Novel silicon nanowire film on copper foil as high performance anode for lithium-ion batteries

Xin Wang, Lanyan Huang, Yongguang Zhang, Fuxing Yin, Zhumabay Bakenov, Nurzhan Umirov, Mingliang Jin, Guofu Zhou

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A novel silicon nanowire film anode was successfully prepared by a combination of magnetron sputtering deposition and metal-catalyzed electroless etching technology. Scanning electron microscopy revealed the formation of a Si film composed of nanowires with a diameter of ~70 nm and lengths of ~3.5 μm. As-prepared Si nanowire film is directly grown on current collectors without binders and carbon additives, which provides a good contact and adhesion of them to current collector. Furthermore, the defined spacing of nanoscale Si nanowire allows Si to undergo large volume change during the alloying/dealloying process without loss of its integrity. These structural features of the resulting Si nanowire make it a promising anode for lithium-ion batteries with remarkably improved electrochemical performance compared with the Si film-based electrode prepared without metal-catalyzed electroless etching process.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalIonics
DOIs
Publication statusAccepted/In press - Jul 16 2017
Externally publishedYes

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Keywords

  • Anode
  • Lithium-ion battery
  • Magnetron sputtering deposition
  • Metal-catalyzed electroless etching
  • Si nanowire film

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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