聚吡咯/石墨烯奈米複合材料之結構及其電容效能研究

Study on structure and electrochemical storage properties of polypyrrole/graphene nanocomposite

林詩穎(Shih-Ying Lin)

指導教授 ： 廖建勛

元智大學/工程學院/化學工程與材料科學學系/碩士(2013年)

https://doi.org/10.6838/YZU.2013.00206

摘要

本研究使用原位聚合法合成氧化石墨烯/聚吡咯奈米複合材料。改變吡咯和氧化石墨烯的比例，發現複合材料結構會隨著添加比例的不同而改變。另外，在合成複合材料時添加十六烷基三甲基溴化銨（CTAB），改變聚吡咯型態得到聚吡咯納米線。最後為了減少反應時間，利用微波輔助方法合成氧化石墨烯/聚吡咯奈米複合材料，使合成時間從24小時變成10分鐘。經由傅立葉變換紅外光譜法、拉曼光譜、熱重量分析儀、X-射線衍射和掃描電子顯微鏡鑑定複合材料的結構和性質。由電化學測試，發現使用原位聚合法合成的氧化石墨烯/聚吡咯=1：3時，在電流密度為0.5A/g有最大電容值308 F/g。且經由微波輔助合成的氧化石墨烯/聚吡咯奈米複合材料也在氧化石墨烯/聚吡咯=1：3時，在電流密度為0.5A/g有最大電容值281 F/g。

關鍵字

聚吡咯 ； 石墨烯 ； 超級電容

並列摘要

In this study, graphene oxide/polypyrrole nanocomposite was prepared by in-situ polymerization. As the ratio of pyrrole/GO is changing, results in various composite structures. In addition, a surfactant of hexadecyl trimethyl ammonium bromide (CTAB) used in the preparation composite promotes the formation of PPy nanowire. To shorten reaction time, the GO-PPy composites were synthesized using microwave-irradiation that greatly reduced reaction time from 24 h to 10 min. All structure and properties were analyzed via Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, thermogravimetry analysis (TGA), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Finally, the electrochemical property of GOPPys, GCTPPys and MWGOPPy composite was analyzed by CHI electrochemical analyze. The GOPPy13 and MWGOPPy13 had the highest specific capacitance of 308F/g and 281F/g at a current density of 0.5 A/g.

並列關鍵字

polypyrrole ； graphene ； supercapacitors

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