A facile one-step hydrothermal method to produce α-MnO2/graphene sheet composites and its electrochemical properties

被引：45

作者：

Chen, Chunnian ^{[1
]}

Fu, Wen ^{[2
]}

Yu, Chenwei ^{[2
]}

机构：

[1] Hefei Univ Technol, Anhui Key Lab Controllable Chem React & Mat Chem, Hefei 230009, Anhui, Peoples R China

[2] Hefei Univ Technol, Dept Appl Chem, Hefei 23009, Anhui, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 82卷

关键词：

MnO2; nanotubes; Graphene oxide; Graphene sheet; Composite materials; Specific capacitance; Nanocrystalline materials; PERFORMANCES; NANOTUBES;

D O I：

10.1016/j.matlet.2012.04.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A composite of graphene sheet (GNS) supported by nanotube-like MnO2 nanocrystalline (alpha-MnO2/GNS composites) has been fabricated through a facile one-step hydrothermal method. The nanosized MnO2 particles were homogeneously distributed on GNS, which have been confirmed by transmission electron microscopy analysis (TEM). The structure, composition and electrochemical properties of alpha-MnO2/GNS composites were investigated by means of selective-area electron diffraction (SAED). Fourier transform infrared spectroscopy (FT-IR). X-ray diffraction (XRD), cyclic voltammetry (CV) curves and Galvanostatic charge-discharge curves. alpha-MnO2/GNS composites exhibited a high specific capacitance of 116 F.g(-1) in 1 M Na2SO4 electrolyte. In addition, the alpha-MnO2/GNS composite electrode shows good long-term cycle stability (only 11.99% decrease of the specific capacitance is observed after 1000 charge-discharge cycles). (C) 2012 Elsevier By. All rights reserved.

引用

页码：133 / 136

页数：4

共 22 条

[1] Synthesis of polyaniline-gold/graphene oxide composite and microwave absorption characteristics of the composite films [J].

Basavaraja, C. ;

Kim, Won Jung ;

Kim, Young Do ;

Huh, Do Sung .

MATERIALS LETTERS, 2011, 65 (19-20) :3120-3123

[2]

CHEN S, 2010, NANO, V4, P2822, DOI DOI 10.1021/NN901311T

[3] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339

[4] Enhanced supercapacitive behaviors of birnessite [J].

Komaba, Shinichi ;

Ogata, Atsushi ;

Tsuchikawa, Tomoya .

ELECTROCHEMISTRY COMMUNICATIONS, 2008, 10 (10) :1435-1437

[5] Preparation and electrochemical performances of α-MnO2 nanorod for supercapacitor [J].

Li, Yang ;

Xie, Huaqing ;

Wang, Jifeng ;

Chen, Lifei .

MATERIALS LETTERS, 2011, 65 (02) :403-405

[6] Synthesis of single-crystal tetragonal α-MnO2 nanotubes [J].

Luo, J. ;

Zhu, H. T. ;

Fan, H. M. ;

Liang, J. K. ;

Shi, H. L. ;

Rao, G. H. ;

Li, J. B. ;

Du, Z. M. ;

Shen, Z. X. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (33) :12594-12598

[7] Electrochemical properties of manganese oxide coated onto carbon nanotubes for energy-storage applications [J].

Ma, Sang-Bok ;

Nam, Kyung-Wan ;

Yoon, Won-Sub ;

Yang, Xiao-Qing ;

Ahn, Kyun-Young ;

Oh, Ki-Hwan ;

Kim, Kwang-Bum .

JOURNAL OF POWER SOURCES, 2008, 178 (01) :483-489

[8] FTIR AND C-13 NMR-STUDY OF GRAPHITE OXIDE [J].

MERMOUX, M ;

CHABRE, Y ;

ROUSSEAU, A .

CARBON, 1991, 29 (03) :469-474

[9] Electric field effect in atomically thin carbon films [J].

Novoselov, KS ;

Geim, AK ;

Morozov, SV ;

Jiang, D ;

Zhang, Y ;

Dubonos, SV ;

Grigorieva, IV ;

Firsov, AA .

SCIENCE, 2004, 306 (5696) :666-669

[10] Preparation of MnO2/graphene composite as electrode material for supercapacitors [J].

Qian, Yong ;

Lu, Shunbao ;

Gao, Fenglei .

JOURNAL OF MATERIALS SCIENCE, 2011, 46 (10) :3517-3522

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