Studies on Complex Electrolytes for Divalent Batteries

Thursday, 1 June 2017: 17:12
Grand Salon C - Section 13 (Hilton New Orleans Riverside)
L. C. Merrill, S. Upadhyay, and J. L. Schaefer (University of Notre Dame)
Lithium-ion batteries have dominated the rechargeable battery market since the 1990s when they were first commercialized. Many advanced technologies (portable devices, electric vehicles) are limited by the performance of commercialized lithium-ion batteries. Furthermore, future resource availability is undetermined. Magnesium serves as a viable anode for post lithium-ion batteries due to its high volumetric charge capacity and widespread abundance. Magnesium batteries are under investigation for future applications in electric vehicles due to their potential to have high energy density and reduced cost. The electrolyte is identified as a limiting factor in magnesium batteries, as many analogous electrolytes to lithium-ion batteries can passivate the magnesium metal surface preventing rechargeability. Thus, many new electrolytes are under investigation in the field. Here we report the effect of the anion electronic structure and solvent on the performance of magnesium bis(disilazide) based electrolytes. This includes the electrolytes’ stability window, ability to electrochemically deposit magnesium, and conductivity.