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Corresponding Author

Xin-ping AI(xpai@whu.edu.cn)

Abstract

A novel BaFeSi/C composite was prepared by mechanical ball milling, and lithium insertion reactions on the composite electrode were investigated by cyclic voltammetry ,charge-discharge measurements, XRD and XPS spectroscopy. It is demonstrated that the capacity retention with indiscernible capacity decas during charge-discharge cycling. The improved cycling ability of the composite is suggested from a cooperative action by inactive FeSi_(2 )and BaSi_2 matrix and outer graphite shell, which both buffer the volumetric changes of the active Si phase and provide a good connection for electronic and ionic conduction during lithium insertion and extraction processes.

Keywords

BaFeSi/C composite, Mechanical ball milling, Anode materials

Publication Date

2004-11-28

Online Available Date

2004-11-28

Revised Date

2004-11-28

Received Date

2004-11-28

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