本研究之目的為發展以鑭鉬氧化物(LAMOX)做為電解質之固態氧化物燃料電池。在論文中以鏑、鎢雙摻雜鑭鉬氧化物(La1.8Dy0.2Mo2-xWx , LDMW)作為單電池之電解質，10mol% Gd摻雜CeO2 (GDC10)作為陰極擴散阻障層並與GDC10-Ni陶金複合材料陽極及鑭鍶鈷鐵氧化物( La0.6Sr0.4Co0.8Fe0.2, LSCF6482)陰極搭配，以陽極支撐的單電池架構，在單氣室(single-chamber)的設計下進行j-V及j-P曲線的量測。單電池測試時，總氣體流量為350 sccm的甲烷－空氣混合物通入反應器作為電化學反應之用。並且探討在不同溫度下，不同陽極比例、Rmix(CH4 /O2)、電解質組成及厚度對最大功率密度(maximum power density, MPD)及開環電位(open circuit voltage, OCV)的影響。結構分析方面，以X光繞射分析陽極陶金相，以SEM電鏡分析單電池顯微結構。
　　從XRD的結果顯示， 1523K燒結，NiO與電解質並不會反應生成其它晶相。SEM的影像顯示，電極結構皆為多孔，電解質緻密。用做比較的各組單電池皆有著相似的電池架構。
　　在改變陽極組成對功率表現影響上，GDC10 : NiO(in wt%) = 40 : 60 的陽極與La1.8Dy0.2Mo2(LDM91)的搭配展現出較佳的MPD。在898K時，其OCV及MPD分別為0.77V及193mW cm-2。而在氣氛的影響上，Rmix = 1的MPD值在各個溫度下皆高於Rmix = 2。電解質厚度及組成對電性的影響上，厚度為70μm左右時，單電池的OCV隨著鎢含量的增加而增加；但MPD卻呈現相反的趨勢。而當電解質的厚度降至30μm時，單電池的OCV仍隨著鎢含量的增加而增加但比厚度為70μm時低；而對於30μm厚度的La1.8Dy0.2Mo1.6W0.4及La1.8Dy0.2Mo1W1來說，在溫度分別為823K、848K、873K及823K、848K、873K、898K、923K、948K時其MPD值較厚電解質單電池的高，但當溫度繼續升高至898K及973K，卻沒有比較高。

Our purpose intends to develop SOFC single cell based on LAMOX electrolyte. In this study, La1.8Dy0.2Mo2-xWx (LDMW), 10mol% Gd doped CeO2 (GDC10), GDC10-Ni cermet composite and La0.6Sr0.4Co0.8Fe0.2 (LSCF6482) are electrolyte, cathodic diffusion barrier layer, anode and cathode respectively. Those anode- supported single cells were tested on the basis of single-chamber design. 350 sccm methane-air mixture supplied for electrochemical reactions was introduced into reactor. The effects on open circuit voltage (OCV) and maximum power density (MPD) via adjusting anode ratio, Rmix(the amount of CH4 / the amount of O2) and composition as well as thickness of electrolyte were investigated in this thesis. Materials microstructure and chemical compatibility were examined by SEM and XRD.
XRD patterns show that no impurity phase forms between electrolyte and NiO at 1523K. Porosity in electrodes and similar configuration in each single cell can be seen in SEM image.
As to the effect on OCV and MPD, the single cell supported by GDC : NiO (in wt%) = 40 :60 exhibits higher MPD than that of other ratios. For this single cell, the best performance takes place at 898K. Its OCV and MPD are 0.77V and 193mW cm-2 respectively. As to the effect on Rmix, the MPD of Rmix = 1 prevail to that of Rmix =2. Thickness and composition also deeply affect OCV and MPD. When electrolytes thickness are around 70μm, OCV of single cells increase with tungsten content in electrolyte yet MPD decrease with it. Working temperature increases with tungsten content in electrolyte as well. On the other hand, thinner electrolytes (~30μm) are applied on single cells, OCV of single cells still increase with W content in electrolyte. Additionally, their values are lower than that of thicker electrolyte. La1.8Dy0.2Mo1.6W0.4 and La1.8Dy0.2Mo1W1 single cells with thinner electrolytes promote MPD when temperature are 823K, 848K and 873K for La1.8Dy0.2Mo1.6W0.4 and 823K, 848K, 873K, 898K, 923K, 948K for La1.8Dy0.2Mo1W1. However, their performances are not better when temperatures are higher than 898K for La1.8Dy0.2Mo1.6W0.4 and 973K for La1.8Dy0.2Mo1W1.

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