) is an alternative promising low-temperature electrochemical cell for renewable energy, but the performance is insufficient because of the low activity of cathode materials at low temperatures. A layered perovskite oxide PrBaFe1.9Zn0.1O5+delta (PBFZ) was synthesized and investigated as a promising cathode material for low-temperature H-SOFC. Here, the partial substitution of Fe by Zn further enhances the electrical conductivity and thermal compatibility of PrBaFe2O5+delta (PBF). The PBFZ exhibits improved conductivity in the air at intermediate temperatures and good chemical compatibility with electrolytes. The oxygen vacancy formed at the PBFZ lattice due to Zn doping enhances proton defects, resulting in an improved performance by extending the catalytic sites to the whole cathode area. A single cell with a Ni-BZCY anode, PBFZ cathode, and BaZr0.7Ce0.2Y0.1O3-delta (BZCY) electrolyte membrane was successfully fabricated and tested at 550-700 degrees C. The maximum power density and R-p were enhanced to 513 mW center dot cm(-2) and 0.3 omega center dot cm(2) at 700 degrees C, respectively, due to Zn doping.
Keywords:
H-SOFC
layered perovskite
proton defect
Zn doping
double perovskite
oxygen vacancy
Journal
IF:
4
Papers:
1.2W
Citations:
3.4W
Organization
Cited Papers