SELECTION OF A CONSTRUCTION MATERIAL FOR A BATTERY BASED ON THE LI-SO2 SYSTEM

To select the most corrosion resistant construction material for a sec ondary Li-SO2 battery in a perchlorate electrolyte based on sulfolane and acetonitrile, the electrochemical activity was studied of several metals in an SO2-containing electrolyte. It was found that metals tent atively related to the ''nickel group'' (nickel, titanium, KP-08 steel , tantalum) dissolve in the charging cycle of these batteries. Metals of the ''aluminum'' group (aluminum SAV alloy, stainless steel) are pa ssivated in the charging cycle of the batteries during anodic polariza tion. Aluminum and its alloys are recommended as cathodic current cont rollers for an Li-SO, accumulator [storage cell] in an electrolyte bas ed on sulfolane, aceto-nitrile (1:1), LiClO4, and SO2.