Facile and green synthesis of Co3O4 nanoplates/graphene nanosheets composite for supercapacitor

被引：89

作者：

Wang, Xiwen ^{[1
]}

Liu, Suqin ^{[1
]}

Wang, Haiyan ^{[1
]}

Tu, Feiyue ^{[1
]}

Fang, Dong ^{[1
,2
]}

Li, Yanhua ^{[1
,3
]}

机构：

[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China

[2] Wuhan Text Univ, Minist Educ, Key Lab Green Proc & Funct Text New Text Mat, Wuhan 430073, Peoples R China

[3] Changsha Aeronaut Vocat & Tech Coll, Dept Chem Engn & Informat Engn, Changsha 410124, Hunan, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Graphene nanosheets; Cobalt oxide nanoplates; Hydrothermal method; Composite; Supercapacitor; ELECTROCHEMICAL CHARACTERIZATION; REVERSIBLE CAPACITY; GRAPHENE; CARBON; OXIDE; FABRICATION; DESIGN; ANODE; NANOCOMPOSITES; ELECTRODE;

D O I：

10.1007/s10008-012-1744-1

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of Co3O4 nanoplates/graphene nanosheets (GNS) composites are fabricated using a facile and green method by hydrothermal treatment and subsequent calcinations in air. The Co3O4 nanoplates with a length of 0.5-1 mu m and width of 100-300 nm are homogeneously distributed on the surface of graphene nanosheets which are reduced under mild hydrothermal treatment as investigated by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Electrochemical properties are tested by cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The Co3O4 nanoplates/7.0 % GNS composite shows a maximum specific capacitance of 667.9 F g(-1) at 1.25 A g(-1) and 412.5 F g(-1) at 5 A g(-1) in 2 M KOH aqueous solution. The composite exhibits excellent cycling stability with 18.7 % of specific capacitance increased after 1,000 cycles.

引用

页码：3593 / 3602

页数：10

共 52 条

[1]

[Anonymous], 1999, ELECTROCHEMICAL SUPE

[2] One-Step Synthesis of Graphene-Cobalt Hydroxide Nanocomposites and Their Electrochemical Properties [J].

Chen, Sheng ;

Zhu, Junwu ;

Wang, Xin .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (27) :11829-11834

[3] Zinc Oxide/Reduced Graphene Oxide Composites and Electrochemical Capacitance Enhanced by Homogeneous Incorporation of Reduced Graphene Oxide Sheets in Zinc Oxide Matrix [J].

Chen, Yan-Li ;

Hu, Zhong-Ai ;

Chang, Yan-Qin ;

Wang, Huan-Wen ;

Zhang, Zi-Yu ;

Yang, Yu-Ying ;

Wu, Hong-Ying .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (05) :2563-2571

[4] Design and Synthesis of Hierarchical Nanowire Composites for Electrochemical Energy Storage [J].

Chen, Zheng ;

Qin, Yaochun ;

Weng, Ding ;

Xiao, Qiangfeng ;

Peng, Yiting ;

Wang, Xiaolei ;

Li, Hexing ;

Wei, Fei ;

Lu, Yunfeng .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (21) :3420-3426

[5] Interactions in fluorescent-magnetic heterodimer nanocomposites [J].

Deng, Shuang ;

Ruan, Gang ;

Han, Ning ;

Winter, Jessica O. .

NANOTECHNOLOGY, 2010, 21 (14)

[6] Carbon-poly(3-methylthiophene) hybrid supercapacitors [J].

Di Fabio, A ;

Giorgi, A ;

Mastragostino, M ;

Soavi, F .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (08) :A845-A850

[7]

Dong Z, 2007, J PHYS CHEM C, V111, P18475, DOI [10.1021/jp075365l, 10.1021/jp0753651]

[8]

Gao W, 2009, NAT CHEM, V1, P403, DOI [10.1038/NCHEM.281, 10.1038/nchem.281]

[9] Graphene Nanosheet/Ni2+/Al3+ Layered Double-Hydroxide Composite as a Novel Electrode for a Supercapacitor [J].

Gao, Zan ;

Wang, Jun ;

Li, Zhanshuang ;

Yang, Wanlu ;

Wang, Bin ;

Hou, Mengjie ;

He, Yang ;

Liu, Qi ;

Mann, Tom ;

Yang, Piaoping ;

Zhang, Milin ;

Liu, Lianhe .

CHEMISTRY OF MATERIALS, 2011, 23 (15) :3509-3516

[10] Co3O4 nanoboxes:: Surfactant-templated fabrication and microstructure characterization [J].

He, T ;

Chen, DR ;

Jiao, XL ;

Wang, YL .

ADVANCED MATERIALS, 2006, 18 (08) :1078-+

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