聚吡咯／氧化石墨烯层状复合材料的制备及其在超级电容器中的应用

通过将吡咯单体在低温下与氧化石墨烯进行原位聚合，获得聚吡咯／石墨烯（Ppy／CRGO）复合材料．采用场发射电子显微镜（FESEM）、红外（FT—IR）和热重分析（TGA）对复合物的表面形貌、结构进行表征．FESEM结果表明，通过控制氧化石墨烯（GO）和吡咯单体的质量比例，可以对复合物的层状和厚度进行调控．FT—IR和TGA结果表明，聚吡咯（PPy）是通过化学键合的方式与氧化石墨烯复合在一起．通过机械冷压法将粉末状ppy／CRGO复合物压成网片电极，并探讨了石墨烯和聚吡咯复合比例、反应时间、烘干温度和孔隙率等因素对Ppy／CRGO复合物电极的电学和电化学性能的影响．结果表明，PPY与CRGO质量...

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Bibliographic Details
Published in电化学 Vol. 18; no. 4; pp. 348 - 358
Main Author 许思哲 周雪皎 吴坤 杨永强 吴海霞
Format Journal Article
LanguageChinese
Published 2012
Subjects
化学还原石墨烯
复合物
氧化石墨烯
聚吡咯
超级电容器
Online AccessGet full text
ISSN1006-3471
2993-074X

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Summary:通过将吡咯单体在低温下与氧化石墨烯进行原位聚合，获得聚吡咯／石墨烯（Ppy／CRGO）复合材料．采用场发射电子显微镜（FESEM）、红外（FT—IR）和热重分析（TGA）对复合物的表面形貌、结构进行表征．FESEM结果表明，通过控制氧化石墨烯（GO）和吡咯单体的质量比例，可以对复合物的层状和厚度进行调控．FT—IR和TGA结果表明，聚吡咯（PPy）是通过化学键合的方式与氧化石墨烯复合在一起．通过机械冷压法将粉末状ppy／CRGO复合物压成网片电极，并探讨了石墨烯和聚吡咯复合比例、反应时间、烘干温度和孔隙率等因素对Ppy／CRGO复合物电极的电学和电化学性能的影响．结果表明，PPY与CRGO质量比为10：1所制得的Ppy／CRGO复合物的电容量为421F· g^ -1，通过在电极中引入孔隙，电容量能进一步提升为509F· g^ -1．
Bibliography:35-1172/06
Nanocomposites of polypyrrole （Ppy） and chemically reduced graphene oxide （ CRGO）, Ppy/ CRGO, have been fabricated through in-situ polymerization of pyrrole on graphene oxide （GO） sheets. The as-synthesized Ppy/CRGO composites were characterized complementarily using scanning electron microscopy （SEM）, tbermogravimetric analysis （TGA） and Fourier transformed infrared spectroscopy （FT-IR）. By control- ling the initial ratio of the GO to pyrrole, the layered composites could be obtained and their thickness could be tuned properly. The Ppy/CRGO electrodes were prepared using a mechanical compressing technique and their elec- trical conductivity and electrochemical properties were characterized systematically. We demonstrated that as elec-trodes for supercapacitor, the Ppy/CRGO composites with Ppy to CRGO mass ratio of 10：1 showed a competitive capacitance of 421F· g^ -1 that could be further increased to 509 F· g^ -1 by introducing pores in it, which is higher than that of Ppy alone. Given the manifest
ISSN:1006-3471
2993-074X