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Electrospun Conformal Li 4 Ti 5 O 12 /C Fibers for High‐Rate Lithium‐Ion Batteries
Author(s) -
Xu Henghui,
Hu Xianluo,
Luo Wei,
Sun Yongming,
Yang Ze,
Hu Chenchen,
Huang Yunhui
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201300108
Subject(s) - materials science , anode , lithium (medication) , electrochemistry , coating , electrospinning , chemical engineering , carbon fibers , composite number , conformal coating , layer (electronics) , nanotechnology , composite material , electrode , polymer , chemistry , medicine , engineering , endocrinology
Conformal carbon‐coated Li 4 Ti 5 O 12 (LTO) fibers are easily synthesized through a simple electrospinning route combined with subsequent thermal treatment. The as‐formed fibers comprise interconnected LTO nanoparticles and an external coating layer of carbon. When evaluated as an anode material for lithium‐ion batteries, the resulting LTO/C fibers exhibit excellent high‐rate lithium‐storage performances. The influence of the carbon content in the composite LTO/C fibers on the electrochemical properties is explored in detail. The enhanced lithium‐storage performances are attributed to the synergetic features of interconnected LTO nanocrystals and a highly electronically conductive coating layer of carbon, which reduce the Li + ‐diffusion distance and improve the electronic conductivity. This work presents a facile and effective synthetic strategy, which is potentially competitive for scaling‐up the industrial production of high‐rate LTO anode materials for lithium‐ion batteries.