In-situ growth amorphous carbon nanotube on silicon particles as lithium-ion battery anode materials

Tingkai Zhao, Shengfei She, Xianglin Ji, Wenbo Jin, Alei Dang, Hao Li, Tiehu Li, Songmin Shang, Zhongfu Zhou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

35 Citations (Scopus)

Abstract

A novel silicon core/amorphous carbon nanotube (ACNT) shell composite that can be used as lithium-ion batteries anode material was in-situ synthesized in the chemical vapor deposition (CVD) growth process. The hypothesized core/shell structure was evidenced by SEM/TEM/XRD, suggesting that the ACNTs composed of carbon clusters with short-range order and long-range disorder were successfully deposited onto the surface of the silicon particles. This Si/ACNT composite delivered a high capacity of 1496 mAh g−1at a current density of 100 mA g−1, and a superior cycling stability with 80% capacity retention after 300 cycles. This observed specific capacity improvement of Si/ACNT composite is likely attributed to the formed three-dimensional conductive networks between silicon particles and interwoven ACNTs in the composite.
Original languageEnglish
Pages (from-to)500-507
Number of pages8
JournalJournal of Alloys and Compounds
Volume708
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Amorphous carbon nanotubes
  • Chemical vapor deposition
  • Electrochemical properties
  • Electron microscopy
  • Silicon core-shell composite
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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