Magnesium Sulfur Battery with a New Magnesium Powder Anode

Herein we report a magnesium powder anode with medium capacity retention and recovery of potential plateaus over reversible cycling. Furthermore powder anodes showed an optimized behavior during charging leading to an improved coulomb efficiency compared to magnesium foil anodes. Battery cells with a powder anode showed pronounced voltage plateaus and no problem to reach a 2.8 V cut-off voltage. Within the compaction pressure range investigated a magnesium powder anode prepared by relatively low pressures showed advantageous properties and was further investigated by electrochemical impedance spectroscopy.