Hollowed-out tubular carbon@MnO2 hybrid composites with controlled morphology derived from kapok fibers for supercapacitor electrode materials

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 环境材料与生态化学研究发展中心

	Hollowed-out tubular carbon@MnO2 hybrid composites with controlled morphology derived from kapok fibers for supercapacitor electrode materials
	Mu B(牟斌)1 ; Zhang WB(张文博)1,2 ; Xu WB(许卫兵)1,2; Wang AQ(王爱勤)1
刊名	Electrochimica Acta
	2015
卷号	178 页码:709-720
关键词	kapok fiber hollowed-out tubular hybrid composites supercapacitors
ISSN号	0013-4686
通讯作者	王爱勤
英文摘要	The hollowed-out tubular carbon@MnO₂ hybrid composites with hierarchical morphology have been successfully prepared via the redox reaction between MnO₄^- and tubular carbonized kapok fiber. The morphology and electrochemical performance of the as-prepared hybrid composites can be facilely controlled by adjusting the concentration of MnO₄^- . The carbon@MnO₂ electrode with tubular structure of the assembled MnO₂ nanosheets possess the highest specific capacitance of 321 Fg^-1 at a current density of 0.5 Ag^-1 with the capacitance retention of 94% at a scan rate of 100 mV s^-1 for 800 cycles in 1.0M Na₂SO₄ solution. The studies on the temperature dependence indicated that the specific capacitance increased with the increase in the testing temperature. The results reveal that the introduction of the highly conductive carbon in hybrid structure is one of the effective methods to improve the electrochemical performance of MnO₂ electrodes whose poor conductivity limit their capacitance, cycling life and rate performance. It also can be concluded that it is crucial to design and control the morphology of materials in practical application for supercapacitor.
学科主题	环境材料与生态化学
收录类别	SCI
资助信息	the National Science Foundation of China (No. 51303190)
语种	英语
WOS记录号	WOS:000361560300086
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18617]
专题	兰州化学物理研究所_环境材料与生态化学研究发展中心
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Mu B,Zhang WB,Xu WB,et al. Hollowed-out tubular carbon@MnO2 hybrid composites with controlled morphology derived from kapok fibers for supercapacitor electrode materials[J]. Electrochimica Acta,2015,178:709-720.
APA	Mu B,Zhang WB,Xu WB,&Wang AQ.(2015).Hollowed-out tubular carbon@MnO2 hybrid composites with controlled morphology derived from kapok fibers for supercapacitor electrode materials.Electrochimica Acta,178,709-720.
MLA	Mu B,et al."Hollowed-out tubular carbon@MnO2 hybrid composites with controlled morphology derived from kapok fibers for supercapacitor electrode materials".Electrochimica Acta 178(2015):709-720.