本研究利用有機化學法合成均質的Ce0.8-YGd0.2-XCaXCoYO1.9-δ 乾燥凝膠錯合物，由於參與反應的金屬離子能緊密接鄰，因此經過700°C 煆燒熱處理後，即可生成單一純相Ce0.8-YGd0.2-XCaXCoYO1.9-δ 粉體結晶相，實驗結果得知添加3mol% 鈷(Y = 0.03)以及10mol% 鈣(X = 0.1)可以得到最佳導電度，該煆燒粉體經過1000°C 燒結熱處理後即能緻密，且相對燒結緻密度可達95%以上。實驗結果確定鈣取代量為10mol%為最佳，在700oC下導電率達0.046Scm-1，其原因為鈣離子之離子半徑大於鈰及釓離子，鈣離子進入氧化鈰之晶格中將其晶格撐開而提升載子移動率連帶地增加導電率。

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