Porous V2O5-SnO2/CNTs composites as high performance cathode materials for lithium-ion batteries

IMR OpenIR

	Porous V2O5-SnO2/CNTs composites as high performance cathode materials for lithium-ion batteries
	Q. Guo; Z. H. Sun; M. Gao; Z. Tan; B. S. Zhang; D. S. Su
	2013
发表期刊	Journal of Energy Chemistry
ISSN	2095-4956
卷号	22 期号:2 页码:347-355
摘要	Vanadium pentoxide (V2O5) exhibits high theoretical capacities when used as a cathode in lithium ion batteries (LIBs), but its application is limited by its structural instability as well as its low lithium and electronic conductivities. A porous composite of V2O5-SnO2/carbon nanotubes (CNTs) was prepared by a hydrothermal method and followed by thermal treatment. The small particles of V2O5, their porous structure and the coexistence of SnO2 and CNTs can all facilitate the diffusion rates of the electrons and lithium ions. Electrochemical impedance spectra indicated higher ionic and electric conductivities, as compared to commercial V2O5. The V2O5-SnO2/CNTs composite gave a reversible discharge capacity of 198 mAh.g(-1) at the voltage range of 2.05-4.0 V, measured at a current rate of 200 mA.g(-1), while that of the commercial V2O5 was only 88 mAh.g(-1), demonstrating that the porous V2O5-SnO2/CNTs composite is a promising candidate for high-performance lithium secondary batteries.
部门归属	[guo, qi ; sun, zhenhua ; gao, man ; tan, zhi ; zhang, bingsen ; su, dang sheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china. ; sun, zh (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china. ; zhsun@imr.ac.cn ; dangsheng@fhi-berlin.mpg.de
关键词	Lithium-ion Battery Cathode Vanadium Oxide Carbon Nanotube Electrochemical Energy Storage Electrochemical Energy-storage Vanadium Pentoxide Carbon Nanotubes Hydrothermal Synthesis Li-insertion Electrodes Oxide V2o5 Nanocomposites Temperature
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71232
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Guo,Z. H. Sun,M. Gao,et al. Porous V2O5-SnO2/CNTs composites as high performance cathode materials for lithium-ion batteries[J]. Journal of Energy Chemistry,2013,22(2):347-355.
APA	Q. Guo,Z. H. Sun,M. Gao,Z. Tan,B. S. Zhang,&D. S. Su.(2013).Porous V2O5-SnO2/CNTs composites as high performance cathode materials for lithium-ion batteries.Journal of Energy Chemistry,22(2),347-355.
MLA	Q. Guo,et al."Porous V2O5-SnO2/CNTs composites as high performance cathode materials for lithium-ion batteries".Journal of Energy Chemistry 22.2(2013):347-355.