Issue 24, 2013

Facile synthesis of N-doped carbon-coated Li4Ti5O12 microspheres using polydopamine as a carbon source for high rate lithium ion batteries

Abstract

Nitrogen-doped (N-doped) carbon-coated Li4Ti5O12 microspheres are synthesized by a solution method combined with heat treatment, in which polydopamine-coated TiO2 is first prepared and subsequently transformed in situ into N-doped carbon-coated Li4Ti5O12 microspheres. Importantly, neither templates nor rigorous reaction conditions are needed in this process that makes it simple, effective and general. The thickness of the resulting N-doped carbon coating layer can be tailored by controlling the coating time of dopamine. The optimum designed N-doped carbon-coated Li4Ti5O12 microspheres with a continuous and high electronically conducting network demonstrated superior rate performance (123 mA h g−1 at 30 C) and excellent capacity retention (136.5 mA h g−1 after 200 cycles at 10 C) when used as anode material, indicating their promising application in high-rate lithium ion batteries.

Graphical abstract: Facile synthesis of N-doped carbon-coated Li4Ti5O12 microspheres using polydopamine as a carbon source for high rate lithium ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
08 Feb 2013
Accepted
03 Apr 2013
First published
04 Apr 2013

J. Mater. Chem. A, 2013,1, 7270-7276

Facile synthesis of N-doped carbon-coated Li4Ti5O12 microspheres using polydopamine as a carbon source for high rate lithium ion batteries

H. Li, L. Shen, K. Yin, J. Ji, J. Wang, X. Wang and X. Zhang, J. Mater. Chem. A, 2013, 1, 7270 DOI: 10.1039/C3TA10623C

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