Abstract
We report a facile method for the fabrication of a three-dimensional (3D) porous silicon@nickel (Si@Ni) inverse opal structure for Li ion batteries by using an electrodeposition method and a colloidal crystal as a sacrificial template. The Ni inverse opal structure was fabricated first by electrodeposition of Ni on the pre-formed colloidal crystal template, followed by removal of the template. Finally, the Si@Ni inverse opal structure was obtained by electrodeposition of Si onto the Ni inverse opal structure. The highly porous structure of the electrode containing a conductive and mechanically strong Ni scaffold could sufficiently accommodate volume expansion during the Si-Li alloying. A coin cell using the Si@Ni inverse opal structure as an anode exhibited a high charge capacity of 2548.5 mA h g-1, stable cycling retention, and high rate performance without the need for binders or conducting additives. This journal is
Original language | English |
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Pages (from-to) | 6396-6401 |
Number of pages | 6 |
Journal | Journal of Materials Chemistry A |
Volume | 2 |
Issue number | 18 |
DOIs | |
Publication status | Published - 2014 May 14 |
Externally published | Yes |
ASJC Scopus subject areas
- General Chemistry
- Renewable Energy, Sustainability and the Environment
- General Materials Science