新型双钙钛矿基对称固体氧化物燃料电池的制备及性能
发布时间：2018-08-18 09:06
【摘要】：采用柠檬酸-硝酸盐燃烧法制备PrBaFe_2O_(5+δ)(PBFO)和PrBaFe_(1.6)Ni_(0.4)O_(5+δ)(PBFNO)电极材料,用高温固相法制备La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_(3 δ)(LSGM)电解质。以LSGM为电解质,PBFNO及PBFNO-SDC分别为对称电极制备单电池。利用X射线衍射法研究材料的物相结构,交流阻抗法记录界面极化行为,扫描电子显微镜观察电池的断面微结构,用自组装的测试系统评价电池输出性能。结果表明:合成的PBFO和PBFNO粉体呈现单一的钙钛矿结构;Ni掺杂能够明显改善空气气氛下的界面极化行为,800℃时电极 电解质的界面极化阻抗由1.94?·cm~2降低到0.39?·cm~2。通过PBFNO与SDC复合能够明显增大电极的三相反应界面,提高电池输出性能,单电池在800℃时的最大功率输出密度从332mW/cm~2增大到372mW/cm~2。PBFNO-SDC复合电极是潜在的对称固体氧化物燃料电池电极材料。
[Abstract]:PrBaFe2O5 未) (PBFO) and PrBaFe1.6 Ni0.4 O5 未) (PBFNO) electrode materials were prepared by citrate-nitrate combustion method, and La0.9 Sr0.1 Ga0.8 Mg0.2O3 未) (LSGM) electrolytes were prepared by high temperature solid state method. Single cell was prepared by using LSGM as electrolyte and PBFNO-SDC as symmetric electrode. The phase structure of the material was studied by X-ray diffraction, the polarization behavior of the interface was recorded by AC impedance method, the cross-section microstructure of the battery was observed by scanning electron microscope, and the output performance of the battery was evaluated by a self-assembled test system. The results show that the interfacial polarization behavior of the synthesized PBFO and PBFNO powders with a single perovskite structure can be obviously improved at 800 鈩，
本文编号：2189011
[Abstract]:PrBaFe2O5 未) (PBFO) and PrBaFe1.6 Ni0.4 O5 未) (PBFNO) electrode materials were prepared by citrate-nitrate combustion method, and La0.9 Sr0.1 Ga0.8 Mg0.2O3 未) (LSGM) electrolytes were prepared by high temperature solid state method. Single cell was prepared by using LSGM as electrolyte and PBFNO-SDC as symmetric electrode. The phase structure of the material was studied by X-ray diffraction, the polarization behavior of the interface was recorded by AC impedance method, the cross-section microstructure of the battery was observed by scanning electron microscope, and the output performance of the battery was evaluated by a self-assembled test system. The results show that the interfacial polarization behavior of the synthesized PBFO and PBFNO powders with a single perovskite structure can be obviously improved at 800 鈩，
本文编号：2189011
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