Journal
CHEMELECTROCHEM
Volume 1, Issue 3, Pages 611-616Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201300108
Keywords
anode; electrospinning; high rate; Li4Ti5O12; lithium-ion battery
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Funding
- Natural Science Foundation of China [21271078, 51002057]
- PCSIRT (Program for Changjiang Scholars and Innovative Team in University)
- NCET (Program for New Century Excellent Talents in University) [NECT-12-0223]
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Conformal carbon-coated Li4Ti5O12 (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.
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