@article{27823,
  keywords = {x-ray diffraction, nuclear magnetic resonance, intercalation compounds, lithium alloys, magnesium alloys, mechanical alloying, silicon alloys},
  author = {Gregory A Roberts and Elton J Cairns and Jeffrey A Reimer},
  title = {Mechanism of Lithium Insertion into Magnesium Silicide},
  abstract = {<p>The reaction mechanism for electrochemical lithium insertion into magnesium silicide was studies by <em>in situ</em> and <em>ex situ</em> 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, Li<sub>2</sub>MgSi was formed. This was indicated by the appearance of magnesium peaks, the disappearance of Mg<sub>2</sub>Si peaks, and the appearance of Li<sub>2</sub>MgSi peaks in the diffraction patterns. Magnesium XRD peaks that accumulated during cycling indicated that the formation of Mg<sub>2</sub>Si during lithium removal was not entirely reversible. Li<sub>2</sub>MgSi was synthesized by mechanical alloying. XRD patterns and nuclear magnetic resonance spectra of the mechanically alloyed and electrochemically produced phases are compared.</p>},
  year = {2004},
  journal = {Journal of The Electrochemical Society},
  volume = {151},
  pages = {A493-A496},
  issn = {00134651},
  doi = {10.1149/1.1649753 },
}