Lithium is a metal element with a chemical symbol of Li (English name is lithium). It is a silver-white, very soft, chemically active metal that is the lightest in metals. In addition to its application in the atomic energy industry, it can manufacture special alloys, special glass (fluorescent screen glass for TV sets) and lithium batteries. It is used as an anode of a battery in a lithium battery.
The lithium battery has the advantages of stable discharge voltage, wide operating temperature range, low self-discharge rate, long storage life, no memory effect and no pollution.
Lithium batteries are also divided into two categories: non-rechargeable and rechargeable. A non-rechargeable battery is called a disposable battery. It can only convert chemical energy into electrical energy at one time, and cannot restore electrical energy back to chemical energy (or very poor recovery performance). A rechargeable battery is called a secondary battery (also called a battery). It converts electrical energy into chemical energy and, when used, converts chemical energy into electrical energy. It is reversible, such as the main feature of lithium-ion batteries for electrical energy.
Smart portable electronic products require a small size and light weight, but the size and weight of the battery are often the largest and heaviest compared to other electronic components. For example, the "big brother" of the year is quite "big and heavy", and today's mobile phones are so light. Among them, the improvement of the battery plays an important role: in the past it was a nickel-cadmium battery, and now it is a lithium-ion battery.