Topotactic conversion route to ultrafine crystalline TiO2 nanotubes with   optimizable electrochemical performance

doi:10.1039/c3ra22670k

CORC > 北京大学 > 化学与分子工程学院

	Topotactic conversion route to ultrafine crystalline TiO2 nanotubes with optimizable electrochemical performance
	Liu, Weilong ; Gao, Peng ; Bao, Di ; Zhang, Guoli ; Chen, Yujin ; Chen, Guorui ; Wang, Ying ; Wang, Longqiang ; Yang, Shaoqiang ; Li, Guobao ; Sun, Yuzeng
刊名	rsc advances
	2013
关键词	LITHIUM-ION BATTERIES EXPOSED 001 FACETS TITANIUM-DIOXIDE PHASE-TRANSITION ARRAYS ANATASE MICROSPHERES NANOSTRUCTURES ELECTRODES PHOTOLYSIS
DOI	10.1039/c3ra22670k
英文摘要	Anatase TiO2 nanotubes have been successfully synthesized via a topotactic chemical transformation from H2Ti3O7 nanotubes, in which the primary H2Ti3O7 nanotube frameworks can be preserved. The TiO2 nanotubes have an average outer diameter of around 8 nm and the inner diameter around 3-4 nm with 2 micrometers in length. Importantly, the nanotubes' shells are mainly formed by (113) planes perpendicular to the long axial of nanotubes, which is different from the structures found in the literature. The electrochemical properties are investigated by constant current discharge/charge measurements. There are potential plateaus at 1.75 and 1.93V in the process of Li insertion and extraction of the TiO2 nanotubes, and the initial Li insertion/extraction capacity is 590 and 298 mA h g(-1) at 30 mA g(-1), respectively. In the charge-discharge capacities of TiO2 nanotubes (calcination at 500 degrees C) at different current rates, the reversible capacity still remains at about 165 and 139 mA h g(-1) at current density of 480 and 960 mA g(-1), respectively with excellent coulombic efficiency of approximately 100%.; Chemistry, Multidisciplinary; SCI(E); EI; 2; ARTICLE; 18; 6531-6537; 3
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/290695]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Liu, Weilong,Gao, Peng,Bao, Di,et al. Topotactic conversion route to ultrafine crystalline TiO2 nanotubes with optimizable electrochemical performance[J]. rsc advances,2013.
APA	Liu, Weilong.,Gao, Peng.,Bao, Di.,Zhang, Guoli.,Chen, Yujin.,...&Sun, Yuzeng.(2013).Topotactic conversion route to ultrafine crystalline TiO2 nanotubes with optimizable electrochemical performance.rsc advances.
MLA	Liu, Weilong,et al."Topotactic conversion route to ultrafine crystalline TiO2 nanotubes with optimizable electrochemical performance".rsc advances (2013).