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研究生:藍怡平
研究生(外文):Yi-Ping Lan
論文名稱:氧化鐵薄膜超高電容器之製備與分析
論文名稱(外文):Synthesis and Characterization of Fe3O4 Thin-Film Supercapactor
指導教授:吳乃立
指導教授(外文):Nai-Lih Wu
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:化學工程學研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:81
中文關鍵詞:超高電容器氧化鐵腐蝕鐵鹽電鍍法偽電容
外文關鍵詞:supercapacitorsFe3O4corrosionferrite platingpesudocapacitors
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摘要
由於超高電容器的電容值主要受限於表面的電極材料,所以在本研究主要在致力於發現一個低價位和環保的電極材料,可有效利用在商業化。在材料的選定以氧化鐵(Fe3O4)為主,我們製備此種電極材料用在腐蝕法與鐵鹽電鍍法,探討在不同條件下對於電極性質之影響。研究結果顯示,以腐蝕方法其黑色氧化液含Cr之Cr-氧化鐵薄膜電極在Na2SO3 1M電解液之電容值最高,可達0.15F/cm2,但其操作電壓受限於鐵片範圍為正負0.6V,在鐵鹽電鍍法製備氧化鐵薄膜電極,我們將鐵片基材去除,在Na2SO3 1M電解液之電容值達0.06F/cm2,其操作電壓受範圍大於腐蝕方法為正負0.8V。偽電容的材料通常用於昂貴的金屬氧化物質,如RuO2。現在我們初步嘗試發現新的低成本材料應用在超高電容上,期待有更進一步的研究。
Abstract
Because of the capacitors of the supercapacitance is limited by electrode material. In this thesis is devoted to the discovery of an inexpensive and environmentally benign electrode material to commercialize. The materials are selected from Fe3O4 (magnetite). We prepared electrode material for corrosion method and electrode plating method, which insist to characterize the properties of these electrodes in different conditions.The results show that the corrosion method, which exhibits a capacitance 0.15F/cm2 with an operating voltage is limited by iron plate range up to 0.6V in Na2SO3 electrolytes. And the electrode platting method prepare Fe3O4 film electrode material, to remove iron plate, which exhibits a capacitance 0.06F/cm2 with an operating voltage is rather than corrosion method range up to 0.8V in Na2SO3 electrolytes. Pseudocapacitance used to be known a few precious metal oxides, such as RuO2. So we are discovery a new low-cost material in application of supercapacitance.
目錄
中文摘要………………………………………………………………..I
英文摘要………………………………………………………………..II
目錄…………………………………………………………………….III
圖表索引………………………………………………………………..V
第一章 緒論 1
第二章 理論文獻回顧 2
2-1 超高電容器之簡介 2
2-1-2 超高電容器之構造 4
2-1-3 電極材料 5
2-1-4電解液 6
2-2 四氧化三鐵之簡介 8
2-3 四氧化三鐵的應用 11
2-4 腐蝕 13
2-5鐵鹽電鍍 16
2-6 鐵鹽電鍍的方法 22
2-7 研究目的 22
第三章 實驗方法 24
3-1 實驗藥品 24
3-2 腐蝕法製備Fe3O4 薄膜電極 26
3-3 鐵鹽電鍍法製備Fe3O4 薄膜電極 27
3-4 樣品之基本物性分析 30
3-5 超高電容器之電性分析 32
第四章 結果與討論 35
4-1 腐蝕-氧化鐵薄膜電極 35
4-1-1 材料性質分析 36
4-1-2 電容特性之檢測 39
4-1-2-1 Cr/unCr氧化鐵薄膜電性分析 40
4-1-2-2 Cr/unCr氧化時間的比較 42
4-1-2-3 掃瞄速率之效應 45
4-1-2-4 電解液之效應 48
4-1-2-5 氧氣之效應 58
4-1-2-6 加入抗凍劑之效應 60
4-2 鐵鹽電鍍法製備氧化鐵薄膜電極 62
4-2-1 材料性質分析 62
4-2-2電容特性之檢測………………………………………….72
4-3 結論與建議 76
第五章 參考文獻 78
第五章 參考資料
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