奈米碳管與金屬氧化物的結合在超級電容器的應用中被認為是一種具有潛力的方法，本實驗研究奈米碳管/氧化錳奈米複合電極的合成以及電化學性質，奈米碳管利用微波電漿輔助CVD直接成長於矽基板上，在氧化錳還原之前先以不同濃度的硫酸或硝酸將碳管純化和活化，再探討以不同的沉積條件製備的奈米碳管/氧化錳複合電極的材料特性。
經由拉曼光譜分析可以得知氧化錳結構為birnessite type-MnO2，並且在pH = 7時氧化錳可以均勻散佈在奈米碳管的表面，經由濃硫酸可以最佳純化和活化奈米碳管，在還原時提高溫度能有效提高比電容值。在以濃硫酸做前處理，70 ℃、pH = 7的0.1 M過錳酸鉀溶液中還原，用1 M 硫酸鈉做為電化學量測的電解液並以 20mV/s 的掃描速率可以得到最高比電容值為 46 mF/cm2，在氧化錳包覆量較少的狀態下以 200 mV/s的掃描速率更能擁有50% 以上的比電容值維持率，而穩定性在經過1000次的掃描循環過後仍能保有良好的穩定性，顯示氧化錳/奈米碳管複合電極是應用於超電容的理想材料。

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