Research progress of voltage delay in magnesium battery

Research on magnesium battery has three primary fields as follows: changing the metallurgical factors of the magnesium electrode material to improve discharge performance, identifying inhibitors to form a protective film to reduce self-corrosion of magnesium alloys, and improving the electrochemical properties of the electrolyte to improve discharge continuity. During the research and development of the magnesium battery, the voltage delay that occurs in the discharge process is a critical issue because it limits the application of Mg/MnO2 cells. This paper provides an overview of the relationship between the voltage delay of magnesium primary battery and magnesium anode corrosion. Furthermore, the factors affecting the voltage delay were analyzed, and the existing problems in the study of the voltage delay of magnesium battery were identified.