Preparation of Poly(sodium-4-styrene sulfonate) Functionalized Graphene/Manganese Dioxide Composites for Supercapacitor Application with Superior Cycling Stability

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	Preparation of Poly(sodium-4-styrene sulfonate) Functionalized Graphene/Manganese Dioxide Composites for Supercapacitor Application with Superior Cycling Stability
	Li ZP(李章朋)1; Wang JQ(王金清)1 ; Wang ZF(王赵峰)1 ; Niu LY(牛棱渊)1,2; Sun JF(孙金凤)1,2 ; Yang SR(杨生荣)1
刊名	Journal of the Chinese Chemical Society
	2012
卷号	59 期号:10 页码:1351-1356
关键词	Graphene Manganese dioxide Composite Supercapacitor
ISSN号	0009-4536
通讯作者	王金清 ; 杨生荣
英文摘要	A series of poly(sodium-4-styrene sulfonate) functionalized graphene/manganese dioxide (PSS-GS/MnO₂) composites as electrode materials for supercapacitors are prepared via a simple and facile route. The morphology and microstructure of the as-prepared samples are characterized by field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, Raman microscope and X-ray photoelectron spectroscopy. The electrochemical performances of the as-prepared composites are evaluated by cyclic voltammetry, galvanostatic charge/discharge experiments and electrochemical impedance spectroscopy in 1 M Na₂SO₄ electrolyte, demonstrating that the resulting composite materials exhibit excellent gravimetric capacitance and long cycle life. Moreover, the relationship of the specific surface areas and electrochemical performance is investigated and discussed. The results demonstrate that the specific capacitance increases with the increase of the specific surface area and the specific capacitance of PSS-GS/MnO₂-2 with the highest specific surface area can reach 223 F g⁻¹ at the current density of 0.1 A g⁻¹. The enhanced specific capacitance can be attributed to the higher specific surface area and uniform pore size distribution, which enable effective electrolyte transport and active site accessibility.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grant Nos. 51075384);“Top Hundred Talents Program” of Chinese Academy of Sciences
语种	英语
WOS记录号	WOS:000309945300029
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3778]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Li ZP,Wang JQ,Wang ZF,et al. Preparation of Poly(sodium-4-styrene sulfonate) Functionalized Graphene/Manganese Dioxide Composites for Supercapacitor Application with Superior Cycling Stability[J]. Journal of the Chinese Chemical Society,2012,59(10):1351-1356.
APA	Li ZP,Wang JQ,Wang ZF,Niu LY,Sun JF,&Yang SR.(2012).Preparation of Poly(sodium-4-styrene sulfonate) Functionalized Graphene/Manganese Dioxide Composites for Supercapacitor Application with Superior Cycling Stability.Journal of the Chinese Chemical Society,59(10),1351-1356.
MLA	Li ZP,et al."Preparation of Poly(sodium-4-styrene sulfonate) Functionalized Graphene/Manganese Dioxide Composites for Supercapacitor Application with Superior Cycling Stability".Journal of the Chinese Chemical Society 59.10(2012):1351-1356.