One-pot synthesis of MnO2/graphene/carbon nanotube hybrid by chemical method

被引：136

作者：

Chen, Ying ^{[1
,2
]}

Zhang, Yong ^{[1
]}

Geng, Dognsheng ^{[1
]}

Li, Ruying ^{[1
]}

Hong, Hanlie ^{[2
]}

Chen, Jingzhong ^{[2
]}

Sun, Xueliang ^{[1
]}

机构：

[1] Univ Western Ontario, Fac Engn, Dept Mech & Mat Engn, London, ON N6A 3K7, Canada

[2] China Univ Geosci, Minist Educ, Engn Res Ctr Nanogeomat, Wuhan 430074, Peoples R China

来源：

CARBON | 2011年 / 49卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

ELECTROCHEMICAL PROPERTIES; CARBON NANOTUBES; ENERGY-STORAGE; MNO2; ELECTRODES; ARRAYS;

D O I：

10.1016/j.carbon.2011.06.046

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：

A branched hybrid of MnO2/graphene/carbon nanotube (CNT) is generated in a one-pot reaction process by chemical method. Some ultrathin MnO2/graphene nanosheets, around 5 nm in thickness, are randomly distributed on the CNT surface. Morphology, phase structure, microstructure and vibrational properties of the hybrid were characterized by field emission scanning electron microscope, X-ray diffractometer, high resolution transmission electron microscope and Raman spectrometer. Elemental distribution of the hybrid was determined by energy dispersive X-ray mapping performed in scanning transmission electron microscope mode. The key factor of the formation mechanism is associated with both redox and oxidation-intercalation reactions. Graphene flakes are partly exfoliated from the surface layers of the CNTs, and the redox reaction between KMnO4 and hydroxyl groups occurs on both sides of these flakes, resulting in the formation of a MnO2/graphene/CNT hybrid. Brunauer-Emmett-Teller surface area measurements indicate that the hybrid has over four times the specific surface area of the pristine CNTs. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4434 / 4442

页数：9

共 27 条

[1] STRUCTURAL AND ELECTROCHEMICAL PROPERTIES OF THE PROTON GAMMA-MNO2 SYSTEM [J].

CHABRE, Y ;

PANNETIER, J .

PROGRESS IN SOLID STATE CHEMISTRY, 1995, 23 (01) :1-130

[2] SUPERCRITICAL WATER OXIDATION OF ACETIC-ACID BY POTASSIUM-PERMANGANATE [J].

CHANG, KC ;

LI, LX ;

GLOYNA, EF .

JOURNAL OF HAZARDOUS MATERIALS, 1993, 33 (01) :51-62

[3] Enhanced capacitance of manganese oxide via confinement inside carbon nanotubes [J].

Chen, Wei ;

Fan, Zhongli ;

Gu, Lin ;

Bao, Xinhe ;

Wang, Chunlei .

CHEMICAL COMMUNICATIONS, 2010, 46 (22) :3905-3907

[4] Spontaneous reduction of metal ions on the sidewalls of carbon nanotubes [J].

Choi, HC ;

Shim, M ;

Bangsaruntip, S ;

Dai, HJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (31) :9058-9059

[5] Incorporation of homogeneous, nanoscale MnO2 within ultraporous carbon structures via self-limiting electroless deposition:: Implications for electrochemical capacitors [J].

Fischer, Anne E. ;

Pettigrew, Katherine A. ;

Rolison, Debra R. ;

Stroud, Rhonda M. ;

Long, Jeffrey W. .

NANO LETTERS, 2007, 7 (02) :281-286

[6] Lower-Defect Graphene Oxide Nanoribbons from Multiwalled Carbon Nanotubes [J].

Higginbotham, Amanda L. ;

Kosynkin, Dmitry V. ;

Sinitskii, Alexander ;

Sun, Zhengzong ;

Tour, James M. .

ACS NANO, 2010, 4 (04) :2059-2069

[7] Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes [J].

Hou, Ye ;

Cheng, Yingwen ;

Hobson, Tyler ;

Liu, Jie .

NANO LETTERS, 2010, 10 (07) :2727-2733

[8] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[9] Raman spectra of birnessite manganese dioxides [J].

Julien, C ;

Massot, M ;

Baddour-Hadjean, R ;

Franger, S ;

Bach, S ;

Pereira-Ramos, JP .

SOLID STATE IONICS, 2003, 159 (3-4) :345-356

[10] Spectroscopic studies of the local structure in positive electrodes for lithium batteries [J].

Julien, C ;

Massot, M .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2002, 4 (17) :4226-4235

← 1 2 3 →