Electrochemical behavior of a silicon particle anode cell synthesized by an induction furnace

Dong Kyu Yun, Woo Young Yoon

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Nano-size Si powder was fabricated via an induction furnace and pulverization from Si-Al alloy. Though the primary Si particles were collected and etched by sulfuric acid, a small amount of Al remained in the powders. The existence of this Al was identified by XRD and EDX. A battery cell, which was synthesized with a Si powder electrode and Li foil as a counter electrode, exhibited improved cyclability and less impedance in comparison to those of a typical pure Si powder electrode cell. This resulted from the role of the Al remaining in the Si powder, which served as a conductive agent. The new method allows for a large amount of micro- or nano-size Si powder with the metal component to be synthesized very easily and inexpensively for Li rechargeable cells.

Original languageEnglish
Pages (from-to)221-224
Number of pages4
JournalElectronic Materials Letters
Volume7
Issue number3
DOIs
Publication statusPublished - 2011 Sep 1

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Keywords

  • Si-Al alloy
  • anode
  • induction furnace
  • nano-Si particle
  • rechargeable cell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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