Synthesis of polypyrrole-reduced graphene oxide composites by in-situ photopolymerization and its application as a supercapacitor electrode

Hai Dinh Pham; Viet Hung Pham; Eun-Suok Oh; Jin Suk Chung; Sunwook Kim

Korean Journal of Chemical Engineering, Vol.29, No.1, 125-129, January, 2012

DOI10.1007/s11814-011-0145-y Export Citation

Synthesis of polypyrrole-reduced graphene oxide composites by in-situ photopolymerization and its application as a supercapacitor electrode

Hai Dinh Pham, Viet Hung Pham, Eun-Suok Oh , Jin Suk Chung , and Sunwook Kim^†

School of Chemical Engineering and Bioengineering, University of Ulsan, Ulsan 680-749, Korea

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A highly conductive polypyrrole (PPy)-reduced graphene oxide (RGO) composite with an electrical conductivity of 610 S m^(-1) was successfully synthesized by the in-situ photopolymerization of pyrrole in a graphene oxide suspension. Graphene oxide (GO) played the role of an electron acceptor and was reduced as it accepted electrons. The reduction of GO was confirmed by the increase in the C/O ratio of RGO with the UV irradiation time as well as the high electrical conductivity of PPy-RGO composite. Through the thermogravimetric analysis, it has been found that the PPy-RGO composite exhibited high thermal stability compared to the GO and PPy. This material was used as an electrode in a supercapacitor cell and showed excellent performance for electrical energy storage. The composite exhibited a specific capacitance of 376 F g^(-1) at a scan rate of 25 mV s^(-1).

Keywords:Polypyrrole;Graphene Oxide;Photopolymerization;Supercapacitor;Electrode

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[3] Park S, Ruoff RS, Nature Nanotechnol., 4, 217 (2009)

[4] Stankovich S, Dikin DA, Dommett GHB, Kohlhaas KM, Zimney EJ, Stach EA, Piner RD, Nguyen SBT, Ruoff RS, Nature., 442, 282 (2006)

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[8] Yan J, Wei T, Shao B, Fan Z, Qian W, Zhang M, Wei F, Carbon., 48, 487 (2010)

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[10] An KH, Jeon KK, Heo JK, Lim SC, Bae DJ, Lee YH, J. Electrochem. Soc., 149, 1058 (2002)

[11] Biswas S, Drzal LT, Chem. Mater., 22, 5667 (2010)

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[13] Park S, An J, Jung I, Piner RD, An SJ, Li X, Velamakanni A, Ruoff RS, Nano Lett., 9, 1593 (2009)

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[20] Stoller MD, Ruoff RS, Energy Environ. Sci., 3, 1294 (2010)

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