Self-Assembled Graphene/Carbon Nanotube Hybrid Films for Supercapacitors

被引：971

作者：

Yu, Dingshan ^{[1
]}

Dai, Liming ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2010年 / 1卷 / 02期

关键词：

FUNCTIONALIZED CARBON NANOTUBES; TRANSPARENT; OXIDE; PERFORMANCE; STORAGE;

D O I：

10.1021/jz9003137

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：

Stable aqueous dispersions of polymer-modified graphene sheets were prepared via in situ reduction of exfoliated graphite oxides in the presence of cationic poly(ethyleneimine) (PEI). The resultant water-soluble PEI-modified graphene sheets were then used for sequential self-assembly with acid-oxidized multiwalled carbon nanotubes, forming hybrid carbon films. These hybrid films were demonstrated to possess an interconnected network of carbon structures with well-defined nanopores to be promising for supercapacitor electrodes, exhibiting a nearly rectangular cyclic voltammogram even at an exceeding high scan rate of 1 V/s with an average specific capacitance of 120 F/g.

引用

页码：467 / 470

页数：4

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