Superior rate capabilities of SnS nanosheet electrodes for Li ion batteries

https://doi.org/10.1016/j.elecom.2009.12.025Get rights and content
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Abstract

We report on the self-supported, two-dimensional (2D) SnS nanosheets electrode directly grown on metallic current collectors via non-catalytic and template-free, vapor transport synthetic route. The self-supported SnS nanosheets electrode demonstrates good cycling performance and superior rate capabilities: a capacity of ∼380 mAh g−1 even at 20C rate (after charging for 3 min), larger than the theoretical capacity of the carbon-based electrodes currently used in commercial Li ion batteries. The origin of such an improvement in the long-term cycle stability and electronic/ionic transport kinetics, is understood by means of various microscopic investigation as well as unique characteristics of self-supported nanostructuring strategy itself.

Keywords

Li ion batteries
Pulsed laser deposition
SnS nanosheets
Self-supported nanostructuring
Rate capabilities

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