Issue 18, 2014

An electrochemically grown three-dimensional porous Si@Ni inverse opal structure for high-performance Li ion battery anodes

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.

Graphical abstract: An electrochemically grown three-dimensional porous Si@Ni inverse opal structure for high-performance Li ion battery anodes

Supplementary files

Article information

Article type
Paper
Submitted
10 Jan 2014
Accepted
20 Feb 2014
First published
21 Feb 2014

J. Mater. Chem. A, 2014,2, 6396-6401

Author version available

An electrochemically grown three-dimensional porous Si@Ni inverse opal structure for high-performance Li ion battery anodes

D. Y. Kim, J. Suk, D. W. Kim, Y. Kang, S. H. Im, Y. Yang and O. O. Park, J. Mater. Chem. A, 2014, 2, 6396 DOI: 10.1039/C4TA00147H

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