Self-supported Li4Ti5O12 nanosheet arrays for lithium ion batteries with   excellent rate capability and ultralong cycle life

doi:10.1039/c3ee42646g

CORC > 北京大学 > 化学与分子工程学院

	Self-supported Li4Ti5O12 nanosheet arrays for lithium ion batteries with excellent rate capability and ultralong cycle life
	Chen, Shuai ; Xin, Yuelong ; Zhou, Yiyang ; Ma, Yurong ; Zhou, Henghui ; Qi, Limin
刊名	energy environmental science
	2014
关键词	NEGATIVE-ELECTRODE MATERIALS ANODE MATERIALS ULTRAFAST-CHARGE ANATASE TIO2 STORAGE TITANATE PERFORMANCE CHALLENGES INSERTION KINETICS
DOI	10.1039/c3ee42646g
英文摘要	Facile fabrication of well-aligned Li4Ti5O12 (LTO) nanosheet arrays grown directly on conductive Ti foil was achieved by hydrothermal growth in LiOH solution. The reaction between Ti foil and LiOH led to the growth of vertically aligned, rectangular lithium titanate oxide hydrate (H-LTO) nanosheet arrays, which could be converted into LTO nanosheet arrays through topotactic transformation via thermal decomposition. An appropriate LiOH concentration was essential for the formation of densely aligned H-LTO nanosheet arrays on the substrate. It was proposed that the formation of the H-LTO nanosheet arrays was through kinetics-controlled growth during the hydrothermal metal corrosion process. When used as a binder-free anode for LIBs, the self-supported LTO nanosheet arrays standing on Ti foil exhibited an excellent rate capability (a reversible capacity of 163 mA h g (1) and 78 mA h g (1) at 20 C and 200 C, respectively) and an outstanding cycling performance (a capacity retention of 124 mA h g (1) after 3000 cycles at 50 C). Furthermore, a flexible lithium ion battery, which could be fully recharged within 30 s and was able to light an LED, was assembled by using the LTO nanosheet arrays as the anode.; Chemistry, Multidisciplinary; Energy & Fuels; Engineering, Chemical; Environmental Sciences; SCI(E); 20; ARTICLE; hhzhou@pku.edu.cn; liminqi@pku.edu.cn; 6; 1924-1930; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/212432]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Chen, Shuai,Xin, Yuelong,Zhou, Yiyang,et al. Self-supported Li4Ti5O12 nanosheet arrays for lithium ion batteries with excellent rate capability and ultralong cycle life[J]. energy environmental science,2014.
APA	Chen, Shuai,Xin, Yuelong,Zhou, Yiyang,Ma, Yurong,Zhou, Henghui,&Qi, Limin.(2014).Self-supported Li4Ti5O12 nanosheet arrays for lithium ion batteries with excellent rate capability and ultralong cycle life.energy environmental science.
MLA	Chen, Shuai,et al."Self-supported Li4Ti5O12 nanosheet arrays for lithium ion batteries with excellent rate capability and ultralong cycle life".energy environmental science (2014).