以電聚合法製備苯胺及N-苯基甘胺酸共聚物作為固態電容電解質

Using Aniline and N-phenylglycine copolymer for solid capacitors by electropolymerization.

陳偉民(Wei-Min Chen)

指導教授 ： 段葉芳

國立臺北科技大學/工程學院/化學工程研究所/碩士(2008年)

摘要

新世代的鋁電解電容開始採用具有高導電度及優異熱定性之導電高分子材料做為固態電解質，代替傳統式鋁電解電容內的電解液，大幅改善傳統鋁電解電容之缺點並展現出極為優異的電氣特性與可靠度，例如導電性高分子固態電容器不受溫度之影響；具備極為優異的使用壽命。因此導電高分子固態電容已成為下一代固態電容的開發主流；而隨著電子產品的輕薄趨勢，電容的晶片化也日趨重
要。
目前大部分導電高分子均是以化學合成法合成,合成時間長且純度不高。本研究是以電聚合的方式,來製備苯胺及N-苯基甘胺酸共聚物作為固態電容之有機半導體電解質。以同樣的量來比較,時間可相差3倍以上。實驗中藉由改變苯胺及 N-苯基甘胺酸的比例及不同的酸性環境如鹽酸,硫酸,硝酸,磷酸等.觀察電容值的變化再以SEM ,IR, UV ,TGA ,電容儀,交流阻抗儀等,觀察及檢測其性質。
實驗結果表示，聚合物在每種酸的掺雜下，裂解溫度均不一樣，但是都有超過錫爐的溫度，每種酸的形貌，在同樣濃度下也有不一樣的表現。而在電容特性表現部分，電容值會隨著共聚物的量增加而增加，而交流阻抗部份則是在2.5V
附近最為穩定。

關鍵字

固態電容 ； 電化學聚合 ； 苯胺 ； N-苯基甘胺酸

並列摘要

Recently， the most conductive polymer are made by chemosynthesis. It takes time and impurity. Polyaniline (Ani) and N-phenylglycine (PG) were syntheized by electropolymerization. The kind of dopant that were used will also affect the synthesis process, as much as, the intrinsic polymer properties. We were using various acid medium (Doping acid) such as Hydrochloric acid, Sulfuric acid, Nitric acid and Phosphorous acid. And control the ratio of Ani and PG to prepare the copolymer film. Finally, we use SEM, IR, UV, TGA, capacitance meter, and Frequency Response
Analyzer to observe the properties.
The data shows the fact that the polymer’s decomposing temperature of diverse acids are different. The decomposing temperature is 280℃.Which means this material can pass the stannum oven. And the morphologies are not the same in diverse acids.
The part of capacitor’s characterization, capacitance will increase by the polymer
amount. And the Frequency Response Analyzer(Fra) section shows that the stable
voltage is 2.5V.

並列關鍵字

Solid capaccitor ； Electropolymerization ； Aniline ； N-phenylglycin

參考文獻

[1]. A. J. Bard and L. R. Faulkner, “Electrochemical Methods, Fundamentals and Applications”, John Wiley & Sons, Singapore (1980).

[2]. D. Pletcher,“A First Course in Electrode Processes”, The Electroche mical Consultancy,England (1991).

[4]. D. Pletcher and F. C. Walsh, “Industrial Electrochemistry”, Chapman and Hall Ltd. N.Y. (1990).

[5]. J. L. Bredas and G. B. Street, Acc. Chem. Res. 18 (1985) 309.

[7]. R. S. Nicholson and I. Shain, Anal. Chem. 36 (1964) 706-723.