交通運輸是形成氮氧化物的主要汙染來源，其中富氧燃燒引擎(lean-burn engines)雖可提高燃料的使用效率，但卻提高了氮氧化物的排放，傳統三相觸媒無法解決，勢必要發展更有效的氮氧化物處理技術。本研究分別使用的鈣鈦礦結構為La0.57Sr0.38Ag0.05Co0.95Cu0.05O3-δ(LSACC)和La0.58Sr0.4CoO3-δ(LSC)，作為電觸媒管(electrocatalytic tube)和陽極支撐型鈕扣電池(anode electrolyte bilayer button cell)的陰極材料。
本研究前面主要是測試LSACC電觸媒管材料處理氮氧化物的基本測試，觀察氮氧化物分解處理的情形。為了更加貼近真實的模擬廢氣，將系統中的氦氣換成氮氣，卻發現氮氣系統下的氮氧化物轉化率降低很多，推測為材料中添加的Cu對於N2產生強吸附，會阻礙被吸附氮氧化物中氮物種的表面擴散結合成N2離開。基於上述的原因，改以A site有缺陷的La0.58Sr0.4Co為電觸媒管陰極材料，由於文獻提到A site有缺陷的鈣鈦礦結構會增加氧空缺，想要觀察La0.58Sr0.4Co材料是否有此特性以及在氮氣系統是否可行。後來進行La0.58Sr0.4Co的觸媒測試，發現其轉化率與電觸媒管下的轉化率沒有相差太多，推測應為管型電觸媒的頂端呈圓弧型，受到流體力學的影響使陰極模擬廢氣無法與陰極觸媒反應完全。由於上述原因，改以La0.58Sr0.4Co為陽極支撐型鈕扣電池陰極材料。

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