Preparation and optical/electrical/electrochemical properties of expanded graphite-filled polypyrrole nanocomposite

被引:42
作者
Konwer, Surajit [1 ]
Maiti, Jatindranath [1 ]
Dolui, Swapan K. [1 ]
机构
[1] Tezpur Univ, Dept Chem Sci, Tezpur 784028, Assam, India
关键词
Semiconductors; Chemical techniques; Thermogravimetric analysis (TGA); Electrical properties; BIPOLAR PLATE; COMPOSITE;
D O I
10.1016/j.matchemphys.2011.03.013
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Expanded graphite filled polypyrrole (PPy/EG) conducting composites were prepared by in situ polymerization of pyrrole by the addition of expanded graphite in various proportions (0.25%, 0.50% and 1.0%). The synthesized samples were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), ultraviolet-visible absorption (UV-vis), X-ray diffraction (XRD) and electrical conductivity measurements. FTIR spectroscopy revealed the interaction between expanded graphite and polypyrrole (PPy). PPy/EG composites showed crystalline nature with rhombohedral structure. The band gaps of pure PPy and PPy/EG composites were determined by UV-vis absorption spectrophotometry and cyclic voltammetry. The electrical conductivities of the composites were enhanced dramatically to 110.04 S cm(-1) compared to pure PPy. The composites also showed excellent electrochemical reversibility at the scan rate of 0.1 V s(-1) and maximum reversible electrochemical response intaking charge capacity almost unchanged even up to 125th cycles. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:283 / 290
页数:8
相关论文
共 37 条
[1]   Graphite/Polyaniline (GP) composites: Synthesis and characterization [J].
Bourdo, SE ;
Viswanathan, T .
CARBON, 2005, 43 (14) :2983-2988
[2]  
CHANDRASEKHAR P, 1999, CONDUCTING POLYM FUN, P381
[3]   PMMA/graphite nanosheets composite and its conducting properties [J].
Chen, GH ;
Weng, WG ;
Wu, DJ ;
Wu, CL .
EUROPEAN POLYMER JOURNAL, 2003, 39 (12) :2329-2335
[4]   A novel material obtained by electropolymerization of polypyrrole doped with [Sn(dMit)3]2-, [tris(1,3-dithiole-2-thione-4,5-dithiolato)-stannate]2- [J].
da Cruz, AGB ;
Wardell, JL ;
Rocco, AM .
SYNTHETIC METALS, 2006, 156 (5-6) :396-404
[5]   Development and characterization of expanded graphite-based nanocomposite as bipolar plate for polymer electrolyte membrane fuel cells (PEMFCs) [J].
Dhakate, S. R. ;
Shanna, S. ;
Borah, A. ;
Mathur, R. B. ;
Dhami, T. L. .
ENERGY & FUELS, 2008, 22 (05) :3329-3334
[6]   Expanded graphite-based electrically conductive composites as bipolar plate for PEM fuel cell [J].
Dhakate, S. R. ;
Sharma, S. ;
Borah, M. ;
Mathur, R. B. ;
Dhami, T. L. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (23) :7146-7152
[7]   New composite electrodes made of polypyrrole and graphite: Construction, optimization and characterization [J].
Dione, G. ;
Dieng, M. M. ;
Aaron, J. J. ;
Cachet, H. ;
Cachet, C. .
JOURNAL OF POWER SOURCES, 2007, 170 (02) :441-449
[8]   Electrically conductive polymer nanocomposites as deformation sensors [J].
Flandin, L ;
Bréchet, Y ;
Cavaillé, JY .
COMPOSITES SCIENCE AND TECHNOLOGY, 2001, 61 (06) :895-901
[9]   Synthesis of polyaniline/graphite composite as a cathode of Zn-polyaniline rechargeable battery [J].
Ghanbari, Khadijeh ;
Mousavi, Mir Fazlollah ;
Sharnsipur, Mojtaba ;
Karami, Hassan .
JOURNAL OF POWER SOURCES, 2007, 170 (02) :513-519
[10]   Electrical properties of polymer/expanded graphite nanocomposites with low percolation [J].
Goyal, R. K. ;
Samant, S. D. ;
Thakar, A. K. ;
Kadam, A. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2010, 43 (36)