Three-dimensional reduced graphene oxide/polyaniline nanocomposite film prepared by diffusion driven layer-by-layer assembly for high-performance supercapacitors

被引:137
作者
Hong, Xiaodong [1 ]
Zhang, Binbin [2 ]
Murphy, Elizabeth [2 ]
Zou, Jianli [2 ]
Kim, Franklin [2 ]
机构
[1] Liaoning Tech Univ, Coll Mat Sci & Engn, Fuxin 123000, Peoples R China
[2] Kyoto Univ, Inst Integrated Cell Mat Sci WPI iCeMS, Kyoto 6068501, Japan
基金
中国国家自然科学基金;
关键词
Diffusion driven layer-by-layer assembly; Polyaniline; Supercapacitor; Graphene oxide; OXIDE SHEETS; POLYANILINE; COMPOSITE; FABRICATION; REDUCTION; NANOSTRUCTURES; NANOSHEETS;
D O I
10.1016/j.jpowsour.2017.01.034
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
As a simple and versatile method, diffusion driven Layer-by-Layer assembly (dd-LbL) is developed to assemble graphene oxide (GO) into three-dimensional (3D) structure. The assembled GO macrostructure can be reduced through a hydrothermal treatment and used as a high volumetric capacitance electrode in supercapacitors. In this report we use rGO framework created from dd-LbL as a scaffold for in situ polymerization of aniline within the pores of the framework to form rGO/polyaniline (rGO/PANI) composite. The rGO/PANI composite affords a robust and porous structure, which facilitates electrolyte diffusion and exhibits excellent electrochemical performance as binder-free electrodes in a sandwich configuration supercapacitor. Combining electric double layer capacitance and pseudo-capacitance, rGO/PANI electrodes exhibit a specific capacitance of 438.8 F g(-1), at discharge rate of 5 mA (mass of electrodes were 10.0 mg, 0.5 A g(-1)) in 1 mol L-1 H2SO4 electrolyte; furthermore, the generated PANI nanoparticles in rGO template achieve a higher capacitance of 763 F g(-1). The rGO/PANI composite electrodes also show an improved recyclability, 76.5% of capacitance retains after recycled 2000 times. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:60 / 66
页数:7
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