Lithium Insertion in SiAg Powders Produced by Mechanical Alloying

The mechanical alloying technique was applied to the Si-Ag system. SiAg powders formed by the mechanical alloying process appear to contain a uniform dispersion of Si in ductile Ag matrix. When the SiAg powders were tested as an anode material in a lithium cell, the cycling stability was significant...

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Bibliographic Details
Published in:Electrochemical and solid-state letters 2001-07, Vol.4 (7), p.A97-A100
Main Authors: Hwang, Sung-Min, Lee, Heon-Young, Jang, Serk-Won, Lee, Sung-Man, Lee, Seung-Joo, Baik, Hong-Koo, Lee, Jai-Young
Format: Article
Language:English
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Summary:The mechanical alloying technique was applied to the Si-Ag system. SiAg powders formed by the mechanical alloying process appear to contain a uniform dispersion of Si in ductile Ag matrix. When the SiAg powders were tested as an anode material in a lithium cell, the cycling stability was significantly improved by limiting the cutoff potential. The SiAg electrode prepared by milling for 50 h showed good cyclability with little fade over the first 50 cycles. It exhibited a stable capacity of approx =280 mAh/g or 1150 mAh/cm exp 3 , suggesting that the material system is promising as an anode material for lithium-ion batteries.
ISSN:1099-0062
DOI:10.1149/1.1375176