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研究生:潘昭璇
研究生(外文):Pan, Chao-Hsuan
論文名稱:有機化學合成法製備中溫固態燃料電池陽極材料及其電性分析
論文名稱(外文):Chemical Synthesis and Electrical Conductivities of Materials for IT-SOFC Anode
指導教授:簡朝和
指導教授(外文):Jean, Jau-Ho
口試委員:王錫福向性一
口試日期:2011-7-29
學位類別:碩士
校院名稱:國立清華大學
系所名稱:材料科學工程學系
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:60
中文關鍵詞:固態氧化物燃料電池離子導電電子導電
外文關鍵詞:SOFCionic conductivityelectronic conductivity
相關次數:
  • 被引用被引用:1
  • 點閱點閱:297
  • 評分評分:
  • 下載下載:19
  • 收藏至我的研究室書目清單書目收藏:0
本研究利用有機化學合成法製備均質之BaCe0.9Zr0.1O3,並以不同的三價陽離子(Yb, Y, Dy, Gd, Eu)取代晶格中Ce位置,觀察不同陽離子對導電率之影響。其中以BaCe0.7Zr0.1Dy0.2O3-δ具有較佳之穩定性及導電性,深入研究其缺陷化學與導電率的關係,發現電洞導電特性和氧氣分壓成1/4次方關係,推導出離子及電洞各別之導電率及活化能,並算出不同氧分壓下之遷移數(Transference Number),可知高氧分壓下,導電度由電洞貢獻;低氧分壓下,由離子所貢獻。並更進一步探討添加不同鋯含量對材料穩定性的影響,其中當摻雜鋯含量大於0.3 mol時,可於二氧化碳氣氛下穩定存在,且BaCe0.5Zr0.3Dy0.2O3-δ之導電率亦符合所推導出之缺陷化學。
目錄……………………………………………………………………....I
圖目錄…………………………………………………………………..III
表目錄…………………………………………………………………..VI
1. 前言…………………………………………………………………...1
2. 實驗方法……………………………………………………………...3
2.1 原材料選擇……………………………………………………….3
2.2 粉體合成………………………………………………………….3
2.3 試片製作………………………………………………………….4
2.3.1 粉末造粒……………………………………………………..4
2.3.2 壓片成形……………………………………………………..4
2.3.3脫脂燒結……………………………………………………...4
2.3.4電性試片製作………………………………………………...5
2.4 性質測試………………………………………………………….5
2.4.1 熱重分析……………………………………………………..5
2.4.2 X-ray繞射分析……………………………………………….5
2.4.3 顯微結構觀察………………………………………………..6
2.4.4 導電率量測………………………………………………….6
3. 結果與討論…………………………………………………………..8
3.1 BaCe0.7Zr0.1Y0.1R0.1O3-δ(R=Yb, Y, Dy, Gd, Eu)…………………...8
3.2 BaCe0.7Zr0.1Y0.2-xDyxO3-δ(x=0, 0.05, 0.1, 0.15, 0.2)……………...10
3.3 BaCe0.9-yZr0.1DyyO3-δ(y=0, 0.1, 0.2, 0.3, 0.4)…………………….10
3.4 BaCe0.9-zZrzDy0.2O3-δ(z=0.1, 0.2, 0.25, 0.3, 0.4)…………………13
4. 結論………………………………………………………………....17
5. 參考文獻……………………………………………………………18

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