Number：

04097052

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Name：

劉啟昌

Titles：

Associate professor

Author：

林群証、劉啟昌、梁元彰、郭晉全

Paper name：

P19 退火熱處理對Mn-Ni二元氧化物擬電容特性之影響

Name of activity：

大葉大學奈米科技研討會

Keywords：退火熱處理，擬電容器，Mn-Ni混合氧化物

Abstract：本研究以循環狀伏安法沉積Mn-Ni混合氧化物(Mn-Ni oxide, MNO)電極，接著在大氣氣氛下以100℃、200℃及300℃進行退火處理4小時，MNO電極的化學成分與表面形貌分別使用X光繞射儀(XRD)，掃描式電子顯微鏡(SEM)及能量散佈光儀(EDS)進行研究探討，使用X光光電子能譜儀(XPS)了解MNO店及氧化態的變化，而MNO電極的電容特性則是使用循環伏安法在0.5MNaC1溶液中進行評估，結果顯示，未施加退火處理的MNO電極比電容值約為72F/g，而MNO電極經由100℃退火處理可使比電容值提升到81F/g。另一方面，100℃的退火處理也可以提升電容的穩定性。在500次循環試驗後，比較未退火之電極，MNO電極退火100℃後的比電容值衰退程度可降低為10%。而當MNO退火溫度高於200℃且執行500次循環試驗後，比電容值衰退程度幾乎接近0%，但是卻會造成比電容值減少。因此可知，施加100℃退火處理的MNO電極為一個具有優良店容特性及穩定性的電話學電容器。

In this study, the Mn-Ni mixed oxide (MNO) electrodes were electrochemically deposited by the cyclic voltammetry, and then MNO electrodes were annealed at 100℃,200℃ and 300℃ for 4hours under air atmosphere. The chemical composition and surface morphologies were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). The oxidation states of MNO electrodes were studied by X-ray photoelectron spectroscopy (XPS), and the capacitive characteristics of MNO electrode were investigated by cyclic voltammetry (CV) in the 0.5M NaCl solution. As the result, the as-deposited MNO electrode has the specific capacitance value of around 72F/g. Morcover, the specific capacitance value of MNO electrode annealed at 100℃ wave raised to 81F/g. The capacitive stability of MNO electrode was improved with the thermal annealing at 100℃. The capacitance value was docrcased about 10% after.

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