TY - JOUR
T1 - Evaluating the effect of Pr-doping on the performance of strontium-doped lanthanum ferrite cathodes for protonic SOFCs
AU - Ma, Jinming
AU - Tao, Zetian
AU - Kou, Hongning
AU - Fronzi, Marco
AU - Bi, Lei
N1 - Funding Information:
This work was supported by the Natural Science Foundation of Shandong Province (Grant No.: ZR2018JL017 ). The Work was Supported by Joint Open Fund of Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments and Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province .
Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/2/15
Y1 - 2020/2/15
N2 - A Pr-doping strategy was used to improve traditional strontium-doped lanthanum ferrite oxides for proton-conducting solid oxide fuel cells (SOFCs). Three different samples, La0.5Sr0.5FeO3-δ, La0.25Pr0.25Sr0.5FeO3-δ, and Pr0.5Sr0.5FeO3-δ,were successfully prepared. The Pr content was shown to have an obvious influence on the hydration ability of the materials. Hydration was improved at higher Pr-contents, suggesting a promising cathode performance. However, the improved hydration ability did not always lead to an increased fuel cell performance, and it was found that the fuel cell performed best when an appropriate Pr-doping amount was used that resulted in a good compromise between protonic and oxygen-ion conduction. As a result, the optimized composition La0.25Pr025Sr0.5FeO3-δ generated a high peak power density of 616 mW cm−2 and a low polarization resistance of 0.09 at Ω cm2 at 700 °C, which is an encouraging performance for a traditional cathode material.
AB - A Pr-doping strategy was used to improve traditional strontium-doped lanthanum ferrite oxides for proton-conducting solid oxide fuel cells (SOFCs). Three different samples, La0.5Sr0.5FeO3-δ, La0.25Pr0.25Sr0.5FeO3-δ, and Pr0.5Sr0.5FeO3-δ,were successfully prepared. The Pr content was shown to have an obvious influence on the hydration ability of the materials. Hydration was improved at higher Pr-contents, suggesting a promising cathode performance. However, the improved hydration ability did not always lead to an increased fuel cell performance, and it was found that the fuel cell performed best when an appropriate Pr-doping amount was used that resulted in a good compromise between protonic and oxygen-ion conduction. As a result, the optimized composition La0.25Pr025Sr0.5FeO3-δ generated a high peak power density of 616 mW cm−2 and a low polarization resistance of 0.09 at Ω cm2 at 700 °C, which is an encouraging performance for a traditional cathode material.
KW - Cathode
KW - LaFeO
KW - Oxides
KW - Protonic SOFC
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U2 - 10.1016/j.ceramint.2019.10.017
DO - 10.1016/j.ceramint.2019.10.017
M3 - Article
AN - SCOPUS:85073025866
SN - 0272-8842
VL - 46
SP - 4000
EP - 4005
JO - Ceramics International
JF - Ceramics International
IS - 3
ER -