Synthesis and electrochemical properties of graphene/V2O5 xerogels nanocomposites as supercapacitor electrodes

被引：54

作者：

Xu, Jie ^{[1
]}

Sun, Huajun ^{[1
]}

Li, Zhaolong ^{[1
]}

Lu, Shan ^{[1
]}

Zhang, Xiaoyan ^{[1
]}

Jiang, Shanshan ^{[1
]}

Zhu, Quanyao ^{[1
]}

Zakharova, Galina S. ^{[2
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620219, Russia

来源：

SOLID STATE IONICS | 2014年 / 262卷

基金：

俄罗斯基础研究基金会; 中国国家自然科学基金;

关键词：

Graphene/V2O5 xerogels nanocomposites; Supercapacitor; Electrochemical property; HIGH-PERFORMANCE SUPERCAPACITORS; VANADIUM-OXIDE NANOWIRE; CARBON NANOTUBES; ENERGY-STORAGE; COMPOSITES; CAPACITORS;

D O I：

10.1016/j.ssi.2013.10.060

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：

The graphene/V2O5 xerogels nanocomposites were synthesized by the hydrothermal method. The structure of the samples was characterized by X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). The electrochemical properties of the graphene/V2O5 xerogels nanocomposites were studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge-discharge measurements as electrode materials for supercapacitor. In the graphene/V2O5 xerogels nanocomposites, graphene sheets and the layers of V2O5 xerogels (V2O5 center dot 1.6H(2)O) were stacked together. The graphene/V2O5 xerogels nanocomposites exhibited high specific capacity and high-rate capability, delivering a specific capacitance of 195.4 F/g and 184.6 F/g at the current density of 1A/g and 10 A/g between 0 and 0.65 V, respectively. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：234 / 237

页数：4

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