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姓名 趙家崢(Chia-Cheng Chao) 查詢紙本館藏 畢業系所 化學學系 論文名稱 導電高分子應用於鋁質電解電容器之研究
(Application of aluminum electrolyte capacitor with conducting polymer)相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 以導電性高分子為固態電解質之鋁電解電容器具有高頻特性佳、溫度穩定性高、壽命長及可小型化等優點，但由於電解質與載體間的附著度不佳，產生所謂的界面損失，以及高分子電解質的導電度低，使得電容器的內電阻提高，而降低電容器的工作效率。為製備良好的高分子鋁電解電容器，本研究採用四種策略來改善上述缺點：(1)利用不同的修飾分子修飾氧化鋁載體，藉由氧化鋁的修飾來提高導電高分子與氧化鋁之間的附著度；(2) 藉由苯胺聚合時加入不同比例的有機溶劑，減緩聚合速率使所沈積的聚苯胺膜較緻密，降低電容元件之阻抗；(3)利用不同的酸摻雜高分子膜，提升高分子膜的導電度，降低電容元件之阻抗；(4)使用多次聚合來提高高分子在載體上的披覆率以提高電容元件之電容量。實驗結果發現，介電層以有機羧酸分子或有機磷酸分子修飾可改善電容器之界面阻抗，進而降低其DF值。在聚合時加入少許的有機溶劑(乙醇)，使聚合出之聚苯胺膜較緻密，亦可降低其DF值。多次聚合可有效的增進聚苯胺於載體上的披覆率，可使元件之電容量有明顯的提升。 摘要(英) Aluminum electrolyte capacitors with conducting polymer as a solid electrolyte has the advantages of high frequency characteristic, high thermal stability, long life-time, and miniaturizeable potentials. However, due to the poor adhesion between electrolyte and substrate, the so-call interface loss occurs. Moreover, the relatively low conductivity of the conducting polymer cause the higher internal resistance, affects the performance of the capacitor. In this study, we propose four methods to solve these problems. They are: (1) Modified the dielectric layer with organic compound to improve the adhesion between polymer and dielectric layer; (2) Adding organic solvent to decrease the rate of polymerization. Therefore, the denser polymer film was formed, the resistance of the capacitor will be reduced; (3) Choosing proper doping acid to increase the conductivity of polyaniline, reduce the resistance of the capacitor; (4) Using multiple-step polymerization/deposition procedure to increase the coverage of the polyaniline films, increasing the capacitance of the capacitor. The results showed that the modification of dielectric layer with organic carboxylic acid or organic phosphobic acid can improve the adhesion between polymer electrolyte and dielectric layer, decreasing the internal resistance and DF value of the capacitor. Adding small amount of organic solvent (alcohol) during the polymerization/deposition process can also decrease the DF value of the capacitor. Furthermore, using multiple-step polymerization/deposition procedure can improve the coverage of the polyaniline films therefore, increase the capacity significantly. 關鍵字(中) ★ 導電高分子
★ 聚苯胺
★ 分子自我組裝
★ 鋁電解電容器關鍵字(英) ★ aluminum electrolyte capacitor
★ conducting polymer
★ polyaniline
★ self-assembly論文目次 總目錄:
緒論………………………………………………………………………1
1-1 前言…………………………………………………………………1
1-2-1 電容器發展歷史…………………………………………………1
1-2-2 電容器之基本構造與原理………………………………………4
1-2-3 電容器發展現況與種類…………………………………………6
1-2-4 電容器之電容量………………………………………………14
1-2-5 電容器之阻抗…………………………………………………15
1-2-6 固態電解質之發展……………………………………………17
1-3-1 有機共軛高分子的歷史發展…………………………………23
1-3-2 有機共軛高分子的特性………………………………………24
1-3-3 有機共軛高分子的導電機構…………………………………24
1-3-4 導電高分子的應用……………………………………………25
1-4-1 有機共軛高分子-聚苯胺………………………………………25
1-4-2 聚苯胺的導電機構……………………………………………26
1-5 分子自我組合……………………………………………………28
1-6 自組裝分子單層膜之應用………………………………………30
1-7 研究動機…………………………………………………………31
實驗內容………………………………………………………………32
2-1 藥品………………………………………………………………32
2-2 本文中縮寫所代表的意義………………………………………33
2-3 實驗流程…………………………………………………………35
2-3-1 鋁箔化成步驟…………………………………………………35
2-3-2 Al2O3載體的表面修飾…………………………………………36
2-3-3 在修飾後之Al2O3載體上直接聚合聚苯胺膜…………………36
2-3-4 HCl、CSA、MSA摻雜過程………………………………………38
2-3-5 電容器元件樣品製備及測試流程……………………………38
2-4 儀器分析與樣品製備……………………………………………39
2-4-1 紫外光/可見光/近紅外光光譜…………………………………39
2-4-2 化學分析電子分光儀…………………………………………40
2-4-3 輕敲式原子力顯微鏡…………………………………………40
2-4-4 掃瞄式電子顯微鏡……………………………………………41
2-4-5 紅外光吸收光譜儀……………………………………………42
2-4-6 表面膜厚測量儀………………………………………………44
2-4-7 四點探針導電度計……………………………………………44
2-4-8 熱重分析儀……………………………………………………46
結果與討論……………………………………………………………47
3-1 化成鋁箔的厚度測量……………………………………………47
3-2 聚苯胺反射式IR的測量…………………………………………48
3-3 聚苯胺膜厚的測量………………………………………………49
3-4 氧化鋁載體的SEM表面型態圖…………………………………52
3-5 氧化鋁載體的DFM圖及Phase (相)圖……………………………53
3-6 修飾分子修飾於氧化鋁粉末之IR吸收光譜分析………………56
3-7 修飾前後氧化鋁箔之ESCA縱深分析……………………………58
3-8 載體修飾前後的接觸角測量……………………………………60
3-9 聚苯胺膜與載體之間的附著度比較……………………………61
3-10 修飾與否對聚苯胺膜沈積的影響………………………………63
3-11 HCl、CSA、MSA摻雜聚苯胺膜之摻雜難易度探討……………66
3-12 四點探針導電度測量……………………………………………68
3-13 電容器性質測試…………………………………………………68
3-13-1 多次聚合對聚苯胺披覆率的影響……………………………70
3-13-2 不同質子酸摻雜聚苯胺膜之電容元件性質探討……………73
3-13-3 不同質子酸聚合聚苯胺膜之電容元件性質探討……………76
3-13-4 聚合時加入有機溶劑對聚苯胺電解質電容器之影響………77
3-13-5 氧化鋁介電層的修飾對聚苯胺電解質電容器之影響………79
3-13-6 苯胺聚合反應溫度對所製成之聚苯胺電解質電容器性質之影
響………………………………………………………………87
3-13-7 多次聚合時之聚合溫度及有機溶劑添加過程對電容器之影響
…………………………………………………………………88
3-14 添加不同聚合條件下之聚苯胺熱重分析………………………90
結論……………………………………………………………………92
參考文獻………………………………………………………………93
附錄……………………………………………………………………97參考文獻 參考文獻
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