| abstract |
The present invention demonstrates Br 2 -based conversion chemistry is a potential route toward rechargeable Mg-batteries. Compared with Mg-ion or Mg-air chemistries, the Mg—Br 2 system features fast kinetics and good cyclability. In one embodiment, the present invention provides a rechargeable non-aqueous, dual-electrolyte scheme. In one embodiment, the anolyte consisted of Mg(TFSI) 2 dissolved in a monoglyme and diglyme mixture, whereas the catholyte was composed of Mg(TFSI) 2 in PYR 14 TFSI ionic liquid mixed with active bromine species. When Mg was used as the anode, an open circuit voltage of 3.0 V (vs. Mg 2+ /Mg) was measured. |