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Preparation of Polypyrrole Composites and Application in the Supercapaitor

Author: WangZuoZuo
Tutor: LiuPeng
School: Lanzhou University
Course: Polymer Chemistry and Physics
Keywords: polypyrrole anthraquinone derivatives samarium oxide attapulgite rhodanmine B supercapacitors
CLC: TB332
Type: Master's thesis
Year: 2012
Downloads: 266
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Abstract


Supercapacitors provide an attractive alternative to batteries for electrical energy storage due to their high power densities while maintaining sufficient energy storage. Polypyrrole is one of the most widely investigated conducting polymers which are favorable for various applications such as metallization of dielectrics, batteries, antistatic coatings, shielding of electromagnetic interference, sensors, actuators, and microactuators because of its good thermal and environmental stability and good electrical conductivity.In this paper, the polypyrrole (PPy) materials with different morphologies were prepared via the chemical oxidative polymerization of pyrrole in the presence of two anthraquinone derivatives as the dopant and surfactant. With the content of anthraquinone derivatives changing, the resultant composite materials with clusters of nanofibers, nanorods and plate-like morphologies were observed by transmission electron microscope (TEM) and field emission scanning electron microscope (SEM). The anthraquinone derivatives doped polypyrrole (PPy/Acid blue) composite materials were characterized with Fourier transform infrared, UV-vis, thermogravimetric analysis and electricconductivity.Polypyrrole/Samarium oxide (PPy/Sm2O3) composites were synthesized by the in situ chemical oxidative polymerization method based on the self-assemble of pyrrole on the surface of the amine-functionalized Sm2O3. The characterizations of the structure and morphology of the PPy/Sm2O3composites were carried out using transmission electron microscope. And the composite materials were characterized with Fourier transform infrared, UV-vis, thermogravimetric analysis, X-ray diffraction, and electricconductivity. The electrochemical behaviors of the PPy/Sm2O3composites were investigated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge.Polypyrrole/Attapulgite (PPy/ATP) composites were synthesized by the in situ chemical oxidative polymerization method based on the self-assemble of pyrrole on the surface of the rhodanmine B modified ATP. The characterizations of the structure and morphology of the PPy/ATP composites were carried out using transmission electron microscope. And the composite materials were characterized with thermogravimetric analysis, X-ray diffraction, and electricconductivity. The electrochemical behaviors of the PPy/ATP composites were investigated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge.

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