Self-Assembled Graphene/Polyaniline/Co3O4 Ternary Hybrid Aerogels for Supercapacitors

被引：112

作者：

Lin, Hualin ^{[1
]}

Huang, Qi ^{[1
]}

Wang, Jinzuan ^{[1
]}

Jiang, Jianzhong ^{[1
]}

Liu, Fan ^{[1
]}

Chen, Yanwei ^{[1
]}

Wang, Chi ^{[1
]}

Lu, Deli ^{[1
]}

Han, Sheng ^{[1
]}

机构：

[1] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Graphene; Polyaniline/Co3O4; nanoparticles; Ternary hybrid aerogels; Supercapacitors; HIGH-PERFORMANCE SUPERCAPACITOR; REDUCED GRAPHENE OXIDE; COMPOSITES; CO3O4; ELECTRODES; FRAMEWORKS; NANOSHEETS; REDUCTION; STORAGE;

D O I：

10.1016/j.electacta.2015.12.143

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel three-dimensional (3D) porous graphene/polyaniline/Co3O4 (GPC) ternary hybrid aerogels is firstly fabricated via self-assembly of graphene oxide/polyaniline (GO/PANI) by in situ polymerization and GO/cobalt salts hybrid sols through hydrothermal treatment. The prepared ternary hybrid aerogels features an interconnected 3D macroporous structure in which PANI/Co3O4 nanoparticles (PANI/Co3O4 NPs) with a diameter similar to 20 nm uniformly distributed on the surface of graphene nanosheets (GNs), and possesses an excellent performance with high specific capacitance of 1247 F g (1) at a current density of 1 A g (1) and the capability can reach to 755 F g (1) even at 20 A g (1). Furthermore, no obvious capacitance loss is observed during 3500 cycles, indicating an outstanding cycling stability. The extraordinary electrochemical performance of the 3D GPC hybrid can be attributed to not only the high capacitance of PANI and Co3O4 with pseudocapacitive, but also the strong synergistic effect between the uniformly dispersed PANI/Co3O4 NPs and graphene aerogel, in which a powerful 3D porous structure with short diffusion path length for fast electron transportation. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：444 / 451

页数：8

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