Issue 2, 2014

N-doped graphitic self-encapsulation for high performance silicon anodes in lithium-ion batteries

Abstract

N-doped sites at CNT and graphene trigger spontaneous encapsulation of Si particles by simple pH control at room temperature. Significantly, N-doped CNT encapsulated Si composite electrode materials show remarkable cycle life and rate performance in battery operations. Superior capacity retention of 79.4% is obtained after 200 cycles and excellent rate capability of 914 mA h gāˆ’1 is observed at a 10 C rate.

Graphical abstract: N-doped graphitic self-encapsulation for high performance silicon anodes in lithium-ion batteries

Supplementary files

Article information

Article type
Communication
Submitted
06 10 2013
Accepted
30 10 2013
First published
04 11 2013

Energy Environ. Sci., 2014,7, 621-626

N-doped graphitic self-encapsulation for high performance silicon anodes in lithium-ion batteries

W. J. Lee, T. H. Hwang, J. O. Hwang, H. W. Kim, J. Lim, H. Y. Jeong, J. Shim, T. H. Han, J. Y. Kim, J. W. Choi and S. O. Kim, Energy Environ. Sci., 2014, 7, 621 DOI: 10.1039/C3EE43322F

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