Synthesis and Electrochemical Performance of Polypyrrole-Coated Iron Oxide/Carbon Nanotube Composites

被引：13
|
作者：
Kim, Dae-Won [1 ,2 ]
Kim, Ki-Seok [1 ,2 ]
Park, Soo-Jin [1 ,2 ]
机构：
[1] Inha Univ, Dept Chem, Inchon 402751, South Korea
[2] Korea Inst Energy Res, Korea CCS R&D Ctr, Taejon 305343, South Korea
来源：
CARBON LETTERS | 2012年 / 13卷 / 03期
关键词：
multi-walled carbon nanotube; iron oxide; polypyrrole; supercapacitor; CARBON NANOTUBES; TEMPERATURE; CAPACITANCE; MAGNETITE; ELECTRODE;
D O I：
10.5714/CL.2012.13.3.157
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this work, iron oxide (Fe3O4) nanoparticles were deposited on multi-walled carbon nanotubes (MWNTs) by a simple chemical coprecipitation method and Fe3O4-decorated MWNTs (Fe-MWNTs)/polypyrrole (PPy) nanocomposites (Fe-MWNTs/PPy) were prepared by oxidation polymerization. The effect of the PPy on the electrochemical properties of the Fe-MWNTs was investigated. The structures characteristics and surface properties of MWNTs, Fe-MWNTs, and Fe-MWNTs/PPy were characterized by X-ray diffraction and X-ray photoelectron spectroscopy, respectively. The electrochemical performances of MWNTs, Fe-MWNTs, and Fe-MWNTs/PPy were determined by cyclic voltammetry and galvanostatic charge/discharge characteristics in a 1.0 M sodium sulfite electrolyte. The results showed that the Fe-MWNTs/PPy electrode had typical pseudo-capacitive behavior and a specific capacitance significantly greater than that of the Fe-MWNT electrode, indicating an enhanced electrochemical performance of the Fe-MWNTs/PPy due to their high electrical properties.
引用
收藏
页码：157 / 160
页数：4
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