Positive electrode active material for magnesium secondary battery, magnesium secondary battery, method for producing positive electrode active material for magnesium secondary battery, and method for producing magnesium secondary battery

摘要

An object of the present invention is to provide a magnesium secondary battery that can be charged and discharged as a magnesium secondary battery and can improve the characteristics of the magnesium secondary battery. The positive electrode active material for a magnesium secondary battery of the present invention is represented by the composition formula MgMSiO4, and the M includes at least one selected from Co, Ni, and Fe.