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    题名: Ba0.8Sr0.2Ce0.8-x-yZryInxY0.2O3-δ(x=0.05,0.1 y=0,0.1)固態氧化物燃料電池電解質材料燒 結能力、微結構與其導電性質之研究;The study of sintering ability, microstructure, and conductivity of Ba0.8Sr0.2Ce0.8-xyZryInxY0.2O3- δ(x=0.05,0.1 y=0,0.1) Solid oxide fuel cell electrolyte material
    作者: 任裕靖;Ren,Yu-jing
    贡献者: 材料科學與工程研究所
    关键词: 導電率;化學穩定性;電解質;固態氧化物燃料電池;銦摻雜;SOFC;sinterability;conductivity;chemical stability;electrolyte;Indium doping
    日期: 2014-07-21
    上传时间: 2014-10-15 15:06:08 (UTC+8)
    出版者: 國立中央大學
    摘要: 本研究成功利用固相反應法製備Ba0.8Sr0.2Ce0.8-x-yZryInxY0.2O3-δ(x=0.05,
    0.1 y=0,0.1)粉體,由於BaCeO3 具有高質子導電率,釔及鍶之摻雜可以增
    加導電率,鋯之摻雜可以增加化學穩定性,銦摻雜可以降低燒結溫度,非常
    適合應用於P-SOFC 之電解質材料。銦之摻雜對於燒結能力有明顯的提升,
    摻雜0.05 %收縮率增加了7 %,而且燒結溫度可以由1600 °C 下降至1450
    °C,經由SEM 觀察其破斷面非常緻密。而導電率在800 °C 氫氣氣氛下可
    達0.011 S/cm,達到目前商用的需求(0.01 S/cm)。並利用噴霧塗佈法來製備
    陽極支撐型半電池,將含有NiO 及造孔劑之Ba0.8Sr0.2Ce0.6Zr0.2Y0.2O3-δ 乾壓
    成形,噴上電解質,共燒溫度為1450 °C,再塗佈白金作為陰極,進行電池
    功率之量測。;Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ(0.0≦x≦0.2) proton-conducting oxides
    had been successfully prepared using a solid state reaction method. In this study,
    the effect of indium contents on the microstructures, chemical stability, electrical
    conductivity, and sintering ability of these Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ oxides
    were systemically studied by using X-ray diffraction (XRD), scanning electron
    microscopy, and two point probe conductivity analysis. The XRD results showed
    that no second phase could be resolved from the Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ
    oxides sintered at 1450 °C for 4 hr. Meanwhile, the SEM observation shows a
    dense surface morphology for these oxides after sintering at 1450 °C for 4 hr. The
    optimum conductivity can reach to 0.011 S/cm at 800 °C occurs at the oxide
    composition of Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-δ. In addition, the chemical stability to
    resist CO2 at 600 °C can be effectively improved by doping more than 0.1 at%
    indium. Therefore, the Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-δ ceramic is suggested to be a
    potential electrolyte material for P-SOFC applications. In addition, the anodesupported
    half-cell was prepared by spray coating the Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-
    δ electrolyte slurry on the anode pellet , and sintered at 1450 °C for 4 hour. Then
    the sintered half-cell was coated with Pt paste as cathode for I-V curve testing.
    Keywords: SOFC, sinterability, conductivity, chemical stability, electrolyte,
    IndiumBa0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ(0.0≦x≦0.2) proton-conducting oxides
    had been successfully prepared using a solid state reaction method. In this study,
    the effect of indium contents on the microstructures, chemical stability, electrical
    conductivity, and sintering ability of these Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ oxides
    were systemically studied by using X-ray diffraction (XRD), scanning electron
    microscopy, and two point probe conductivity analysis. The XRD results showed
    that no second phase could be resolved from the Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2-xO3-δ
    oxides sintered at 1450 °C for 4 hr. Meanwhile, the SEM observation shows a
    dense surface morphology for these oxides after sintering at 1450 °C for 4 hr. The
    optimum conductivity can reach to 0.011 S/cm at 800 °C occurs at the oxide
    composition of Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-δ. In addition, the chemical stability to
    resist CO2 at 600 °C can be effectively improved by doping more than 0.1 at%
    indium. Therefore, the Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-δ ceramic is suggested to be a
    potential electrolyte material for P-SOFC applications. In addition, the anodesupported
    half-cell was prepared by spray coating the Ba0.8Sr0.2Ce0.75In0.05Y0.2O3-
    δ electrolyte slurry on the anode pellet , and sintered at 1450 °C for 4 hour. Then
    the sintered half-cell was coated with Pt paste as cathode for I-V curve testing.
    Keywords: SOFC, sinterability, conductivity, chemical stability, electrolyte,
    Indium
    显示于类别:[材料科學與工程研究所 ] 博碩士論文

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