Novel and high-performance asymmetric micro-supercapacitors based on graphene quantum dots and polyaniline nanofibers

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 清洁能源化学与材料实验室

	Novel and high-performance asymmetric micro-supercapacitors based on graphene quantum dots and polyaniline nanofibers
	Liu WW(刘文文)1,2,3; Yan XB(阎兴斌)1,2 ; Chen JT(陈江涛)1 ; Feng YQ(冯亚强)1; Xue QJ(薛群基)2 ; Yan XB(阎兴斌); Yan XB(阎兴斌); Yan XB(阎兴斌)
刊名	Nanoscale
	2013
卷号	5 期号:13 页码:6053-6062
ISSN号	2040-3364
通讯作者	阎兴斌
英文摘要	In comparison with graphene sheets, graphene quantum dots (GQDs) exhibit novel chemical/physical properties including nanometer-size, abundant edge defects, good electrical conductivity, high mobility, chemical inertia, stable photoluminescence and better surface grafting, making them promising for fabricating various novel devices. In the present work, an asymmetric micro-supercapacitor, using GQDs as negative active material and polyaniline (PANI) nanofibers as positive active material, is built for the first time by a simple and controllable two-step electro-deposition on interdigital finger gold electrodes. Electrochemical measurements reveal that the as-made GQDs//PANI asymmetric micro-supercapacitor has a more excellent rate capability (up to 1000 V s^_1) than previously reported electrode materials, as well as faster power response capability (with a very short relaxation time constant of 115.9 μs) and better cycling stability after 1500 cycles in aqueous electrolyte. On this basis, an all-solid-state GQDs// PANI asymmetric micro-supercapacitor is fabricated using H₃PO₄–polyvinyl alcohol gel as electrolyte, which also exhibits desirable electrochemical capacitive performances. These encouraging results presented here may open up new insight into GQDs with highly promising applications in highperformance energy-storage devices, and further expand the potential applications of GQDs beyond the energy-oriented application of GQDs discussed above.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the Top Hundred Talents Program of the Chinese Academy of Sciences;the National Nature Science Foundations of China (51005225);the Youth Science Foundations of Gansu Province (1107RJYA274)
语种	英语
WOS记录号	WOS:000320398300050
公开日期	2013-12-13
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/4698]
专题	兰州化学物理研究所_清洁能源化学与材料实验室兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Yan XB(阎兴斌); Yan XB(阎兴斌); Yan XB(阎兴斌)
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Liu WW,Yan XB,Chen JT,et al. Novel and high-performance asymmetric micro-supercapacitors based on graphene quantum dots and polyaniline nanofibers[J]. Nanoscale,2013,5(13):6053-6062.
APA	Liu WW.,Yan XB.,Chen JT.,Feng YQ.,Xue QJ.,...&阎兴斌.(2013).Novel and high-performance asymmetric micro-supercapacitors based on graphene quantum dots and polyaniline nanofibers.Nanoscale,5(13),6053-6062.
MLA	Liu WW,et al."Novel and high-performance asymmetric micro-supercapacitors based on graphene quantum dots and polyaniline nanofibers".Nanoscale 5.13(2013):6053-6062.