Citation

Roberts GA, Cairns EJ, Reimer JA. Journal of the Electrochemical Society 2004; 151(4): A493-A496.

Copyright

(Copyright © 2004)

DOI

10.1149/1.1649753

PMID

unavailable

Abstract

The reaction mechanism for electrochemical lithium insertion into magnesium suicide was studies by in situ and ex situ X-ray diffraction (XRD). Lithium intercalation during the initial stages of insertion was indicated by a slight shift toward lower angles in the diffraction patterns. Upon further insertion, Li2MgSi was formed. This was indicated by the appearance of magnesium peaks, the disappearance of Mg2Si peaks, and the appearance of Li2MgSi peaks in the diffraction patterns. Magnesium XRD peaks that accumulated during cycling indicated that the formation of Mg2Si during lithium removal was not entirely reversible. Li2MgSi was synthesized by mechanical alloying. XRD patterns and nuclear magnetic resonance spectra of the mechanically alloyed and electrochemically produced phases are compared. © 2004 The Electrochemical Society.

Language: en

Keywords

Lithium; X ray diffraction; Mechanical alloying; Electrochemical electrodes; Electrochemically produced phases; Intercalation compounds; Lithium insertion; Lithium intercalation; Magnesium alloys; Magnesium peaks; Nuclear magnetic resonance spectroscopy