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Carbon-coated silicon nanowire array films for high-performance lithium-ion battery anodes
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10.1063/1.3238572
/content/aip/journal/apl/95/13/10.1063/1.3238572
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/13/10.1063/1.3238572
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Figures

Image of FIG. 1.
FIG. 1.

Typical (a) top-view and (b) cross-section SEM images of the SiNW film. Typical (c) top-view and (d) cross-section SEM images of the carbon-coated SiNW film. (e) and (f) are the EDS spectra corresponding to (c) and (d), respectively. The insets in (b) and (d) are the low magnification images of (b) and (d), respectively.

Image of FIG. 2.
FIG. 2.

TEM images. (a) and (b) Bright-field images and (c) HRTEM image of the SiNWs; (d) and (e) Bright-field images and (f) HRTEM image of the carbon-coated SiNWs. The corresponding SAED patterns are shown in the insert of the figures.

Image of FIG. 3.
FIG. 3.

(a) Cyclic voltammogram for the carbon-coated SiNW film from 2.0 to 0.02 V at scan rate. (b) Voltage profiles of the carbon-coated SiNW film electrode after one, two, five, ten, 15, 26, 30, and 40 cycles at a rate of between 2 and 0.02 V. (c) Plot of capacity and Coulombic efficiency of the cell vs cycle number for the carbon-coated SiNW film electrode. (d) Plot of capacity and Coulombic efficiency of the cell vs cycle number for the uncoated SiNW film electrode, which is shown as a comparison to display the improvement when using the carbon-coated SiNW film.

Image of FIG. 4.
FIG. 4.

TEM images of the carbon-coated SiNW electrode after 40 cycles (the cell was charged to 2 V). (a) Bright-field image, (b) SAED pattern of (a), and (c) HRTEM image of (a).

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/content/aip/journal/apl/95/13/10.1063/1.3238572
2009-10-01
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Carbon-coated silicon nanowire array films for high-performance lithium-ion battery anodes
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/13/10.1063/1.3238572
10.1063/1.3238572
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