煤合成氣(Coal syngas)為氫氣與一氧化碳之混合氣，具有製程簡單、價格低廉等優點，且氫氣與一氧化碳兩者皆為最容易被還原之氣體，在通入陽極端前不需再經過氣體重組之步驟，而可直接反應生成水氣與二氧化碳，於應用上頗具潛力。
在陽極材料的選擇上，傳統的鎳觸媒如60Ni-YSZ，易於表面生成積碳，對於一氧化碳之活性較差。本研究選用具有混合導體特性之鈣鈦礦結構材料LSCF (La0.58Sr0.4Co0.2Fe0.8O3) 及LACF (La0.7Ag0.3Co0.2Fe0.8O3) 為陽極材料，並含浸不同活性金屬Cu、Ag，期能提升對水煤氣之反應性，並避免積碳，以改善此問題。
將LSCF及LACF混合導氧離子性較佳的GDC，並含浸2 wt% Cu或2 wt% Ag，配製成LSCF-50GDC-2Cu、LSCF-50GDC-2Ag、LACF73-50GDC三種陽極漿料，塗佈於YSZ電解質生胚上，陰極端使用活性極好的LSCF-50GDC-2Cu，通入100 mL/min煤合成氣為燃料，測得最大功率密度分別為22.658、37.537與23.496 mW•cm-2。
觀察陽極端通入煤合成氣之電流表現，可發現因CO之擴散及電化學反應速率較慢，因此H2之效能較CO為佳，在某些混合比例下，電池擁有相似之混合效能，推測陽極端有水氣轉移反應的發生，令CO與H2比例維持平衡關係。
使用煤合成氣為陽極燃料時，Ag觸媒比Cu觸媒之表現來得優越，推測以Ag為活性金屬時，氧於Ag上移動較快，可提升燃料催化效果。然而，含Ag量不能太多，否則將會覆蓋氧空缺，不利O2-之擴散。
由定電壓實驗可看出，電池效能受燃料比例與積碳所構成之電流收集層相互影響；而電池於陽極端之反應機制，推測與被吸附之H原子與O2-形成之OH基團相當重要，可促進形成COOH反應中間體，以利CO之氧化成CO2。
由此可知，鈣鈦礦材料對於煤合成氣具有一定之催化活性，以其為陽極材料，可提升電池效能，且在操作過程中並無失活現象。

第一章 緒論 1
第二章 文獻回顧 5
2-1 固態氧化物燃料電池 5
2-1-1 簡介 5
2-1-2 原理 7
2-2 電池組成 8
2-2-1 陽極 8
2-2-2 陰極 10
2-2-3 電解質 12
2-3 鈣鈦礦型氧化物陽極材料 16
2-3-1 鈣鈦礦型結構 16
2-3-2 鈣鈦礦氧化物應用於陽極材料 18
2-4 燃料的選擇 23
2-4-1 煤合成氣 23
2-4-2 CO氧化觸媒 27
第三章 研究構想 32
第四章 實驗方法 35
4-1 實驗藥品與氣體 35
4-1-1 實驗藥品 35
4-1-2 實驗氣體 36
4-2 材料製備方法 37
4-2-1 La0.58Sr0.4Co0.2Fe0.8O3(LSCF) 37
4-2-2 La0.7Ag0.3Co0.2Fe0.8O3(LACF) 38
4-2-3 Ce0.9Gd0.1O1.95 (GDC) 39
4-2-4 陽極複合材料 40
4-3 電池單元製作 41
4-3-1 旋轉塗佈漿料製備 41
4-3-2 電池製作 42
4-4 分析儀器與實驗裝置 44
4-4-1 儀器 44
4-4-2 實驗裝置 45
4-5 實驗步驟與流程 46
4-5-1 定溫還原反應實驗 46
4-5-2 電池封裝 47
4-4-2 電池效能測試 48
第五章 實驗結果與討論 50
5-1 X光繞射分析(XRD) 50
5-1-1 GDC 50
5-1-2 La0.58Sr0.4Co0.2Fe0.8 O3-δ 52
5-1-2 (La,Ag)Co0.2Fe0.8O3-δ 53
5-2 鈣鈦礦粉體定溫還原反應 56
5-2-1 氫氣定溫反應 56
5-2-2 一氧化碳定溫反應 59
5-2-3 水煤氣定溫反應 61
5-3 鈣鈦礦混合GDC粉體定溫還原反應 65
5-3-1 氫氣定溫反應 65
5-3-2 一氧化碳定溫反應 67
5-3-3 水煤氣定溫反應 69
5-4 電池性能測試 72
5-4-1 電池之SEM微結構圖 72
5-4-2 不同燃料比例所造成之影響 75
5-4-2 不同陽極材料之比較 83
5-4-3 拉電過程紀錄 89
5-5 定溫定電壓測試 91
5-5-1 水煤氣之開路與閉路反應 91
5-5-2 合成氣之定電壓反應分析 95
5-5-3 反應機構推導 106
第六章 結論 110
第七章 未來方向 112
第八章 參考資料 113

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