FACILE PREPARATION AND CHARACTERIZATION OF GRAPHENE NANOSHEET/POLYANILINE NANOFIBER THERMOELECTRIC COMPOSITES

被引：27
作者：
Du, Yong [1 ]
Cai, Kefeng [1 ,2 ]
Shen, Shirleyzhiqi [3 ]
机构：
[1] Tongji Univ, Funct Mat Res Lab, Shanghai 200092, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[3] CSIRO, Mat Sci & Engn Div, Clayton, Vic 3169, Australia
来源：
FUNCTIONAL MATERIALS LETTERS | 2013年 / 6卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Graphene nanosheet; polyaniline nanofiber; thermoelectric properties; composite; POLYANILINE NANOFIBERS; INTERFACIAL POLYMERIZATION; NANOCOMPOSITES; GROWTH;
D O I：
10.1142/S179360471340002X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Graphene nanosheet (GNs)/polyaniline (PANI) nanofiber composites were prepared by oxidative polymerization of aniline in a GNs dispersed 1 mol/L HCl solution. The phase composition of the composites was analyzed by Fourier Transform Infrared Spectroscopy and X-ray Diffraction. The thermoelectric properties of the composite powders, after cold pressing into pellets, were measured at room temperature. As the content of GNs increased from 0 to 40 wt.%, the electrical conductivity and Seebeck coefficient of the composite pellets increased simultaneously; especially the electrical conductivity increased dramatically from 15.4 to 120.1 S/cm. The highest power factor (similar to 394.4 x 10(-8) Wm(-1)K(-2)) was obtained from the 40 wt.% GNs/PANI composite sample, which is similar to 200 times as high as that of HCl-doped PANI.
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页数：6
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