@article{31646,
  author = {Xiaoqi Sun and Patrick Bonnick and Victor Duffort and Miao Liu and Ziqin Rong and Kristin A Persson and Gerbrand Ceder and Linda F Nazar},
  title = {A high capacity thiospinel cathode for Mg batteries},
  abstract = {<p><span>Magnesium batteries are energy storage systems that potentially offer high energy density owing to their ability to employ magnesium metal as a negative electrode. Their development, however, has been thwarted by a paucity of functional positive electrode materials after the seminal discovery of the Mo</span><small><span>6</span></small><span>S</span><small><span>8</span></small><span>\&nbsp;Chevrel phase over 15 years ago. Herein, we report the second such material {\textendash} a thiospinel {\textendash} and demonstrate fully reversible Mg</span><small><span>2+</span></small><span>electrochemical cycling\&nbsp;</span><em>vs.</em><span>\&nbsp;a Mg anode, which is complemented by diffraction and first principles calculations. The capacity approaches 80\% of the theoretical value at a practical rate (C/5) at 60 {\textdegree}C, and yields a specific energy of 230 Wh kg</span><small><span>-1</span></small><span>, twice that of the Chevrel benchmark. Our results emphasize the advantage in employing {\textquotedblleft}soft{\textquotedblright} anions to achieve practical divalent cation mobility.</span></p>},
  year = {2016},
  booktitle = {Energy \& Environmental Science},
  journal = {Energy \& Environmental Science},
  series = {Energy \& Environmental Science},
  volume = {9},
  pages = {2273 - 2277},
  month = {05/2016},
  issn = {1754-5692},
  doi = {10.1039/C6EE00724D},
  language = {eng},
}