石墨烯接枝聚吡咯复合物的原位合成及其电容特性研究

doi:10.3724/SP.J.1077.2013.12289

摘要/Abstract

摘要：

采用化学接枝法原位合成了石墨烯接枝聚吡咯复合物, 对复合物的结构、形貌、导电率以及比电容值进行了测试和表征。结果表明制备的石墨烯接枝聚吡咯复合物中, 石墨烯与吡咯单体间产生了紧密的化学键结合, 吡咯在石墨烯层片上均匀分布, 石墨烯片层间的吡咯大量成链并与石墨烯层片相互连接, 测得复合物的电导率为3.32 S/cm, 比电容值可以达到284 F/g, 相比于纯聚吡咯的186 F/g的比电容值提高了52%, 具有优异的电容特性。

关键词: 石墨烯, 聚吡咯, 原位合成, 复合物, 比电容值

Abstract:

The graphene grafted polypyrrole composites were in situ synthesized with the chemical grafting method. The testing and characterization of the structure and morphology indicated that the pyrrole monomer in the composites was grafted with the graphene lamellar layer on-chip evenly distributed through the amide bond, and a large number of the pyrrole grow into a chain connecting to the graphene layers. The synergistic effect of graphene and polypyrrole made the conductivity of the composites significantly improve from 0.22 S/cm to 3.32 S/cm. The capacitance value of graphene grafted polypyrrole composites reached 284 F/g, which increased by 52% compared with the specific capacitance of pure polypyrrole 186 F/g. It indicated the composites’s excellent characteristics of the capacitor.

Key words: graphene, polypyrrole, in-situ synthesis, composites, specific capacitance

中图分类号:

TQ152

刘建华, 张施露, 于美, 安军伟, 李松梅. 石墨烯接枝聚吡咯复合物的原位合成及其电容特性研究[J]. 无机材料学报, 2013, 28(4): 403-408.

LIU Jian-Hua, ZHANG Shi-Lu, YU Mei, AN Jun-Wei, LI Song-Mei. Synthesis and Capacitance Characteristics of the Graphene Grafted Polypyrrole Composites[J]. Journal of Inorganic Materials, 2013, 28(4): 403-408.

图/表 7

图1 PPy (a)、G (b)和GPPy (c,d)的SEM照片

Fig. 1 SEM images of PPy (a), graphene (b) and graphene polypyrrole composite material (c,d)

图2 G (a)和GPPy (b)的TEM照片

Fig. 2 TEM images of graphene (a) and graphene polypyrrole composites (b)

图3 G和GPPy的XRD图谱

Fig. 3 XRD patterns of graphene and graphene polypyrrole composites

图4 G、PPy和GPPy样品的拉曼光谱图

Fig. 4 Raman spectra of graphene, polypyrrole and graphene polypyrrole composites

图5 (a)PPy、(b)G和(c)GPPy样品的红外光谱图

Fig. 5 FT-IR spectra of (a) polypyrrole, (b) graphene and (c) graphene polypyrrole composites

图6 反应过程图

Fig. 6 Reaction process diagram

图7 PPy、G和GPPy的恒电流充放电曲线

Fig.7 Galvanostatic charge/discharge tests for polypyrrole, graphene and graphene polypyrrole composites at a current density of 0.1 A/g

参考文献 22

[1]	Saravanan C, Shekhar R C, Palaniappan S. Synthesis of polypyrrole using benzoyl peroxide as a novel oxidizing agent. Macromolecular Chemistry and Physics, 2006, 207(3): 342-348.
[2]	Emma Jakab, Erika Mészáros, Mária Omastová. Thermal decomposition of polypyrroles. Journal of Thermal Analysis and Calorimetry, 2007, 88(2): 515-521.
[3]	Mavinakuli Pallavi, Wei Suying, Wang Qiang. Polypyrrole/Silicon carbide nanocomposites with tunable electrical conductivity. J. Phys. Chem. C, 2010, 114(9): 3874-3882.
[4]	Xie Haiming, Han Mingjuan, Yu Haiying. Synthesis of polypyrrole and electrochemical performance of doual-ion battery. Chemical Journal of Chinese Universities, 2008, 28(1): 109-112.
[5]	Meryl D. Stoller, Sungjin Park, Yanwu Zhu, et al. Graphene-based ultracapacitors. Nano Lett., 2008, 8(10): 3498-3502.
[6]	Wang Da-Wei, Li Feng, Zhao Jinping, et al. Fabrication of graphene/ polyaniline composite paper via in situ anodic electropolymerization for high-performance flexible electrode. ACS Nano, 2009, 3(7): 1745-1752.
[7]	Li Haibo, Lu Ting, Pan Likun, et al. Electrosorption behavior of graphene in NaCl solutions. J. Mater. Chem., 2009, 19(37): 6773-6779.
[8]	Kim Ki-Seok, Park Soo-Jin. Influence of multi-walled carbon nanotubes on the electrochemical performance of graphene nanocomposites for supercapacitor electrodes. Electrochim. Acta, 2011, 56(7): 1629-1635.
[9]	Han Yongqin, Hao Liang, Zhang Xiaogang, Preparationelectrochemical performances of graphite oxide/polypyrrole composites. Synth. Metals., 2010, 160(21-22): 2336.
[10]	Wang Jingping, Xu Yulong, Wang Chunxiao. Research on preparation and performance of polypyrrole/grapheme oxide composite electrode. Nanoscience and Nanotechnology, 2011(4): 1-4.
[11]	Wang Hualan, Hao Qingli, Yang Xujie, et al. Graphene oxide doped polyaniline for supercapacitors. Electrochem. Commun., 2009, 11(6): 1158-1161.
[12]	Ji Luojun. The production status of thionyl chloride and development prospects. Journalmn of Chemical Industry and Engineering, 2004, 25(3): 35-38.
[13]	Wang Hongjuan, Peng Feng. Study on esterfication and acylation modification of carbon nanotubes functionalized with carboxylic group. Carbon Techniques, 2004, 23(6): 10-12.
[14]	YUAN Xiao-Ya. Progress in Preparation of Graphene. Journal of Inorganic Materials, 2011, 26(6): 561-570.
[15]	Ramesh P, Bhagyalakshmi S, Sampath S.Preparation and physicochemical electrochemical characterization of exfoliated graphite oxide. J. Colloid Interface Sci., 2004, 274(1): 95-102.
[16]	Stankovich S, Dikin D A, Piner R D, et al. Synthesis of graphene- based nanosheets via chemical reduction of exfoliated graphiteoxide. Carbon, 2007, 45(7): 1558-1565.
[17]	Sumanta Sahoo, Karthikeyan G, Nayak Ganesh Ch. Electrochenmical characterization of in-situ polypyrrole coated graphene nanocomposites. Synthetic Metals, 2011(161): 1713-1719.
[18]	金盈, 曾广赋, 朱丹阳, 等. 聚酰胺酸结构及其亚胺化的红外光谱分析. 应用化学, 2011, 28(3): 258-262.
[19]	Surajit Konwer, Ratan Boruah, Swapan K Dolui. Studies on conducting polypyrrole/graphene oxide composites as supercapacitor electrode. Journal of Electronic Materials, 2011, 40(11): 2248-2255.
[20]	Xu C, Wang X, Zhu J W. Graphene-mental partical nanocomposites. J. Phys. Chem. C, 2008, 112(50): 19841-19845.
[21]	Goncalves G, Marques P A A P, Granadeiro Carlos M, et al. Surface modification of graphene nanosheets with gold nanoparticles:the role of oxygen moieties at graphene surface on gold nucleation and growth. Chem. Mater., 2009, 21(20): 4796-4802.
[22]	YU Mei, LIU Peng-Rui, SUN Yu-Jinget al. Fabrication and characterization of graphene-Ag nanoparticles composites. Journal of Inorganic Materials, 2012, 27(1): 89-94.