A nanocomposite of needle-like MnO2 nanowires arrays sandwiched between graphene nanosheets for supercapacitors

被引：43

作者：

Song, Hongfang ^{[1
]}

Li, Xinlu ^{[1
]}

Zhang, Yonglai ^{[1
]}

Wang, Hao ^{[1
]}

Li, Hongyi ^{[1
]}

Huang, Jiamu ^{[1
]}

机构：

[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400030, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期

关键词：

Graphene; Manganese dioxide; Supercapacitor; HIGH-PERFORMANCE SUPERCAPACITOR; ELECTROCHEMICAL CAPACITORS; OXIDE; ULTRACAPACITORS; ELECTRODES; SHEETS;

D O I：

10.1016/j.ceramint.2013.06.044

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A nanocomposite of needle-like MnO2 nanowires arrays-graphene (NMNAG) is synthesized by in-situ growth of MnO2 nanowires on the surface of graphene nanosheets (GNS), resulting in a sandwich nanoarchitecture hybrid. The preparation is a simple redox reaction between potassium permanganate (KMnO4) and GNS, which is facile to produce in large scale at low cost. The nanocomposite exhibits high-capacitance performance (276 F g(-1) at 0.5 A g(-1)), excellent rate capability (62.7% capacity retention at 60 A g(-1)), stable cycleability (no degradation after 1200 cycles) and a maximum power density of 21.6 kW kg(-1). (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1251 / 1255

页数：5

共 24 条

[1] Distortion of MnO6 octahedra and electrochemical activity of Nstutite-based MnO2 polymorphs for alkaline electrolytes -: an FTIR study [J].

Ananth, MV ;

Pethkar, S ;

Dakshinamurthi, K .

JOURNAL OF POWER SOURCES, 1998, 75 (02) :278-282

[2]

[Anonymous], 1999, ELECTROCHEMICAL SUPE

[3] Carbon-based nanostructured materials and their composites as supercapacitor electrodes [J].

Bose, Saswata ;

Kuila, Tapas ;

Mishra, Ananta Kumar ;

Rajasekar, R. ;

Kim, Nam Hoon ;

Lee, Joong Hee .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (03) :767-784

[4] High supercapacitive stability of spray pyrolyzed ZnO-added manganese oxide coatings [J].

Chen, Chin-Yi ;

Chang, Hung-Wei ;

Shih, Shao-Ju ;

Tsay, Chien-Yie ;

Chang, Chi-Jung ;

Lin, Chung-Kwei .

CERAMICS INTERNATIONAL, 2013, 39 (02) :1885-1892

[5] Graphene Oxide-MnO2 Nanocomposites for Supercapacitors [J].

Chen, Sheng ;

Zhu, Junwu ;

Wu, Xiaodong ;

Han, Qiaofeng ;

Wang, Xin .

ACS NANO, 2010, 4 (05) :2822-2830

[6] Graphene-MnO2 and graphene asymmetrical electrochemical capacitor with a high energy density in aqueous electrolyte [J].

Deng, Lingjuan ;

Zhu, Gang ;

Wang, Jianfang ;

Kang, Liping ;

Liu, Zong-Huai ;

Yang, Zupei ;

Wang, Zenglin .

JOURNAL OF POWER SOURCES, 2011, 196 (24) :10782-10787

[7] 3D Graphene-Cobalt Oxide Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection [J].

Dong, Xiao-Chen ;

Xu, Hang ;

Wang, Xue-Wan ;

Huang, Yin-Xi ;

Chan-Park, Mary B. ;

Zhang, Hua ;

Wang, Lian-Hui ;

Huang, Wei ;

Chen, Peng .

ACS NANO, 2012, 6 (04) :3206-3213

[8] Significant improvement in the electrochemical performances of nano-nest like amorphous MnO2 electrodes due to Fe doping [J].

Dubal, D. P. ;

Lokhande, C. D. .

CERAMICS INTERNATIONAL, 2013, 39 (01) :415-423

[9]

Fan Z., ADV MAT, V22

[10] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

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

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