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

Content Provider	Royal Society of Chemistry (RSC)
Author	Chen, Shuai Zhou, Henghui Qi, Limin Xin, Yuelong Zhou, Yiyang Ma, Yurong
Copyright Year	2014
Abstract	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.
Starting Page	1924
Ending Page	1930
Page Count	7
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	7
Issue Number	6
Journal	Energy & Environmental Science
DOI	10.1039/c3ee42646g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	LTO LiOH Nanosheet Hydrothermal circulation Lithium Hydrate Corrosion Anode Ion
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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