@article{27828,
  keywords = {x-ray diffraction, electrochemical electrodes, intercalation compounds, lithium alloys, magnesium alloys, mechanical alloying, tin alloys},
  author = {Gregory A Roberts and Elton J Cairns and Jeffrey A Reimer},
  title = {An Electrochemical and XRD Study of Lithium Insertion into Mechanically Alloyed Magnesium Stannide},
  abstract = {<p>The intermetallic Mg<sub>2</sub>Sn is a promising negative electrode material for rechargeable lithium cells. Preliminary cycling tests have demonstrated stable capacities at 400 mAh/g for 20 cycles. Magnesium stannide was produced by mechanically alloying magnesium and tin powders. Mechanical alloying can convert the equilibrium Mg<sub>2</sub>Sn phase to a metastable phase by the introduction of defects with extended milling times. <em>In situ</em> X-ray diffraction has shown that the cubic Li<sub>2</sub>MgSn phase, which is similar in size and structure to cubic Mg<sub>2</sub>Sn, is produced by lithium insertion into the equilibrium and metastable phases. The conversion from the metastable phase is irreversible, so subsequent lithium removal from Li<sub>2</sub>MgSn produces the equilibrium Mg<sub>2</sub>Sn phase.</p>},
  year = {2003},
  journal = {Journal of The Electrochemical Society},
  volume = {150},
  pages = {A912-A916},
  issn = {00134651},
  doi = {10.1149/1.1578477},
}