Graphene/MnO2 hybrid nanosheets as high performance electrode materials for supercapacitors

Mondal Anjon Kumar; Wang Bei; Su DaweiWang YingChen ShuangqiangZhang XiaogangWang Guoxiu

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Graphene/MnO2 hybrid nanosheets as high performance electrode materials for supercapacitors

机译：Graphene/MnO2 hybrid nanosheets as high performance electrode materials for supercapacitors

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Graphene/MnO2 hybrid nanosheets were prepared by incorporating graphene and MnO2 nanosheets in ethylene glycol. Scanning electron microscopy and transmission electron microscopy analyses confirmed nanosheet morphology of the hybrid materials. Graphene/MnO2 hybrid nanosheets with different ratios were investigated as electrode materials for supercapacitors by cyclic voltammetry (CV) and galvanostatic charge-discharge in 1 M Na2SO4 electrolyte. We found that the graphene/MnO2 hybrid nanosheets with a weight ratio of 1:4 (graphene:MnO2) delivered the highest specific capacitance of 320 F g(-1). Graphene/MnO2 hybrid nanosheets also exhibited good capacitance retention on 2000 cycles. (C) 2013 Elsevier B.V. All rights reserved.

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来源
《Materials Chemistry and Physics》 |2014年第2期|740-746|共7页
作者
Mondal Anjon Kumar; Wang Bei; Su DaweiWang YingChen ShuangqiangZhang XiaogangWang Guoxiu;
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作者单位

Univ Technol Sydney, Sch Chem & Forens Sci, Ctr Clean Energy Technol, Sydney, NSW 2007, Australia;

Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Engn, Nanjing, Jiangsu, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程基础科学;工程材料学;
关键词
Composite materials; Electron microscopy; Crystal structure; Electrochemical properties; ELECTROCHEMICAL PROPERTIES; HYDROTHERMAL SYNTHESIS; MANGANESE OXIDE; NICKEL-OXIDE; MNO2; ENERGY; COMPOSITES; STORAGE; ULTRACAPACITORS; CAPACITANCE;

Graphene/MnO2 hybrid nanosheets as high performance electrode materials for supercapacitors

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