本論文主旨在以不同方法改善單氣室固態氧化物燃料電池之陰、陽兩極。在改善陰極方面，以不同比例及粒徑的 Sm0.5Sr0.5CoO3 (SSC) / Sm0.2Ce0.8O1.9 (SDC) 粉末，來製作不同材料組成的多層式陰極。在改善陽極部分，則使用不同比例的 NiO、SDC、孔洞生成劑同時添加陽極功能層來製備多層的陽極，同時也摻雜貴金屬 Pd 及 Rh 於各層陽極中。藉由電子顯微鏡、交流阻抗及電功率密度測試的分析結果，探討陰陽兩極的改變對電池的影響，電功率密度測試以體積流量比2：1之甲烷與空氣為進料氣體，操作溫度則為 500℃ 至 700℃。
　　由實驗結果得知，陽極以NiO-SDC 重量比為 7：3 所製備之電池擁有較佳的電化學性質；而陰極以 SSC-SDC 重量比為 7：3 組成的陰極所製作之電池具有較佳的電化學表現；相較於單一結構之陰極，擁有不同粒徑與不同材料比例結構之陰極能有效提升電化學效率，其中 SSC 以四層陰極結構，且在第一層使用較小粒徑之陰極，其製備之電池擁有較佳電功密度 414.39 mW/ cm2；在陽極方面，不同粉末粒徑、梯度孔洞以及材料組成之多層陽極結構也優於均一結構之陽極，其中以三層之陽極結構，而陽極功能層使用粒徑較小之粉末，其所製備之電池於 600℃下之測試電功密度為 478.06 mW/ cm2；摻雜 Pd 於多層陽極靠近電解質的中間層及外側層能提升電池電化學效率，若於陽極內側層添加 Pd 則會抑制電池電化學表現。而陽極表面積碳量與電池電功密度皆隨 Pd 摻雜量提升而增加，而當 Pd 添加量達 7 wt%，相較其他有摻雜 Pd之電池反倒擁有較佳電功密度 535.86 mW/cm2；就 Rh 滴定於陽極表面之實驗結果顯示，電化學功率表現隨著 Rh 滴定量增加而提升，而比起其他不同摻雜量之電池，當 Rh 滴定量達 0.3 wt % 時有較佳電功密度 520.97 mW/cm2，且於陽極表面無積碳現象產生。

　　The purpose of this study intends to use different methods to improve the anode and cathode for improvement of cell performance of single-chamber solid state oxide fuel cell (SC-SOFC). To reach the goal, Sm0.5Sr0.5CoO3 (SSC)/ Sm0.2Ce0.8O1.9 (SDC) of different ratios, particle size and composition of the multi-layer cathode was investigated. For anode, diverse ratio of NiO and SDC, pore former (graphite) for preparation of anode functional layer were considered for multi-layer electrode purpose. In addition, the influence of precious metal (Pd, Rh) added in each anode layer was realized. The as prepared anodes and cathodes were characterized by scanning electron microscope (SEM), AC impedance and electrochemical analysis. The performance of the cell was examined at the temperature range of 500-700℃. Methane and air were used as fuel resource and the ratio of volume flow rate is 2:1.
　　First of all, the experimental results show that the best composition ratio for the both NiO/SDC anode and SSC/SDC cathode were 7:3. It is also noted that the cathode made of diverse particle size as well as functional graded SSC (content in four-layer cathode and the particle size in 1st layer is smaller than others) shows better performance than that of homogeneous layer does. For SSC-SDC cathode, the maximum power density of the cell of four layer electrode with smaller particle size for first layer was able to deliver 414.39 mW/cm2 at 600℃. For NiO-SDC anode, a three-layer of various particle size and porosity-graded structure were superior to a homogeneous one. It was found that the maximum power density of cell with three-layer electrode of anode functional layer (AFL) could reach 478.06 mW/cm2 at 600℃.
　　Finally, the benefit of the addition of noble metal to the anode is demonstrated. Pd was added to the middle and outer layers of the three-layer anode. It is found that the maximum power density was 535.86 mW/cm2 with 7 wt% Pd at 600℃. However, carbon deposition on the anode surface was not able to be avoided. Once Pd was incorporated into the other layer attached to the electrolyte, reduction of the cell performance was found. For addition of Rh to the anode side, similar power density of 520 mW/cm2 was obtained with only Rh loading of 0.3 wt% at 600℃. Surprisingly, no carbon deposition was found on the anode.

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