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

Do Youb Kim, Jungdon Suk, Dong Wook Kim, Yongku Kang, Sang Hyuk Im, Youngjo Yang, O. Ok Park

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19 Citations (Scopus)

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 languageEnglish
Pages (from-to)6396-6401
Number of pages6
JournalJournal of Materials Chemistry A
Volume2
Issue number18
DOIs
Publication statusPublished - 2014 May 14
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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