Supercapacitor electrodes based on polyaniline-silicon nanoparticle composite

被引：58
|
作者：
Liu, Qiang [1 ]
Nayfeh, Munir H. [2 ]
Yau, Siu-Tung [1 ]
机构：
[1] Cleveland State Univ, Dept Elect & Comp Engn, Cleveland, OH 44115 USA
[2] Univ Illinois, Dept Phys, Urbana, IL 61801 USA
来源：
JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 12期
关键词：
Supercapacitor; Composite material; Nanoparticle;
D O I：
10.1016/j.jpowsour.2009.12.042
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A composite material formed by dispersing ultrasmall silicon nanoparticles in polyaniline has been used as the electrode material for supercapacitors. Electrochemical characterization of the composite indicates that the nanoparticles give rise to double-layer capacitance while polyaniline produces pseudocapacitance. The composite shows significantly improved capacitance compared to that of polyaniline. The enhanced capacitance results in high power (220 kW kg(-1)) and energy-storage (30 Wh kg(-1)) capabilities of the composite material. A prototype supercapacitor using the composite as the charge storage material has been constructed. The capacitor showed the enhanced capacitance and good device stability during 1000 charging/discharging cycles. (C) 2010 Published by Elsevier B.V.
引用
收藏
页码：3956 / 3959
页数：4
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