Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix

doi:10.1021/jp109597n

	Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix
	Chen, Yan-Li; Hu, Zhong-Ai; Chang, Yan-Qin; Wang, Huan-Wen; Zhang, Zi-Yu; Yang, Yu-Ying; Wu, Hong-Ying
	2011-02-10
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	115 期号:5 页码:2563-2571
摘要	ZnO/reduced graphite oxide composites were synthesized using a two-step method in which KOH reacts with Zn(NO3)2 in the aqueous dispersions of graphite oxide (GO) to form a Zn(OH)2/graphite oxide precursor, followed by thermal treatment in air. It was found that the dispersion of reduced graphene oxide (rGO) sheets within composites was key for achieving an excellent capacitive performance of the samples. However, the mass ratio of ZnO to rGO determined whether rGO sheets within composites were dispersed or agglomerated. The composite achieved homogeneous incorporation of rGO sheets within the ZnO matrix when the mass ratio of ZnO to rGO was equal to 93.3:6.7. This composite, in which the weight percent of rGO was only 6.7%, appeared in the SEM images to be almost entirely filled with rGO sheets coated by ZnO and exhibited high specific capacitance and excellent cycling ability. Furthermore, the sheets overlapped to form a three-dimensional network structure, through which electrolyte ions easily access the surface of the rGO or electrochemical active sites. The homogeneously incorporated rGO sheets were shown to provide 128% enhancement in specific capacitance compared with 135 F g-1 for pure zinc oxide samples. Also, the unexpected phenomena involved in the experimental processes are discussed in detail. © 2011 American Chemical Society.
关键词	Aqueous dispersions Capacitive performance Electrochemical capacitance High specific capacitances Reduced graphene oxides Reduced graphene oxides (RGO) Specific capacitance Three dimensional network structure
DOI	10.1021/jp109597n
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000286868600150
出版者	American Chemical Society
EI入藏号	20111213760033
EI主题词	Capacitance - Dispersions - Electrolytes - Graphene oxide - Graphite - II-VI semiconductors - Potassium hydroxide
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 702 Electric Batteries and Fuel Cells ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 951 Materials Science
原始文献类型	Journal article (JA)
引用统计	被引频次：353[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.nwnu.edu.cn/handle/39RV6HYL/29995
专题	实体学院_化学化工学院实体学院_化学化工学院_化工系
通讯作者	Hu, Zhong-Ai
作者单位	NW Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Coll Chem & Chem Engn, Key Lab Polymer Mat Gansu Prov,Minist Educ, Lanzhou 730070, Peoples R China
第一作者单位	化工系
通讯作者单位	化工系
第一作者的第一单位	化工系
推荐引用方式 GB/T 7714	Chen, Yan-Li,Hu, Zhong-Ai,Chang, Yan-Qin,et al. Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix[J]. Journal of Physical Chemistry C,2011,115(5):2563-2571.
APA	Chen, Yan-Li.,Hu, Zhong-Ai.,Chang, Yan-Qin.,Wang, Huan-Wen.,Zhang, Zi-Yu.,...&Wu, Hong-Ying.(2011).Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix.Journal of Physical Chemistry C,115(5),2563-2571.
MLA	Chen, Yan-Li,et al."Zinc oxide/reduced graphene oxide composites and electrochemical capacitance enhanced by homogeneous incorporation of reduced graphene oxide sheets in zinc oxide matrix".Journal of Physical Chemistry C 115.5(2011):2563-2571.

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