Challenges of a Rechargeable Magnesium Battery

Abstract

A rechargeable magnesium battery is a post-lithium-ion battery which promises the safe use of a high-energy magnesium metal anode. While electrolytes aimed at magnesium electroplating have been reported for 100 years, a great challenge has been the development of noncorrosive, high-voltage electrolyteshigh-voltage electrolyteswhich are compatible with magnesium metal and are aimed for battery use. The last 30 years have resulted in rapid progress of electrolytes for battery applications. Such modern electrolytes are compatible with magnesium metal and possess high conductivities (>10 mS/cm), high voltage stabilities (>4 V vs. Mg/Mg2+), and a noncorrosive character and can be used to develop high-energy cathodes for a rechargeable magnesium battery. The current challenge of the magnesium electrolyte field is the development of simple, transferable synthetic routes which can be reproduced by nonspecialists.