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Electrospun Li4Ti5O12 nanofibers sheathed with conductive TiN/TiOxNy layer as an anode material for high power Li-ion batteries

Title
Electrospun Li4Ti5O12 nanofibers sheathed with conductive TiN/TiOxNy layer as an anode material for high power Li-ion batteries
Other Titles
TiOxNy layer as an anode material for high power Li-ion batteries
Author
백운규
Keywords
Lithium ion batteries; Anode; Lithium titanate; Electrospinning; Nitridation
Issue Date
2013-11
Publisher
ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Citation
In: Journal of Power Sources. (Journal of Power Sources, In Press, 2012)
Abstract
Spinel lithium titanate (Li4Ti5O12) has attracted great interest as an anode material for lithium ion batteries due to its safe operation, low cost, and zero-strain effect during Li insertion/extraction. However, the poor rate capability caused by low electronic conductivity limits its practical use. We synthesized surface functionalized one-dimensional (1D) Li4Ti5O12 nanofibers using simple electrospinning and subsequent nitridation process. Uniformly coated conducting TiN/TiOxNy layer on the surface of Li4Ti5O12 nanofiber enables fast electron transport along its one dimensional geometry, which leads to significant improvement in rate capability. Nitridated Li4Ti5O12 nanofibers electrode deliver 0000005E s about 1.35 times larger discharge capacity than that of pristine nan 0000163C ofibers electrode at a current density of 10 C. (C) 2012 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0378775312017533?via%3Dihubhttp://hdl.handle.net/20.500.11754/46192
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2012.11.078
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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