A study on morphology & electric performance of PPy/Aluminum Foil laminates

• Main Authors: You-Cheng Lin, 林佑宸
• Other Authors: Hsien-Tang Chiu
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/7p3tc9

碩士 === 國立臺灣科技大學 === 高分子系 === 94 === The new generation of aluminum electrolytic capacitor begins to use conducting polymer with high conductivity and excellent thermo stability as the material of solid electrolyte instead of the electrolyte in the traditional aluminum capacitor. It greatly improves the flaw of the liquid aluminum electrolytic capacitor, and shows excellent electrical characteristic and reliability. For example, the high conductivity polymer solid capacitor is not affected by temperature, and has a very long life cycle. Therefore, the high conductivity polymer solid capacitor becomes the mainstream of development of the next generation solid capacitor. As the trend of electronic products become thinner, making capacitor to chip is important day by day. In this study, Pyrrole is used and through the chemical oxidized soaking, and the electrochemical polymerization of different electrolyte, the Polypyrrole (PPy) film electrode is formed on the forming aluminum foil. The electrical characteristic of forming aluminum foil of sandwich film layer is studied. Through the Atomic Force Microscopy (AFM), the morphology of forming aluminum foil and PPy film is observed. The Capacitance Meter (HP 4285A) is used to estimate the electrical characteristic of layer. Besides, the effect of environmental temperature is studied in order to research on the correlation between the morphology and the electrical characteristic of thelayer. The result shows that when the average roughness and surface area is larger, the series capacitance is larger. When the layer increases, the series capacitance increases and the impedance decreases. The series capacitor of PPy solid series capacitance has good thermo stability.