NDLI: Porous CNT@Li4Ti5O12 coaxial nanocables as ultra high power and long life anode materials for lithium ion batteries

Content Provider	Royal Society of Chemistry (RSC)
Author	Jia, Dianzeng Tang, Yakun Liu, Wei Zhao, Hongyang Liu, Lang
Copyright Year	2016
Abstract	Porous CNT@Li4Ti5O12 core–sheath coaxial nanocables were designed using a sol–gel method combined with a following low temperature reflux process and a short post-annealing in the presence of bamboo-like polymer nanotubes acting as a template and a carbon source. As anodes for lithium ion batteries, coaxial nanocables exhibit a high reversible capacity of 322.5 mA h g−1 at 200 mA g−1 after 200 cycles. They also have excellent rate capability and superior long-term cycling stability at high current density, which could attain a high discharge capacity of 198.7 mA h g−1 at 2000 mA g−1 for up to 2000 cycles. Compared with the Li4Ti5O12 nanoparticles, the enhanced electrochemical performance of the CNT@Li4Ti5O12 nanocomposites benefits from the shortened Li+ diffusion distance, large contact surface area, high conductivity, and good structure stability of the coaxial nanocables, which simultaneously solves the major problems on the loss of electrical contact and the aggregation of particles for Li4Ti5O12 anodes. The material with a nanocable structure is a potential candidate for developing advanced electrochemical energy storage systems with high power and long life.
Starting Page	2089
Ending Page	2095
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	6
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta07964k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Li Polymer Carbon Ion Current density Electrochemistry Diffusion
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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