what is a lithium battery

A lithium battery is a type of rechargeable battery that uses lithium ions to store energy. The term "lithium battery" refers to a family of different lithium-metal chemistries, comprising many types of cathodes and electrolytes but all with metallic lithium as the anode. Lithium is the metal with the lowest density and with the greatest electrochemical potential and energy-to-weight ratio, making it an ideal material for batteries. Lithium-ion batteries are the predominant commercial form of rechargeable battery, widely used in portable electronics and electrified vehicles. The negative electrode of a conventional lithium-ion cell is typically graphite, while the positive electrode is typically a metal oxide. Lithium-ion batteries have high energy density, low self-discharge, and no memory effect. They are repeatedly rechargeable with minimal memory effect, charge faster, and can hold the charge for a long time when not in use.