Graphene nanoplatelets supported MnO2 nanoparticles for electrochemical supercapacitor

被引：49

作者：

Yu, Aiping ^{[1
]}

Sy, Abel ^{[1
]}

Davies, Aaron ^{[1
]}

机构：

[1] Univ Waterloo, Waterloo Inst Sustainable Energy, Waterloo Inst Nanotechnol, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

SYNTHETIC METALS | 2011年 / 161卷 / 17-18期

关键词：

Graphene; Nanoplatelets; MnO2; nanoparticles; Supercapacitor; MANGANESE OXIDE; COMPOSITES; ELECTRODES; PERFORMANCE; CAPACITORS;

D O I：

10.1016/j.synthmet.2011.04.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, a novel high-performance electrode material based on MnO2 nanoparticles coated onto recently discovered 2-D graphene nanoplatelets was fabricated by a hydrothermal method be used as composite for supercapacitor electrode. The maximum capacitance and energy density obtained for this nanocomposite were 542 F/g and 75.3 Wh/kg at a scan rate of 0.01 V/s in 2 M KCl. These impressive results were attributed to a synergistic effect between GNPs and MnO2 which combine the remarkable electrical conductivity of GNPs with the high pseudocapacitance of the MnO2 nanoparticles. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2049 / 2054

页数：6

共 22 条

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