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姓名	任裕靖(Yu-jing Ren)  查詢紙本館藏	畢業系所	材料科學與工程研究所
論文名稱	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)
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摘要(中)	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。
摘要(英)	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
關鍵字(中)	★ 導電率 ★ 化學穩定性 ★ 電解質 ★ 固態氧化物燃料電池 ★ 銦摻雜	關鍵字(英)	★ SOFC ★ sinterability ★ conductivity ★ chemical stability ★ electrolyte ★ Indium doping
論文目次	摘要 .................................................................................................................... i Abstract .............................................................................................................. ii 目錄 .................................................................................................................. iii 表目錄 ............................................................................................................. vii 圖目錄 ............................................................................................................. viii 第一章、前言 .................................................................................................... 1 1-1 緒論 .................................................................................................... 1 1-2 研究動機與目的 ................................................................................. 2 1-2-1 研究動機 ................................................................................. 2 1-2-2 研究目的 ................................................................................. 4 第二章、文獻回顧 ............................................................................................ 7 2-1 固態氧化物燃料電池 (Solid Oxide Fuel Cell, SOFC) ....................... 7 2-1-1 固態氧化物燃料電池的工作原理與機制 ............................... 7 2-1-2 固態氧化物燃料電池陽極材料 .............................................. 9 2-1-3 固態氧化物燃料電池電解質材料......................................... 12 2-1-4 固態氧化物燃料電池電解質材料之晶體結構 ..................... 12 2-1-4-1 螢石結構 (Fluorite structure) ............................................. 13 2-1-4-1-1 摻雜氧化鋯 (ZrO2) ......................................................... 13 2-1-4-1-2 摻雜氧化鈰 (CeO2) ........................................................ 13 2-1-4-2 鈣鈦礦結構 (Pervoskite structure ) .................................... 14 2-1-5 固態氧化物燃料電池陰極材料 ............................................ 14 2-2 粉末製備方法 ................................................................................... 17 2-2-1 固態反應法(SSR) .................................................................. 17 2-2-2 濕式化學法(Wet chemical methods) ...................................... 17 2-2-3 其他合成方法 ........................................................................ 17 2-3 BaCeO3 和BaZrO3 系統 .................................................................... 18 2-4 BaCeO3 摻雜稀土元素 ...................................................................... 19 2-5 BaCeO3 共摻雜不同元素 .................................................................. 21 第三章、實驗方法與步驟 .............................................................................. 28 3-1 粉體與試片製備 ............................................................................... 28 3-1-1 粉體的製備............................................................................ 28 3-1-2 坯體的製備............................................................................ 29 3-2 材料性質分析 ................................................................................... 30 3-2-1 X 光繞射分析 (XRD) ............................................................ 30 3-2-2 粉體粒徑量測 ........................................................................ 30 3-2-3 熱膨脹分析儀 (TDA) ........................................................... 31 3-2-4 收縮率量測 (Shrinkage) ....................................................... 31 3-2-5 掃描式電子顯微鏡分析 (SEM)............................................ 31 3-3 化學穩定性分析 ............................................................................... 32 3-4 導電率量測 ....................................................................................... 32 3-5 噴霧塗佈(Spray Coating) ................................................................. 33 3-5-1 陽極胚體製備 ........................................................................ 33 3-5-2 電解質漿料配製 .................................................................... 34 3-5-3 塗佈製程 ............................................................................... 34 第四章、結果與討論 ...................................................................................... 41 4-1 粉體粒徑分析 ................................................................................... 41 4-2 X 光繞射分析 .................................................................................... 41 4-3 熱膨脹分析 ....................................................................................... 42 4-4 SEM 破斷面分析 ............................................................................... 42 4-5 收縮率分析 ....................................................................................... 43 4-6 化學穩定性分析 ............................................................................... 44 4-7 導電率分析 ....................................................................................... 45 4-8 塗佈製程 .......................................................................................... 46 4-9 電解質I-V 性能測試 ....................................................................... 47 第五章、結論 .................................................................................................. 59 第六章、參考文獻 .......................................................................................... 61
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指導教授	鄭憲清(Shian-ching Jang)	審核日期	2014-7-21
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