The element magnesium is about 3,000 times more abundant on earth than lithium. Mg has a wide range of applications in industry and is also an important element in pharmaceuticals. Industrially, it is often used as an alloy with aluminum for lightweight construction applications and in metal production. Scientists* worldwide are researching magnesium batteries as a sustainable alternative to current lithium-ion batteries. Prof. Maximilian Fichtner explains what makes magnesium so interesting as a battery material and what is still missing for market maturity.