本研究主要目的為利用一步驟水熱法合成混合三種過渡金屬(鎳、錳及鈷)的氫氧化物，藉由調整金屬前驅物(硝酸鈷和硝酸錳)的濃度以及添加物(尿素以及氟化胺)的比例，同時達到具有適當活性物質重量在基板上以及優越電容值的表現，並應用在超級電容器的領域。該材料在電流密度為1(A/g)下的電容值為2,286(F/g)，和高電流密度下(20 A/g)的電容值相比得到的電容保有率(Rate Capability)為54%，在三極式系統下經過兩千圈循環壽命測試下，仍然有89%的電容持有率(Retention Capability)，而且庫倫效率為93%，我們將藉由各種分析方法(Trassati’s method, Dun’s method, Randle’s equation)來探討其中的電能儲存機制，以對該材料有更深入的研究。
此外，在此研究中，我們將點出兩項目前採用類似合成手法的研究當中，不曾提到的部分：第一、基板在合成的過程中會參與反應，實際上量測得到的重量需要做修正。第二、電容值的表現會隨著活性物質重量的增加而衰減，我們將會是的第一個用實驗，來驗證此現象是來自於電阻值的增加。

In this work, we have studied a novel supercapacitor electrode made out of a mixed transition metal hydroxide grown on Ni foam to combat this problem. The mixed transition metal hydroxide, Ni-Mn-Co(OH)2, was synthesized using a one-pot synthesis involving hydrothermal treatment. We show that simply varying the precursor concentration would lead to the formation of Ni-Mn-Co(OH)2 nanostructures having different morphologies. The resulting Ni-Mn-Co(OH)2 provides more oxidation states that can participate in the electron transfer than monoxide. Several material characterizations and electrochemical tests were performed. Moreover, we demonstrate that the novel electrode gives very excellent specific capacitance of 2,286 F/g and stability after 2,000 cycles in three electrode system.

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