Nickel oxide/graphene aerogel nanocomposite as a supercapacitor electrode material with extremely wide working potential window

被引：43
|
作者：
Chen, Wei [1 ]
Gui, Dayong [1 ]
Liu, Jianhong [1 ]
机构：
[1] Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518060, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2016年 / 222卷
关键词：
Graphene aerogel; Nickel oxide; Nanocomposite; Supercapacitors; REDUCED GRAPHENE OXIDE; ELECTROCHEMICAL CAPACITORS; PERFORMANCE; COMPOSITES; NANOWIRES; DEVICES;
D O I：
10.1016/j.electacta.2016.11.120
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Three-dimensional nickel oxide/graphene aerogel nanocomposites (NiO/GA) were synthesized via a simple solvothermal-induced self-assembly process. The structural and morphological properties of the NiO/GA were characterized with XRD, FE-SEM and TEM measurements. The nickel oxide was electrochemically deposited into the highly porous GA to form NiO/GA composites. In the three-electrode system, an extremely wide working potential window was observed from -1 to 1 V in 6 M aqueous KOH. A specific capacitance as high as 587.3 F g(-1) was obtained at a constant current density of 1 Ag-1. More importantly, the cycling stability of the NiO/GA was great with a tiny decay in specific capacitance after 1000 cycles at 1 Ag-1. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1424 / 1429
页数：6
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