Preparation of few layer three-dimensional Graphene networks by CVD for energy storage applications

被引：1

作者：

Tang, Bo ^{[1
]}

Hu, Guoxin ^{[1
]}

机构：

[1] School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200240

来源：

Chemical Vapor Deposition | 2014年 / 20卷 / 1-3期

关键词：

Electrode; Graphene; NFR; Supercapacitor;

D O I：

10.1002/cvde.201207052

中图分类号：

学科分类号：

摘要：

Three-dimensional graphene networks (3DGNs) with a controllable number of layers (from monolayer to few layers) are fabricated by CVD on a Ni foam rod (NFR) template. The special morphology of the NFR and accompanying concentration gradients of CH4 gas provide the necessary conditions to deposit the 3DGNs with varied thicknesses on different areas of one substrate. The high conductivity, large Brunner-Emmett-Teller (BET) area, and three-dimensional network of the 3DGNs make it a potential material for use in the electrochemical field. Supercapacitors with the 3DGNs-based electrode show a high energy density∼34.2Whkg-1 at a current density of 100mAg-1, and a specific capacitance of 246 F g-11 is obtained in a 30 wt.-% KOH aqueous electrolyte solution. Moreover, the resultant devices maintain high performances under high current density conditions, indicating the outstanding stability of the prepared 3DGNs. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：14 / 22

页数：8

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