Lithium ion power batteries are a new type of high-energy battery developed successfully in the 20th century. The negative electrode of this type of battery is made of materials such as graphite, while the positive electrode is made of lithium iron phosphate, lithium cobalt oxide, lithium titanate, etc. In the 1970s, it entered practicality. Due to its advantages such as high energy, high battery voltage, wide operating temperature range, and long storage life, it has been widely used in military and civilian small electrical appliances. Lithium ion power batteries have partially replaced traditional batteries in mobile phones, portable computers, cameras, and more. Large capacity lithium-ion batteries have been tested in electric vehicles and will become one of the main power sources for electric vehicles in the 21st century. They have been applied in artificial satellites, aerospace, and energy storage. Power batteries with positive electrode materials such as lithium manganese oxide and lithium iron phosphate are collectively classified as lithium-ion power batteries, each with its own advantages, and are the development trend of the new generation of lithium-ion power batteries
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