Three-dimensional flower-like nickel oxide supported on graphene sheets as electrode material for supercapacitors

被引：67

作者：

Ge, Chongyong ^{[1
]}

Hou, Zhaohui ^{[1
]}

He, Binhong ^{[1
]}

Zeng, Fanyan ^{[2
]}

Cao, Jianguo ^{[2
]}

Liu, Yiming ^{[1
]}

Kuang, Yafei ^{[2
]}

机构：

[1] Hunan Inst Sci & Technol, Coll Chem & Chem Engn, Yueyang 414006, Peoples R China

[2] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2012年 / 63卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Graphene sheets; NiO; Supercapacitor; Hydrothermal; NIO NANOFLOWERS; SURFACTANT; NANOSTRUCTURES; ORGANIZATION; PERFORMANCE; FABRICATION; ROUTE;

D O I：

10.1007/s10971-012-2778-7

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：

Dispersed three-dimensional (3D) flower-like nickel oxide on graphene sheets was synthesized by incorporating a facile hydrothermal process with a thermal treatment process. The possible growth mechanism of 3D flower-like NiO is discussed. When used as electrode materials for supercapacitors, the resultant composite exhibits a specific capacitance of 346F/g (1.5A/g), a good rate performance and cycle stability in 2 M KOH. NiO in the composite could provide a specific capacitance as high as 778.7F/g, compared to that of bare NiO of only 220F/g. The functional features of unique 3D flower-like NiO morphology, high conductivity of graphene sheets and its protective effect to the structure of NiO result in an improved electrochemical performance.

引用

页码：146 / 152

页数：7

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