A lithium anode is the negative electrode in a battery, typically made of pure lithium metal. During battery discharge, lithium ions move from the anode through the electrolyte to the cathode, releasing electrical energy. Lithium anodes are prized for their high energy density and are commonly used in advanced batteries, such as lithium-ion and lithium-metal batteries. However, they can pose safety risks, such as dendrite formation, which may lead to short circuits or fires. Ongoing research aims to improve the safety and longevity of lithium anodes for widespread use in portable electronics, electric vehicles, and grid storage.